Jonas Jägermeyr added an answer:What is the evaporative share of irrigation efficiency 'losses'?Irrigation efficiencies relate the amount of withdrawn water to the amount that reaches the plant and gets consumed through transpiration. The remainder, so-called 'losses', either evaporate or remain accessible downstream as return flow. Irrigation efficiencies are well reported, but what is the average fraction of evaporative losses for different irrigation systems, i.e. surface, sprinkler, drip?
Thanks for your answers, the complexity of factors involved in disentangling E and T was indeed the motivation to employ a process-based dynamic vegetation model. Such a model allows to account for most relevant processes that we can still handle at the global level and the 0.5° grid cell. If to look more locally, one should clearly increase the level of detail. For this study however, LPJmL is found to be very appropriate tool as it solves the surface energy balance for calculating irrigation water demand and water stress, cooling effects through above-canopy sprinkler application are accounted for and interception losses and its effect on plant transpiration are explicitly calculated.Following
Elaine Ammini Sabu added an answer:Is it worth publishing with Lambert Academic publishers?My inbox has repeatedly been spammed from lambert Academic publishers. Is it worth publishing with this publisher. Do they have any authenticity. There is a lot of bad stuff written about this. Still, people publish their thesis with them. How one could publish your results in the form of book when its already published in the form of research articles. Are they peer reviewed....Suggestions welcome
Thank u so much for the discussion....its really helpful since i received the similar email today....Following
Krishnan Umachandran added an answer:Can you suggest any marketing tools for agricultural products?The educated community has taken over farming and brings in a judicial usage into farming through the following, 1. Infusion of technology and expertise in agriculture practices. 2. Intervention in food processing and storage practices. 3. Establishing national and international market linkages.
The value chain is bigFollowing
Vijay Singh Meena added an answer:Does someone known role of Allechemical in the growth promotion of plants as well as microorganisms?
How can allelopathy crop play an important role in minimizing serious hazards of the modern agriculture such as environmental pollution unsafe products anddecline of crop yield?
Luis González-Vaqué added an answer:Do you have contributions for an international treaty on plant genetic resources for food and agriculture?I need your contribution for compiling project proposal for Balochistan province having below three themes:
Your valuable comments will highly be appreciated
Contact Dr. José Esquinas Alcazar (Universidad de Cordoba-Spain).Following
Gordon Couger added an answer:Is NDVI a good indicator for agriculture yield or production?
While calculating agriculture yield and production, NDVI is correlated with yield and extrapolated over the entire study area. Is NDVI a good indicator for agriculture yield and how accurate is it?
I used NDVI to estimate the amount of Nitrogen needed to top dress Hard Red Winter Wheat just before it joints in Northern Oklahoma the 3 or 4 years I wrote code for the prototypes built by Biosystems & Ag Engineering at Oklahoma State. Reflected Solar NDVI was an excellent method as if the proper wavelengths were used. Averging 128 NDVI readings or more per meter proved extremely robust even with poor signal to noise ratios.
Others in the department found NDVI values between various wavelengths effective for fertilizing other crops. The same equipment loaded with different chemicals scanning fallow fields reduced the herbicide by 50% need to control weeds. I didn't explore the importance of wavelength on differentiating plants from the soil. The project wasn't at the stage of weed identification. The algorithm never got past trying to kill it if it was green. All the effort was put in to fertilizing wheat.
The USDA used NDVI from the first MODIS Satellites effectively in the early 1970's to identify field crops.
Selecting the best wavelengths for the desired results is critical to obtaining the best NDVI results from the available data. I haven't kept up, so I expect there are still gaps in the spectral coverage camera's on the MODIS satellites.
An often overlooked source of error are minerals that are reflective to the wavelengths used to calculate NDVI. The time of day needs correction before 9:00 A.M. and after 3:00 P.M. Solar time. If it is not already corrected.
I tried measuring NDVI up to 400x with a microscope. Although the results are incomplete they look promising.Following
Gandhidas Sonajirao Lavekar added an answer:What is the standardization of medicinal plants?
What standards must the producer comply (observe) with? This is with regards to planting, agricultural operations, harvesting, drying, extraction, formulation and so on.
Glycerin is an important solvent, the alcohol as solvent wipes out many useful constituents where as Glycerin preserves, such extract may bring in to Soft gel capsule form.Following
Nicolas Salliou added an answer:Are agricultural landscapes emergent structures?
I wonder whether agricultural landscapes can be described as emergent structures. Are they more than their individual components (crops, forests, hedgerows, orchards and meadows)?
Is there some work about emergence and agricultural landscape?
What are the properties that one can describe from agricultural landscape emergence?
@ Davide : Thanks for your answer. This is very interesting. I was quite baffled by the following assumptions : " the land-use succession in a given place depends only on the land-use successions in neighbouring plots"
The result of the map is quite good but I still don't get the way this assumption works as I feel that in a landscape some plots LUs are absolutly not defined by neighbors when they are not from the same farmer/Owner.Following
Kiran Rs added an answer:Anybody out there who has worked on the outreach strategies of a mobile or tablet based technology in rural areas?
What are the basic techniques used to convenience the marginal people to adopt a cost involving technology which will enhance their agriculture production and livelihoods ?. I need information on the marketing or outreach strategies for the implementation of mobile or tablet based technology in rural areas,
Case studies on different Mobile and Tab based technologies for agriculture and rural development, its implementation techniques can also be shared.
Dear Kwamina Ewur Banson, Thanks for the detailed answer, if you get any other file or document on this topic please forward it to my mail id firstname.lastname@example.org.Following
Promila Kapoor-Vijay added an answer:Does anyone have any information or publications on the status of the cultivation of domesticated Chenopodium album in the Himalayas?
Chenopodium album is one of the more common Chenopods in Eurasia. It's considered as a weed in Europe but there are some studies that confirm its domestication in the Himalayas. This species, very diverse and unknown (2x, 4x and 6x), was cultivated in China, India, Nepal and Bhutan. But today it's very difficult to know the real superficie covered by C album as a crop. Where are the farmers, in which agroecological conditions, for what kind of uses (grains, leaves, etc.)?
One reason for the lack of documented information on chenopods is that many past reports misidentified Chenopodium album as a variety of Amaranth (Amaranthus anardana).Following
Gregory Yom Din added an answer:What are the factors of global competitiveness of the national agro-industry?
What are the factors of global competitiveness of the national agro-industry? Is there a model or models by which it can be determine and compare the competitiveness of this particular industry? I'm looking for literature references which specifically refer to this model or models.
Marek Barta added an answer:How can I store aphid samples?
I want to save some turnip aphid samples temporarily, so I can send them for identification later. I want to know if I can use ethanol and at what percent and is there any other special way to store those insects.Following
Jaime Cuauhtemoc Negrete added an answer:Procedure to put new online Journal?
I am interested to start new online Journal on "International Journal on Farm Power Machinery & Energy in Agriculture". Experts are requested to suggest the procedure for online starting for it..(like steps...)
because money is needed to seek support with agricultural machinery companies
and just to congratulate him on his initiative and that we need a journal as it is proposed to startFollowing
Andrés M. Moncada-Aguilar added an answer:How is the IPM (Integrated Pest Management) in your countries?
IPM was born in the USA as the ideas and working results of Californian entomologists in the early 1950s. IPM is very logical from environmental and economic point of view and is an antithesis of blind calendar tied chemical control. In 1998 USDA announced the main strategy of IPM as prevention, avoidance, monitoring and suppression (PAMS) of pests. Unfortunately, growers and pest (icide) managers did not recognize compatibility (integration) among PAMS as it was thought by the founders of IPM. Another trouble: in 1993 USDA, EPA and PDA called for a national commitment to put into practice IPM on 75% OF US crop acreage by 2000. Now, according to estimations true IPM is being practiced on only about 4-8% of US acreage (Ehler and Bottrell, 2000). Ehler and Bottrell (2000) call this situation the illusion of IPM or they claim this can be IPM without I ; or if some call the present practice IPM it is only integrated pesticide management.
Economical success has been realized in Germany where researchers, educators, growers, legislators have done their best and IPM is being practised at some agricultural areas (Galli, 2005).
In other countries rhetoric predominates exclusively when mentioning IPM also these days. Unfortunately, use of IPM as it was defined originally is rather an illusion or not even that. Main reasons of this failure are the lack of necessary human knowledge, awareness, missing of interest, investments and legal frames, but mostly the hegemony of some dominating human attitudes which cannot accept apparently uncomfortable things. For implementing IPM it is necessary multiple knowledge (comprehensive familiarity on pests, their ecology, natural enemies and all linked fields), an operative pest forecasting system (at national, regional and local level) and several working values which can be determined merely during previous investigations. IPM can put into practice with a common action of researchers, teachers, growers and legislators. Unfortunately, it needs investments from the beginnings.
The most important or basic notions in IPM are Economic Threshold (ET) and Economic Injury level (EIL) without these values there is no IPM.
HOW HAVE YOU IMPLEMENTED IPM, ET AND EIL IN YOUR COUNTRIES?
Ehler, L.E. and Bottrell, D.G. 2000. The illusion of integrated pest management. Issues in science and technology on line. pp. 6. http://www.issues.org/16.3/ehler.htm
Galli, P. (2005): 50 Jahre integrierter Pflanazenschutz im Obstbau in Baden-Württemberg. Landinfo, 5: 6-10.
Smith, R.F. and Reynolds, H.T. 1966. Principles, definitions and scope of integrated pest control. Proceedings FAO Symposium on Integrated Pest Control 1: 11-17.
Stern, V.M., Smith, R.F., van den Bosch, R. and Hagen, K.S. 1959. The integrated control concept. Hilgardia, 29: 81-101.
Michelbacher A.E. and Bacon, O.G. 1952. Walnut insect and spider mite control in Northern California. Journal of Economic Entomology, 45:1020-27.
In my country the IPM is more technology in areas of intensive agriculture, especially vegetables. It also takes place in traditional crops such as cotton, corn, wheat, beans, sorghum, alfalfa, etc. The programs are established between technical, government, farmers and distributors of agrochemicals.
In Mexico there are a variety of products, many of which have not been authorized in developed countries, that is why pest control in our country is usually very effective.
Sometimes it is expensive, which is only profitable in expensive crops such as vegetables. To be profitable in traditional crops requires intensive agricultural practices.Following
W John Martin added an answer:Is there anyone working on drones for biosensor application in smart agriculture?
I am writing a book on biosensors for agrifood sector and I am looking for a researcher working on the use of drones for biosensor/sensor application in precision farming.
I am pleased to provide a composite photo on the "Use of Drone to Monitor Enhanced Production of Chlorophyll in Agricultural Crops Resulting From KELEA Activation of Water." Kind regards, John.Following
Kwamina Ewur Banson added an answer:Where can I find papers on the creation of dust during the mechanical pruning?I'm working on the dust in agriculture and the possible risks for the workers. Right now, I'm focusing on the mechanical pruning and the dust creation. I have not found any interesting papers or articles. Can somebody help me?
please find attached document which is about environmental management quide for vineyard and does dust emphasis on dust creation during mechanical pruning.
S. G. Tan added an answer:Why are Impact Factor journals related to agriculture very low? While most vital and the most advanced in the science world. What are the Impact Factors agricultural research?.؟
Agriculture scientists in the developing world should start citing one another's work whenever and wherever relevant instead of just citing papers from the developed countries.
For tropical agriculture especially, work done in the tropics and published in regional or local journals are often more relevant than those done in temperate countries and published in international journals. If we, the agricultural scientists in the tropics ,do not cite our own work, who will then?Following
Ashwani Kumar Tiwari added an answer:How can I plot the results of permeability index in a Dooneen plot?
i am unable get this reference regarding the above question if anybody have it please forward me.
Doneen LD (1964) Notes on water quality in agriculture. Davis: Water Science and
Engineering, University of California
Thank you in advance.
First calculate your data according to this formula
PI = (Na + HCO3 )/ (Ca + Mg + Na) ×100
all concentrations are in meq l-1
Then plot the Doneen diagram on Grapher Software.
Kelvin Moseti added an answer:What is the state of application of nanofertilizers and nanopesticides in tea plantantions?
Are there nano-fertizer formulations for tea? If yes I would appreciate information or links to information on the same with regard to manufacturers/suppliers and field trials data. The same case applies to nano-pesticides
The link you provided is a very interesting read. Indeed as the author of the article puts it;
" the potential for nano-enabled pesticides is unbelievable, but it is still a dream at the moment"
"the environmental fate for nanopesticides is a big, black hole"
...In the article it is clear though that quite a good number of agricultural pesticides already in shelves already contain nano-sized particles, which, by definition, would make them nano-enabled pesticides;
"An initial scan revealed that 90 percent of the dozen pesticide products Harper and her colleagues have tested contain particles in the nanoscale range. Now she has to determine whether the nanoparticles are an active ingredient, a chemical stabilizer or simply a benign component that’s been in pesticides all along, unseen until recently."
It is clear that alot needs to be done in this interesting area and it needs not be said, IT IS NOT BUSINESS AS USUAL!Following
B.R. Rajeswara Rao added an answer:Whether utilization of agriculture by-products or wastses as supplementary cementitious material is commercially viable?
Whether agro-wastes can be commercially exploited as cementitious material? Leaving, Rice Husk Ash is there any other agro-waste commercially used as cementitious material? What are the physical and chemical proprieties agro-waste materials should possess for its suitability as cementitious material?
Check this thread:Following
Velu Ethirajan Nethaji Mariappan added an answer:Can any one post information on field capacity/available water holding capacity of different types of soils?
Can any one post table on field capacity/available water holding capacity of different types of soils?
You may to look for Indian Soil Science Journal, Journal by Maharastra Agricultural University, MASU (Madras Agricultural Students Union) Journal and NBSS&LUP Reports. In case of further information contact my email idFollowing
Elsiddig Ahmed Elmustafa Elsheikh added an answer:How can scientific understanding of beneficial soil microorganisms be utilized to increase agricultural production?
I have read that researchers have noticed significant differences in soil microorganism community structure / ratios of fungus:bacteria in samples of grassland compared to agricultural fields.
Soil microbiology is a (relatively) young discipline. Are we at the point where we can utilize what we have learned about soil microorganisms to agricultural applications?
Dear Jacob Yu
In addition, you will find useful information in the following articles and websites. Articles include:
(1) S Compant et al (2010) Plant growth-promoting bacteria in the rhizo- and endosphere of plants: Their role, colonization, mechanisms involved and prospects for utilization. Soil Biology & Biochemistry.
)2) Bernard R. Glick (2012) Plant Growth-Promoting Bacteria: Mechanisms and Applications. Scientifica.
Whereas the websites are also informative:
(1) Biotechnology: Role of Microbes In Sustainable Agriculture And Environmental Health
(2) Beneficial and Effective Microorganisms for a Sustainable Agriculture http://www.agriton.nl/higa.html
(3) Beneficial Microbes for Agriculture
(4) THE ROLE OF MICROBES IN AGRICULTURE - OTC
Anjana Jayasanka Atapattu added an answer:How would I add a compound in my experimental plot to maintain a particular recommended concentration of the compound in soil? ml/acre<->ml/kg of soil
If i have a commercially available compound (with percentage purity: 50%), whose recommended dose for usage in soil is like: 250 ml/acre,, then how much weight/volume should i apply to mine experimental plot of area: 0.33 m2 with soil weight of 500 gram to maintain the same concentration as of th recommended one?
I am a little confused about conversion of the units: ml/acre <---> ml/kg of soil
Peyman Falsafi added an answer:Dose anybody have any experiences or findings about applying UAVs in destroy estimating in agricultural insurance?
Applying UAVs (Unmanned Airplane Vehicles) in agriculture and farming systems is a new way in precision agriculture. What we want to know is using the UAVs in insurance industry particularly to help the small farmers in disasters and critical and high risk agricultural situation.
Dear Krishnan Umachandran,
Many thanks because of your useful answer to my question.
Inga Wawrzynowicz added an answer:Does anybody know a (free) paper on precision farming/ agriculture?
Especially about problems of adopting this technique?
I am searching information for my master thesis.
Thanks for all the comments and Links, They've all been helpful and interesting!Following
Kazutaka Nakano added an answer:Why is Jhum cultivation still prevalent in the north eastern region of india?As above.
I suggest to Dr. Swabera islam that she shoud peruse Professor P.S. Ramakrishnan's prominent book (1992) and my recently published paper (2014) whose full text is available in the catalogue of the Research Gate. I am sure for her to find a clue to the excellent answer to her question.Following
Patrick Druggan added an answer:Was agriculture a benign or malign invention?The conventional view is that the discovery of agriculture about 7000 years ago in N.Europe (as the last ice age came to an end) by concentrating the production of food in one place released man for other activities. It catalyzed the development of trading which led to the development of written records and mathematics.
On the other hand Bryan Sykes, in "Adam's Curse" (A book which charts the decline of the Y chromosome and forecasts its eventual demise [recent studies have refuted this] and has had mixed, and sometimes contradictory, reviews in Amazon) presents some interesting (I think) arguments that agriculture has had some more malign influences.
1) Nutritional status declined as the diet was then dominated by carbohydrates
2) More sedentary lifestyles led to decline in physical condition
3) Whereas the hunter gatherer lifestyle was compatible only with monogamy, a man could plant enough grain to support two or more families. Land therefore acquired value and strong, ruthless individuals could buy, extort or simply take land from weaker individuals. Ownership of land therefore became linked to wealth, power and fecundity. Women married to such men would have more children and women who were attracted by power increased as a proportion of the female population. Sexual selection therefore led to men who were increasingly aggressive and power seeking and women who tended to be attracted to such men (I realize that this is an over-simplification and exaggeration but it contains an idea which, if valid, accounts for the nature of the alpha-male and why they are nearly always promiscuous. Of course all men are not like this; some remain with a hunter-gatherer personality and others have elements of both. Women likewise, mutatis mutandis. It also accounts for the absence of drive for success in many women but not, interestingly, for male attitudes towards women).
From this we can break down the big question into smaller subsets:
a) Was this form of agriculture always inevitable or were there alternatives (at least theoretically)?
b) If there were alternatives what were/are they and what are their benefits and disadvantages?
c) Is Sykes right in his analysis and conclusions?
d) If not, why not?
e) Are there any reasons to believe that any of the alternative societies that might have evolved would have been an improvement on the one in which we now find ourselves?
Agrarian society meant more could be achieved with less. If we are considering an evolutionary driver, how could and agrarian lifestyle drive this desire to acquire more? Competition from pastoralist who need much more land and cannot store food sources for long term like agrarian societies.
Killing is a fundamental skill for pastoralists and involves an understanding of where and how to cut to butcher an animal. These are skills used in warfare. This is why soldiers are trained. After World War II General Marshall interviewed American combat veterans and found that 96 % of them did not shoot to kill. Two percent taught themselves, or were hunters; and the other two percent were psychopaths.
What I am stating is a hypothesis that was proposed by John Keegan. It appears in "A History of Warfare". John Keegan was a military historian who taught at Sandhurst for 26 years. I have never been a member of the armed forces, but like you I have an interest in who we are as people.
I think competition is part of life, from bacteria that evolved 3.8 billion years ago, until now. There is nothing else - it is the nature of life itself. I don't believe that agrarian society made it more so. It did allow storage of resources that can be utilised to acquire manpower to attack others - but Ghengis Khan was a pastoralist and conquered civilised China, an agrarian society.
The analogy on the storage capacity is important from my point of view as this translates in to the storage of money too. What agriculture gave us was the capacity to store materials that could feed an army, that fed amplified an inherent competitiveness on a massive scale. That is why the law was necessary.Following
Bikram Keshari Senapati added an answer:What is the bio-energetic cost-benefit to a system by using non-native species of organism/s?
There are number of cases for waste management, land restoration, wasteland development, agroforestry and agriculture where non native species of organisms and external organic input are applied that might be detrimental to the system in the long run.
Thanks to all who have enlighten the topic and to approach possible alternate answer. But my question is not concerned to one or few species with targeted short term solution. The bioenergetic cost-benefit has to be calculated in terms of biodiversity complex and material resource stock of a system that produce resilience for sustainable production and conservation. Take the example of waste management, biofertilization, biremediation, land restoration etc. Short term benefit should not nullify long term holistic development of the system. Bioenergetic cost-benefit analysis could be an integrated management tool for assessment and maintenance of the system.Following
Mahmoud Omid added an answer:Are the products of greenhouse cultivation are perceived as inferior for taste and quality?
Please compare greenhouse to open-field cultivation. Some consumers equate the phrase “open-field” cultivation (OFC) with natural products. What is your preference and perception on the final product quality of greenhouse (protected) cultivation verses OFC? What are the determinants of the perception of quality for a typical production (e.g., tomato) grown inside the greenhouse or grown outside in the open-field?
Generally, a commercially prepared soilless media is used for containerized transplant production. This media must be free of insects, pathogens, nematodes and weed seeds. Compared to field-grown transplants, greenhouse transplants have several advantages. They can be produced earlier and more uniformly than field-grown plants. Their growth can be controlled more easily through fertility and water management and they can be held longer and harvested when needed. Because containerized plants are less crowded and healthier; stockier plants can be produced. Finally, container-grown greenhouse plants have a media-enclosed root ball, which retains moisture and root integrity at transplanting, reducing transplant shock.
Full publication source at:Following
Frederic Andres added an answer:Are there any metadata set to describe the agriculture early warnings?
Are there any metadata set to describe the early warnings related to agriculture disease and disaster?
The metadata focus is the observation of the early warnings.
Thank you. it seems interesting. We have been looking at observation-related metadata set such as the application of 5W1H to agricultural observation.Following
The science of soil cultivation, crop production, and livestock raising.