Science topic

Agricultural Engineering - Science topic

Design, management of Agricutural systems from the plant to the Landscape
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Agricultural Engineering journals above 6 NAAS rating
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Very genuine question
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The Misr (Egyptian) Journal of Agricultural Engineering (MJAE) missions are to be a distinguished and specialized scientific journal in the field of scientific research and provide applied research in both Arabic and English languages and contribute to the development of the agricultural engineering sector, community service and the environment in order to achieve sustainable development goals at the local, regional and international levels.
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Guide to indexing in Scopus.
Pdf attached
Regards
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I am planning a survey on status of Agricultural Mechanization in province no. 1 of Nepal. To make it more realistic, i am hopping suggestions.
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Holding sizes, available resources, existing crops and their geometry, input requirements of the crop etc. are important key points.
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Clod crusher is important for making fine seedbed. Proper BIS guidelines will helpful for testing it in the field. 
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Soil clod refers to a natural lump of soil that exists as an isolated entity in the field. Clod formation is a serious problem to prepare the seed bed. Tillage of a compacted soil results in greater cloudiness than of an incompact soil. Clods create obstruction to penetration of furrow openers of seed drill and do not allow intimate contact between seeds and soil. Pulverization of clods is necessary to avoid the problems Loosening of soil is done to achieve a desired granular soil structure for a seedbed and to allow rapid infiltration and good retention of moisture, to provide adequate air exchange capacity within the soil and to minimize resistance to root penetration and shoot growth. Clod breaking operation is required to produce a granular soil structure in the final seedbed.
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I am trying to design an agricultural and horticultural calendar for Karbi Anglong and Dima Hasao districts of Assam, India. What are the steps that I should begin with?
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The One Health approach is gaining more and more importance in the concert of integrated studies on human, animal and plant health, of microorganisms, as well as in studies of soil health and ecosystems in general, at a time of frank deterioration of biological diversity.
The One Health approach is paramount in the observance of the safety of productions intended for both human and animal consumption.
What theoretical and practical elements do you consider that should not be neglected when planning a study of the relationships that make up the One Health approach in a community of agricultural producers?
The purpose is to ensure that the producers end up empowering themselves with a careful productive attitude in the terms that are raised with the One Health approach.
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Good question.
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what are the most needed devices or measuring device needed in a renewable energy lab. for education and research in
solar energy
biogas
wind energy
others
related to agriculture and agricultural engineering
-----
thanks in advance
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Ashrf Abdel Galil Anwer the experts above have already cited and for solar equipment, one can easily understand the requirements for the laboratory related to solar products and these are available online as well meanwhile there are laboratories in every city for this requirement
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in chapter 10 of "introduction to Agricultural Engineering Technology a problem solving approach" 3rd edition book, I've met this problem however it's calculated with a wrong parameters and calculation within the book itself, but I've tried to solve it with the right parameters according to what's mentioned in the book but with a non-realistic answer?!
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I would be grateful if you could help me find out one or few case studies in the Pacific region where soil erosion in pineapple fields is efficiently managed.  As part of a regional project (www.spc.int/resccue) dedicated to integrated coastal zone management  in the Pacific region, I would like to identify few case studies where soil erosion in pineapple fields is correctly managed in order to organize a technical exchange between pineapple producers in French Polynesia and producers in other places of the Pacific region.
Many thanks for your answer.
Do not hesitate to contact me if you need further information.
Best,
Mr CHARLES mahe / RESCCUE project coordinator in French Polynesia
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This is a good question.
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Here I given 2 fromula for soil erodibility K factor.
Which formula is in metric units?
K = 2.1 x 10-6 x M1.14 (12-a) + 0.0325 (b-2) + 0.025 (c-3)
K = 2.8 x 10-6 x M1.14 (12-a) + 0.043 (b-2) + 0.033 (c-3)
Kindly guide me.
Thanking you
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This is a good question.
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In Serra Gaúcha of Rio Grande do Sul, Brasil, our researches have been stated several deficiences in wind flow determination, to setting up a airblast sprayer.
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We are using turbulent air jets which need low air flow whil are rotating the leaves and cover all of them on both sides agmanor@ airgreen.co.il
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We have a residue management project running here in our station, inside this project we want to measure draft power variation due to different factors. In this case, we need to measure the power used during using the machines. I am expecting from experts around the globe working in related fields to share with me devises available to measure such a moving loads. I have heard something about moving load cells but am not clear about this as well.
Thank you!!
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You do not have to measure them, you can look at the standarts of the ASABE all is there. But I already have a way of lowering the draft power by more then 50%, by rotating the tilage equipmets. I am looking for some one to cooperate in buiding them.
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Is technological progress in agriculture based on the application of scientific discoveries in the field of biotechnology, genetics, automation and robotics of field works, implementation of biodiversity principles and the creation of resistant to fungal, viral, bacterial and other cultivar diseases, etc. with the elimination of the use of chemical plant protection products will enable in the 21st century the development of sustainable environment-friendly agriculture, ie the kind of agriculture thanks to which healthy vegetables, fruits, grains free from pesticides and other chemical plant protection products and organic farming, ie non-polluting, are produced?
Please reply
Best wishes
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I think that technological progress in agriculture will enable the development of sustainable environment-friendly agriculture.
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I took XRD of dried mango slices and want to calculate the crystallinity index according to the formula X_c=((Icrystalline - Iamorphous)/Icrystalline) ×100 Icrystalline will be the highest peak intensity around 18o but how to find for the amorphous region.
but how to find degree for the amorphous region?
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Crystallinity index is the ratio of the crystalline peaks to the crystalline+amorphous peaks. Amorphous peaks are the noise in XRD data, while, from crystalline+amorphous, we mean the whole XRD profile. In the following 17 min video, I have explained in detail the crystallinity index and how to calculate it from XRD data. In the first 2.5 min, I have first explained 'what is meant by the crystallinity index'. In the rest of the video, I have taught 'how to calculate the crystallinity index from XRD data in origin for crystalline as well as amorphous materials. If you need anything further to ask, let me know. I'll appreciate your feedback on the video tutorial. I have attached the discussed files (Origin file and Excel template) here, as well as, they can be accessed from the description in the video. Thanks
How to calculate crystallinity index from XRD data using origin
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About urea foliar application is told that agricultural breeded plants can use the nitrogen ad hoc and efficiently. But urea is ambivaltent : it is causing also leaf burning by not proper application in small ranged climatic environment conditions.
Has or knows anyone evidence based trial literature or handbooks about the benefits and the disavantages and of precise and damage avoding urea application in leaf fertilization?
I am also interested on positive reported results for soilless, tropical and green house conditons, besides crops as maize, potatoes, sugar beets, cereals, forage grasses and canola.
Best thanks in advance Johann HUMER, Austria
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Urea containing 46% N is usually applied to wheat crop especially under rainfed conditions at 1-2% urea concentration at tillering and heading stages.Some workers tried upto 4-5% urea concentrations to supply more N to crop.But one should be cautious with application of high urea concentrations with possible leaf injury/burning. To make 2 percent urea solution you have to mix 20 g urea in one litre water (2 g urea/100 ml). Foliar solutions are usually mixed with a surfactant like tween-80 at a concentration of 0.1 % v/v for improving leaf wetting and preventing droplets from immediate drying thereby prolonging the period of N absorption.0.1 percent means 1 ml per litre(v/v).
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When i start doing literature i observed that most of the authors used pre-trained CNN models for the identification and classification of plant leaf diseases. Why none of the authors concentrated to designed customised CNN model for this problem? is there any particular reason?
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To make a robust CNN model it requires a large number of pre-labeled data sets. Which is quite difficult while tackling a practical problem. Moreover, the training of a model is a time-consuming process and requires a large storage space, which is quite costly in general.
You are right that a pre-trained model is highly customized with its parameters and size but the impact is low when you trained over a large number of data sets.
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anyone can recommend articles or information about the functions and design parameters of a combine carrot ?
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I think this link will help you
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In India there is a high demand of cotton picker which can save time and labour for cotton growers.
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Maybe the cotton variety is inadequate with a cotton picker machine.
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(For more or less practical needs)
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ASABE Standards are a good indicator for determining the best matching method of tractor - implement.
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its my new project developing quad in uses  of agriculture
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Yes it can be use for various application
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Highly advanced biotechnology labs cannot find the treatment for coronavirus, which almost at the verge of pandemic.
It's killing people smoothly in developed countries.
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Because COVID-19 is not caused by genetic defects of human being. The big problem with severe case of the COVID-19 is not the weakness of our body, but the overreaction of the our immunity, the so-called cytokine storm. Cytokine storm reflects a strong yet damaged immunity which is not properly controlled by the body. If a person is healthy without any underlying health problems, his immunity will be robust enough to resolve the virus infection, and the COVID-19 case will mostly be mild. So recovering a person's fitness and health by lifestyle change is more important than just improving/boosting immunity.
The same goes with some metabolic syndromes like morbid obesity, cardiovascular diseases and type 2 diabetes. They are not genetic diseases and are caused solely by lifestyle. Genetic engineering will never find treatment for these metabolic syndromes. They can only be corrected by lifestyle change.
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I have known some physical-based models and emperical models, i.e., the original Stefan model (mainly used in permafrost regions) and its modified modes. However, I consider there would be some better methods to quantify the dynamics of frost depth in seasonal frozen soil region.
Due to the characteristics of two-way melting of the soil during the thawing period in seasonal frozen soil regions, the prediction of the frost depth during the thawing period becomes more complicated and difficult. Are there any good methods to quantify the dynamics of frost depth during thawing period?
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Thank you for sharing your latest related research, I will read it carefully!@Yijian Zeng
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The fruit has a hard stone and soft flesh.
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check this article may be help you
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A project I am working on is the evaluation of stigma temperature in outdoor conditions (solar radiation up to 800-900 W/m2 and air temperature varying between 10-30 degrees).
I am utilizing three different instruments,
1. Thermal Camera that can be attached to a cell phone (thermal expert Q1)
2. Type T thermocouples 32 AWG (0.008 inches in diameter or 0.3255 mm2)
3. IR thermometer
The instruments were calibrated with a certified digital thermometer.
When all three methods are pooled together, we notice that IR camera and thermocouples have near consistent results while the IR thermometer is nearly systematically cooler than the two other methods (of about 1.5 degrees Celsius). This is odd and difficult to explain. Also, these values for the IR thermometer always make stigma cooler than air, which would not make much physical sense as the stigmas don't have any cooling mechanisms to our knowledge. Consequently, I am wondering if anybody has had any experience with any of these three instruments in order to help me get a better understanding of what could be the issue, but most importantly which instrument is actually the best to measure temperature.
Thank you for your time,
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Rafael Villalobos Thank you for these links, they are very informative and I will use them to further my understanding of what is going on. I just find it peculiar that both IR measurement instruments often give completely different results (with the IR thermometer often giving lower temperatures than the IR camera). Both of these instruments suffer the same sources of physical errors (emissivity, reflectance, background emissions), hence there must be something I am missing in my understanding.
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I have to present advanced materials used in agriculture. Thank you
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For the diffusion of insect pheromone it is possible to use devices made out of biodegradable plastic (made out of mays starch). Rama et al: The control of Cydia molesta in stone and…. IOBC wprs Bulletin 25 (9) 121-128, 2002.
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did anyone know The disadvantages of robotic lawn mower ?except Noise generated by the lawn mower blade
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What is your opinion about genetically modified crops?
Do you accept the creation of new varieties of crops by modifying the genome to produce varieties of crops that are more resistant to viral, bacterial, fungal, parasitic, etc. diseases?
Please reply
Best wishes
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David Fisher, I think your arguments are themselves misleading. You are equating a technology with an application. GMO does not require that we move genes between kingdoms, it could be as simple as taking a gene from one wheat species and moving it into another, or perhaps just removing a gene from an organism. The technology has lots of potential uses and when you promote the abolition of that technology then you prevent all those applications. The concerns you are putting forth are with regard to the applications. Yes it is true that there are problems with large agribusiness as it presently functions, but it seems more appropriate to regulate the business application than the technology. If you wanted to suggest that food crops should not carry genes that originate from a different kingdom, or phyla or whatever, that is quite different than banishing all GMO. And I strongly disagree that our understanding of genomes or DNA is superficial. Do we know everything, of course not. But superficial is vastly overstating the situation.
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i hold BSC degree in Agricultural Engineering and Msc in water resource engineering.My research intrest is in irrigation efficiency and performance indicators
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Dear Fareed,
It is always recommended to discuss with potential advisor to select a title. However, first, I would suggest to do some literature review to list the critical research questions on irrigation engineering. I can list a couple of potential research titles on Irrigation Engineering, but it will not help you much. Since you have decided to pursue PhD degree, please start from literature review and generate your unique ideas on select area. Hope it helps.
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Hello Research Gate Community!
I am a first year Entrepreneurship Ph.D. student at Baylor and I am conducting a study on academic scientist’s intention to commercialize their research.
While a lot has been done on the topic of commercializing research, almost no one has examined it from the perspective of the scientist. Your perceptions of research commercialization matter and should be considered by university policy makers when designing the process.
I don’t think anyone likes long surveys and I know you have much more important things to do, so I designed the survey to take less than 10 minutes. If you are willing to take the survey, you can access it through the link below:
Thank you very much for the time and consideration!
Best,
Austin
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P.K. Karmakar Thank you for the encouragement! Before offering my opinion I will offer a disclaimer-- the deepest understanding I have of theoretical physics research comes from a recent reading of Neil deGrasse Tyson's "Accessory to War" (while not a technical read, I highly recommend it). The book offers an interesting insight: while theoretical physicists tend to be opposed to war, their research outcomes are often first utilized by military before reaching civilian markets. To speculate on Tyson's offering: I think generally, direct commercialization is challenging. While outcomes of theoretical physics research have a multitude of application (in warfare and civilian markets), I imagine large scale development is initially very costly (due to being highly technical in nature). Military budgets, being extensive and widely unchecked, allow for far more spending on prototyping/developing these technologies than what civilian industry can achieve. I suspect many outcomes of theoretical physics research undergo initial development in a military setting, later transitioning to civilian markets after this process has reduced development costs for businesses. That said, I am sure there are exceptions-- I am just unfamiliar with them. I hope my answer is helpful. If you know of any cases of outcomes going from lab to civilian markets, please do not hesitate to share. I would love to learn more about direct commercialization of theoretical physics research! Thanks again for your comments.
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There are many aspects to consider when managing agricultural landscapes: biophysical processes, human intervention and socio-economic processes. How do all these processes play together and how can this be modelled? What are the main feedbacks to consider from your own research or application perspective?
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The question starts with 'modelling', the explanation introduces 'managing' and one of the answer raises 'design'. Starting the later, few farming landscapes have been designed. Examples of designed farm landscapes are polders (e.g. NL, DE, IT), irrigated lands downstream of reservoirs (e.g. Mariental, Namibia), land consolidation projects (landscape redesign) and post-revolutionary land reform (e.g. kolchoz) . The next level, managing seems largely fictitious for private land.
As a working hypothesis, designed agrarian landscapes show (i) more separation of planted tree, crop and grass, (ii) larger blocks of each component and (iii) little land reserved for spontaneous vegetation and wildlife developments. The latter needs more systematic attention from my perspective as practitioner.
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I need data on global oil production, import and export for these oils: hazelnut, pistachio, avocado, almond and walnut./ Many thanks
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Interesting question.
Following
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Hi everyone
I have an article that will be published soon. In this paper, precipitation is predicted by MPI-ESM-MR model in Tabriz (The largest city in northwestern Iran). The results showed that, according to the both RCP4.5 and RCP8.5 scenarios, the winter precipitation will be increase over the three future periods (2021-2040, 2041-2060 and 2061-2080). Even in the RCP4.5 scenario, the trend will be ascending. While Tabriz's winter precipitation trend is descending in the base period until 2015! It seems to be a contradiction. This means that over the next three years, the winter precipitation will suddenly rise! Is this possible?? What's your opinion?
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Models of any kind are either research/simulation models or predictive/forecast models or hybrid. GCM's have only a small amount of predictive value, depending in part on what variables they are used to forecast and for how long into the future. On the other hand, I think we need to learn to use the valuable information they give us about plausibility of future scenarios. Single predictive runs, and especially ensemble predictive runs, can tell us that a period of increased precipitation in one region may be very plausible, or very implausible, or somewhere in between. Such "predictions" are more reliable than a literal reading of one forecast for a single variable, a single year, and a single site, which should almost never be taken literally.
As a society, we need to have contingency plans for all plausible futures. This may sound undesirable difficult, but it is reality. We plan baby clothing before we know the gender of a child; we plan how to spend a salary even before we are offered the job; we invest in international moves before we have a visa. So the wise citizens of Tabriz are well advised to keep both their umbrellas and their cricket sets. I'd be nervous to give up either one in our changeable climate system.
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we know that for CO2 concentration, AquaCrop model uses SRES scenarios but how we can use RCPs in AquaCrop? Can we assume A2 as same as RCP8.5 for this purpose?
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Thank you all...At that time AquaCrop was not updated for RCPs but now new scenarios (RCPs) are considered in the software. Anyway Thank you all for your kindness and respond.
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We are looking for a means of preserving the bioactivity of a functional rice product. The use of superheated steam drying has been recommended by many experts for this purpose. We wish to find out if this technique can be used to increase processing efficiency be reducing total processing time and energy requirements.
Please share your experience with us.
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I need a reference for using the two methods in one project.
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The following article may be useful for you:
"Impacts of climate change on runoffs in East Azerbaijan, Iran" Zarghami et al. 2011.
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spading machine works on articulated quadrilateral mechanism.
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I am looking for a plant leaf sample grinder. This should be a simple one with more convenient to operate and clean.
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Good quality grinder mixer is very effective in this regard ....
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I have submitted a manuscript to a reputed journal. After 2 months of peer review process, the response was “moderate revision has been requested” and they told me that the new version is required within 1 month.
After making the necessary adjustments, I have resubmitted the revised manuscript back on the 14th of October 2017. On the 21st of October the status changed from “with editor” to “under review”. To date (16th December) the status is “under review”.
In fact, I had made some readings about late reviews, I found that reviews are normally due 14 days after the invitation is accepted by the reviewer.
Should I worry about manuscript rejection?
Thanks in advance for your help
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I feel that there is no fear about rejection if you have complied with all the issues raised by the reviewer or have provided satisfactory explanation to contradict the comments.
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we are also using a 100 mm calibrated cylinder.
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As Michel indicated in his answer, there are many aspects to be considered. You have clarified that you are wanting to use an artificial rainfall simulator to measure both the rain rate and the rain accumulation. This narrows some of the considerations. First off, you should know before hand what size rainfall event you plan to simulate. That value should be determined with some knowledge of rainfall intensities normal for the area. Do you want to simulate a 1-h, 10-year return interval or some other intensity that is reasonable for your area. Secondly, the artificial rainfall simulator should be equipped with a nozzle with a known maximum flow rate. Actual flow rate should be somewhat adjustable based on water pressure (flow) to the nozzle. Rainfall intensity will likely be controlled through a solenoid device and electrical flow controller. Careful calibration off-site must be undertaken prior to actual test run until the desired rainfall rate can be achieved, but measurement will still be necessary throughout the run. We have calibrated using about 20-30 small collection vessels scattered throughout the area covered by the simulator spray pattern. We have used three (4") manual rain cans to measure rain accumulation throughout the run. Your question of "How much time the rain gauge should be exposed to the rainfall" might be simply answered as: as long as you have the rainfall simulator spraying rain onto the slope. You might want to refer to our publication where we give details of our rainfall simulation methods as well as runoff and soil moisture measurements and results of sediment transport.
Pyric-herbivory and Hydrological Responses in Tallgrass Prairie
West, Amanda L; Zou, Chris B; Stebler, Elaine; Fuhlendorf, Samuel D; Allred, Brady. Rangeland Ecology and Management; Vol. 69, Iss. 1,  (Jan 2016): 20-27.
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Dear Colleagues, 
What kind of Biofertilzer are used until now with a great success?!
Thank you
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Thank you all of you
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i am working on modeling rainfall-runoff and initial soil moisture is an important data , is there any formula to calculate the initial soil moisture ?  using for example the API or simple inputs ?
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how to measure initial moisture content of plants?
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We are currently building an aeroponic system for cultivation of various vegetables.
However, we seem to be stuck at the choice of an appropriate type of spray nozzle head. Ideally, the droplet size would be about 50 µm and it should be sprayed in an angle as wide as possible.
I've tried several companies specialized in distribution of these nozzle heads, but none of them seem to have an appropriate one.
Am I being to strict?
Does anybody have a suggestion? Or better yet, could you share which nozzle heads you use?
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Thank you!
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It is an stream bed erosion, due to erosive action of water flow sand present in the bottom of  stream gets eroded. for this condition suggest ways to improve the erosion resistance of sandy soil.
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River bank erosion is one of the major and unpredictable hazards worldwide including in Malaysia. Soil detachment at river banks is due to two processes: 1) hydraulic erosion imposed by channel flow and 2) sub aerial erosion due to the weakening and weathering of bank materials. This paper is focused on the second aspect of the erosion process which mainly depends on the combination of rainfall intensity and the ability of the soil to withstand the raindrop effects. The relative combination of sand, silt and clay in a soil is argued to have an impact on erosion resistance. In cohesive soil composition, sand forms the largest size ranging from 0.05 to 2 mm whereas silt is adequately moderate (ranging from 0.002 to 0.05 mm) and clay is the smallest of all three (less than 0.002 mm). With the knowledge that soil composition does indeed have an effect on erosion resistance, this paper will attempt to relate risk assessment index of river bank erosion specifically to soil composition. Thus, the objectives of this document are as follows; 1) to produce risk assessment index for river bank erosion and 2) to carry out a case study for selected rivers in Malaysia pertaining to river bank assessment. The index is produced by inferring the previously developed scale on soil erodibility. Past researchers created the “ROM” scale (named after the researchers, Rolan and Mazidah) to assess degree of soil erodibility into five classes namely “critical”, “very high”, “high”, “medium” and “low”. Instead of using semi empirical formula from the “ROM” scale, a percentage of soil composition was inferred to produce risk assessment index. It was found that as the percentage of clay decreased, susceptibility index became higher and approached a critical level. Application of the newly developed index is verified by conducting a case study at the Langat River, Kajang, Malaysia. The soil composition was classified and form fitted into the index. It was found that the middle reach of the Langat river is susceptible to severe erosion due to low percentage of clay. This finding agreed well with the visual observation of these reaches as a large portion of gully type of erosion had been observed throughout the study. The establishment of risk assessment index which firmly indicates the relationship between soil composition and river bank erosion can be used as a tool in forecasting the risk levels. This formulation is well proven to assess river bank conditions and the associated critical shear stress is very much close with the previously published shear stress.
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How much the efficiency of used Agriculture by products act as biofilter
 such as rice husk and maize stubbles?
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Best solution has given by Dr. S.K. Malhotra
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Latest data on annual seaweed production 
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There is always a 2 years lag in statistics so that they are accumulated (and validated) at the national level and then the international level. The most updated data are for 2014 with the FAO/SOPHIA.
All the best,
Thierry Chopin
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I have past agricultural dataset containing soil fertility, crop planted, and fertilizer applied and yield obtained. I am trying to recommend to a farmer appropriate crop and fertilizer to be used for high yield production based on his soil fertility which is also to be predicted from soil dataset. Is it possible to use apriori algorithm and if possible can someone help me with some tips on how to go about it.
thanks
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For recommending farmers the fertilizer use for some crops,we need already existing soil test crop response correlation and calibration information in a particular area.Otherwise, one has to establish new soil test crop response correlation and calibration information system.For different plant nutrients we need to identify suitable extractants to estimate plant- avaialbe soil nutrients.We also need crop response data for individual nutrients for a particular crop.Then one has to correlate the soil tests with crop response.After that soil test is calibrated with crop response to added nutrients to predict crop response to added nutrient.Then one has to interpret the soil test crop response information to give suitable recommendations to farmers. The following papers may be consulted for more information.
Developing a soil test extractant: The correlation and calibration processes by Hochmuth,G.,Mylavarapu,R and Hanlon Ed . UF IFAS Extension
Soil testing for P and K has value in nutrient management for annual crops Geisseler,D. and Miyao,G. 152 California Agriculture 70,(3)152-159
http://calag.ucanr.edu . July-September2016
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I want to get detailed information on the pineapple's climate, thermal, and water needs
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 Dear Dr. Daniel,
Page number 52 from the following web link may be of some help to you. (Threshold critical temperature for Pine apple is 35 degree celsius).
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I would like to know scope of research in leaching pesticide due to heavy rainfall or spilling of pesticides on the surface. Is there any scope for mathematical modelling of leaching as in chemical engineering point of view?
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I think there is considerable research in this area. Essentially you want degradation rates, adsorption/adsorption, hydrophilic/hydrophobic, and soil properties to movement of the pesticide. This will be an extensive literature review (possibly a good sized book if you include all pesticides). You will need a university library to gain access to the older literature.
Typing in "pesticide leaching model" as a google search yields 957,000 hits. The top two hits reference PEARL, GeoPEARL, and KTURF models for soil leaching of pesticides. The existence of such models suggests considerable knowledge about the fate and movement of pesticides over and through soils in regards to the physical and chemical properties of the pesticide and the soils. 
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I'd like to work with a spatial distribuited opensource program for shallow slope stability.
Can someone advice?
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It seems to me that the potato sizes are highly variable across the paddock, as well as the potato spatial yields (spatial dependence ~3 metres). Even we take tuber samples from multiple sites, they still don't represent the whole paddock well. The grower has suggested an app called 'PotatoSize', which calculates the proportion of tuber sizes based on the photos taken by cellphone. How about the practicality to retrofit a camera like this on-harvester to measure potato sizes on-the-go? 
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Guess it would depend on harvester if the conveyor belt allows calibration of images. That is a matter for Hutton developpers.
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Dryland, 3 foot row spacing, plant population 16800/ha
Roundup ready yellow and white maize, with chilo resistant gene
summer rainfall 400-600mm
N = 80kg / ha P = 20 kg/ha clean element K = 4.5kg / ha clean element
Urea based N, MAP(33%) based P, KCL(50%) based K
time to physilogical ripeness = 126 days
ave temp during season -> 19 deg celsius - 42 deg celsius
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I feel , first most conspicuous observation would be the change in rhizsophere environment in terms of microbial diversity followed by  bioavailability of different nutrients and  nutrient density of the crop , to be late  computed for NUE  ..
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Suppose in a basin we have a dam and we want to naturalize the flow at the outlet of the basin. What are the ways for naturalization of streamflow, so that the dam effect can be neglected. I have a long series of streamflow record prior to the dam construction.
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This has everything to do with the design of the outflow channel.  The channel must be shaped and dimensioned to mimic natural outflows corresponding to precipitation events.  Factors such as the nature of the inflow channel and incident precipitation directly on the reservoir surface will alter the flow regime and must be accounted for.  While you can mimic the flow, there will be a delay imposed by the reservoir.  The out flow rate will be driven by the levels in the reservoir and the configuration of the outflow channel.  Depending on the size of the reservoir and associated watershed, creating an effective discharge structure to mimic flows that would have occurred without the presence of the reservoir can be quite challenging. 
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this is part of an ongoing research
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 Thank you very much professor Kochar for your valuable comment 
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I have a high temperature till 180 °C humidity sensor, it is uncalibrated . In order to measure the humidity inside a testing chamber which is electrically heated till 180 °C and containing flowing flue gases, I want to first calibrate it . Any one have experience of dealing with high temperature humidity sensor calibration???? 
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Ababs.
 What i suggest you do is allow the temperature reading for couples of three to four day , take not of the humidity out side check readings of fluctuations and compare with the inside chamber temperature before you calibrate to take your reading . if you calibrate before reading you may have false results because humidity equilibration has to take place between the prevailing temperature outside the sensor and the inside the sensor chamber.
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I have some experience in seed quality testing, irrigation modeling, and other cultural practices related a production of some crops: barley, triticale, rye, Sudan grass, alfalfa, sweet corn, forage sorghum, and silage corn. I would like to document practical outputs into an academic book including: hybrids, seeding rates, soil conditions, planting dates, planting depth, tillage, irrigation modeling, fertilization, and crop rotations. are those enough to produce an academic book in my region ?   
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Sir, I think all the work that you have done is valuable & can be documented & published. Each publication is unique, and your practical experience will be of greater value than secondary information. So go ahead & publish. Best Wishes.
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Simulating seeding rate depends on seed weight and viability. This is needed by both farmer and extension staff in Jordan. Where can i find a database for crops, hybrids, viability %, and 1000 seeds weight ?  
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Hi, please check with ICARDA institution because they have a long experience of work in this field
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does any researcher calculate the eprmeability of tillage layer in clay soil when he uses modeling like Hydrus?
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One can measure permeability by looking at relative water movement rates in different soil types.  Here is a method for quantification of permeability rate for each 10cm using a Sentek Enviroscan probe.  Please see the chart below.
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Based on my research and according to number of seeds per pounds. I supposed by broadcasting that the optimum plant density per meter square must be about 130 plant per meter square. Is this accurate ?
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Dear Mohunnad,  This density is very high. ِAnyway the number of plants per meter square must be about 20-40 plant.
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Crop rotations is the head of crop management. That due to its importance in field technical inputs like seeds management, pests control, soil fertility, irrigation models, agronomic or horticultural practices and several other factors. I need a good reference in this field that could be handled and put into practice world wide.
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Based on soil quality, moisture availability and local needs,  suitable cropping systems can be designed. For instance, silvipasture can be the best option in arid and semiarid regions, if the stakeholders are engaged in livestock husbandry.
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Based on seeds weight, the agronomist can simulate the seeding rate (kg or pounds) per hectare or acre. There are various mathematical formulas for this. What is the best formula could be used ? and why ?
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Sowing standards are calculated using the following equations:
For fused-area cultures
SR = A * N / 10*EV
Where
SR - sowing rate
A - 1000 seeds weight
N - number of seeds per square meter
EV - Economic value of seed (germination %)
For trenches
  SR = 10000 * A / ID * DP * EV
Where
SR- sowing rate
A - 1000 seeds weight
ID - inter-row distance
DP - distance between plants in the row
EV - Economic value of seed (germination %)
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The storage tank volume can be somewhat between 0.3 to 0.5 cubic meters (no specific shape requirement) and preferably of a closed type apart from the water flow area from or into the tank in the closed system to avoid excessive sand or dust entry from the ambiance.
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The temperature of the water can be maintained through the development of manual cooling tower made of straw fins around the open tank, PV power can be used for operating fan.
OR it can be cooled through using fire clay tanks, by storing water and passing it through series of fire clay tanks. 
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Measuring profitability and cash flow statement in crops production is a dynamic booster for research and extension orientation.  I am looking for some papers to cite in my projected paper before publishing. My paper related extension work and cash flow statement measurements in some forage crops using treated waste water.  
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You may not get ready references. So go ahead & publish yours. 
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Big data analysis is an emerging statistical tool for the interpretation of any large volume of data. I want have your views on its applicability for perennial fruit breeding.
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In my opinion you have either two choices:
The first is to get sampling in representative way. The second to scan all of your population.
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there are various water quality classification methods based on different water quality parameters, but most of these are based on single parameters. i think on the basis of single parameter classification methods, it is unfair to judge overall suitability of water for agricultural purposes. 
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Two famous methods are used in classifications,
1- Wilcox diagram
2-Richard diagram
regards
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I'm a researcher at National researcher centre , Egypt. my email : content removed by moderator. I'm looking forward to finding a partner from Slovakia to apply for funding of a program in the agricultural field (fruit trees research).
Is there someone interested?
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Dear Dr Mohunnad 
Indeed, all Arab  countries couldn't and will not save a considerable balance (financial support) for research side. thereby, scientists and researcher looking forward to get this fund through applying for EU calls. As, you know the terms of these calls , getting a partner from EU countriens and another ......
Anyway thanks for you offer and hope o hear from you in the future
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Definitely there is inverse relationship, but i need to know the EC value in maize and its quantitative interpretation to germination and vigor in maize.
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As a base, the higher the value of EC the lower the vigor. That means that seed coat deteriorates faster and ion lechates in distilled water are more
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Question is in the area of plant biochemistery and storage technology of horticultural crops
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Its recommended to add 0.5 g of Ca or Mg carbonate,  to prevent premature acidification and pheophytin formation during the assay. 
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Hi dear colleagues, I need information of the amount of biogas or methane produced by the anaerobic digestion process of some fruits such as peaches, plums and nectarines , is that possible the amount of biogas produced by this fruit still has not been calculated in studies?
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Try to google it.
Regards.
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Does anyone have a sugar factory waste of calcium carbonate used in dairy nutrition?
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Filter cake has high mineral content, including Ca; filter cake is usually used in cattle feeding during dry season both pure  or mixed with other food. As far I know no sugar mill have calcium carbonate as a sole by product. Regards,
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Please let me know if you are aware of any commercial digital sensor(s) to measure soil nutrients (N, P, K, Mg)?
The sensors are required for a land of 5000 ha. Any ides on numbers of sensors would be an additional help pls?
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Dear Manoj Gupta,
What you are looking for doesnot really exist. Although first attempts are made.
You could use proximal soil scanning, e.g. passive gamma, as alternative. See attached example of my work.
regards,
eddie loonstra
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->Considering current land costs, can the cost of elevation be equal to or less than the cost of traditional installation?
->if the elevated structures are financed via the budget for lighting of highways will it be economicabally viable?
->will the structures improve road life as they safeguard roads from extreme temperatures and rain?
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my dear, i agree with ammar
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I am interested in the productivity that we can expect from different plant resources used in prehistory:
- number of fruits per plants or calories/kg per hectare
- we are referring not only to wild and domesticated cereals, but also to roots, tubers, or different types of fruits (acorns, hazelnuts, etc... )
I would acknowledge any information regarding existing databases, research centers or publications from which I can gather all this information.
thanks!
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Thanks to all for your kind answers. If I find anything else I'll post it here for your info.
(Dr. Acevedo when using the expression traditional I was referring to non-industrialised contexts)
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effects of industrial water pollution on the phenology, yield and production of rice pakistan papers
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Interesting. It has relation with the occurrence of agriculture drought (extent, severity) as well, as both - rainfall patterns and penology changes. Besides, microbial (soil) activities and population also changes. This calls for more detailed ecological studies for managing drought risk as well (in South Asia) 
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In the Argentina Pampas region, several agricultural land were flooded due to high rainfall and the rise of the water table. What engineering techniques can be applied to prevent flooding in plains?
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may attempt for creating avenues for large scale artificial ground water recharging by facilitating vertical movemnet as fast and as much it can be...but all depends on local site conditions...the excess parcels of flood volumes needs to be safely economically and rapidly shifted to ground water bodies even may be in wells or local acquifers. this could be one innovative way to dampen the flood peaks atleast....
the excess water if any way diverted or spread over the adjacent forest or grassed area it will be relatively a easy task...
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I am measuring NO3- in drainage waters from arable fields and for some drainage samples the sensor is dead on the true value from lab analysis, while some other samples results in it measuring too much
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I have YSI 1300 for wAter quality parameters such as ( ph,EC, TDS,temp).
I don't have NO3 sensor but It's easy to measure it by spectrophometer. 
But you need to calibrate it before using with drainage water samples may be the detection limit s or the concentrations of NO3 is very high or very low and this make the problem to sensor.
So try to calibrate it before using in the field samples
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Can anybody provide some possible methods to dispose heavy metal contaminated soil, specifically Cd contaminated soil for Cocoa Cultivation? superficial soil layers (30cm) large land extensions
Not micorremediacion with filamentous fungi or phytoremediation are a very delayed solution and does not improve the problem besides it has no applicability in the large land extensions neither industry of the cacao growers, i need cost benefit relation, Innovative ideas please.
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I used biomass of filamentous fungi isolated from the same soil (Aspergillus sp, Penicillium sp., sporotrichum sp) in greenhouse as an experiment, with good results, but I think it would be very costly and not viable or advisable to spread so much biomass in the soil, it can be counterproductive.
It is a creole cocoa-producing town, exists between 10ppm and 30ppm in soils and is of geogenic origin, in the last years the producers have been harmed by the different standards to commercialize the cocoa bean because the beans contain traces of cadmium between 0.5-1ppm and Currently allowed by World Health Organization are 0.1ppm
I'm not really sure of soil washing technique, due to water pollution, additionally this can alter soil homeostasis and contribute to spread of pathogenic microorganisms.
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- I am looking for work on the physiology and physiological characteristics of the date palm.
- The different phenological stages and the stages of development of the date palm.
Thank you in advance.
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Hoping these articles will help you
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Irrigation scheduling for annual and perennial crop are different. What are the major factors that need to be considered while planning irrigation scheduling in perennial crops like date palm?
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Kapil , find here two very informative work , directly related to fruit crop like citrus. Hope , it will give some insights...
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I have been growing tender perennial crops under three conditions, viz.,
1. Open field conditions
2. Open field + Dry grass mulch
3. Low cost polyhouse (Naturally control polyhouse)
Note: The light intensity are the same in all the three conditions.
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I'm doing research in field of crop row detection and I can't find a set of real images to test my methods. Can anyone send me images or links where I can get image examples?
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During my PhD thesis research, I have created Crop Row Benchmark Dataset (CRBD) which can be downloaded from the following link: