Science topic
Plant Nutrition - Science topic
Explore the latest questions and answers in Plant Nutrition, and find Plant Nutrition experts.
Questions related to Plant Nutrition
What is the role of microorganisms in agriculture as biofertilizer and role of microorganisms in plant nutrition and soil health?
Do microorganisms play an important role in creating nutrient rich soil and role of microorganisms in soil fertility and plant nutrition?
How are microorganisms important in nutrient availability and transformation in the soil and role of microorganisms in plant nutrition and health?
How microorganisms are important for maintaining of healthy soil and biodiversity and role of microorganisms in plant nutrition and soil health?
How are living organisms important for improving soil fertility and role of microorganisms in plant nutrition and soil health?
How do soil microflora interact with plant roots and influence plant nutrition, health, and productivity?
What is the role of decomposers in the cycling of matter in the biosphere and role do soil microbes play in plant nutrition availability and uptake?
I understand that it is possible to estimate the capacity of a certain soil using the freundlich and Langmuir models. I am sure that running this models is quite an acquarate approach to determine P fixation.
I decided to ask this question, because I feel that for farmers it is a very complex approach. Therefore I was wondering if there is a different process to follow that would be more in-practice oriented situations?
Its application will help reduce usage of granular urea by about 14% and that of DAP initially by 6% and later by 20%. It will lead to saving in foreign exchange reserves of the country, improvement in plant nutrition and 100% availability of nutrients in the soil.
What is the importance of the rhizosphere to plant nutrition and importance of mycorrhizae in crop production?
How nanotechnology is an efficient tool in plant nutrition management and role of nanomaterials in improving the nutritional value of crops?
What is the role of microorganisms in plant nutrition and soil health and nutritional requirements of microorganisms of industrial importance?
How microorganisms are important for maintaining of health soil and biodiversity and role of microorganisms in plant nutrition and soil health?
How will the action of microorganisms affect soil fertility and role of microorganisms in plant nutrition and soil health?
What is the importance of the rhizosphere to plant nutrition and how do rhizosphere microorganisms affect plant growth?
If I build my soil organic matter, how will it affect plant available nutrients and importance of soil organic matter in plant nutrition?
How does high content of organic matter in soil enhances its water holding capacity and plant nutrition?
Discuss the role of soil microorganisms in enhancing soil fertility and plant nutrition. Provide specific examples of how microbial activity contributes to soil health.
I am looking for a post doc. position on plant nutrition, stress physiology or climate change in agriculture. I thank all the scientists and researchers who can help me on this topic.
Regards
Amin
Recently, I have analyzed the relationship between urbanization and nitrogen deposition. The research area is in Tianjin, where the soil nutrient content is relatively low and the soil is weakly alkaline (7.26-8.64). We did not directly measure nitrogen deposition, but indirectly represented nitrogen deposition through NO2 data from meteorological monitoring points (results from other cities). The results also indicate a quadratic function relationship between them. Based on data on soil available nitrogen content, pH, and plant leaf nitrogen content (woody and herbaceous), we found that soil available nitrogen decreased with an increase in distance from the city center (or atmospheric NO2 content), while pH showed the opposite trend, with higher pH in areas with high urbanization (or atmospheric NO2 content). Plant leaves also exhibit higher nitrogen content as they are farther away from the city center (or with lower NO2). According to existing research results, urbanization is usually accompanied by high nitrogen deposition, manifested as higher soil available nitrogen and obvious soil acidification in areas with high urbanization. Even if the system experiences nitrogen saturation, the input and output of nitrogen will still be equivalent. And our results on soil and plants are more like a decrease in nitrogen deposition in areas with high urbanization.I would like to know which details were overlooked in our analysis or which factors should be considered to address the problem we are. Any relevant discussions are appreciated.
I am working with a nitrogen sensitive species trying to induce somatic embryogenesis. The textbooks I've gone through so far insist that casein hydrolysate - or another reduced nitrogen source - is crucial to initiating embryogenic callus. but many of the protocols I've read don't include CHL or any other nitrogen sources. So what's the truth here? Is this reagent crucial or not? I've ordered the casein hydrolysate just in case, but am trying to figure out if I'll even need it.
Do bacteria recycle organic matter and role of microorganisms in plant nutrition and soil health?
How do microorganisms in the soil affect the soil's productivity and role of microorganisms in plant nutrition and soil health?
What is the difference between macronutrients and micronutrients in plant nutrition?
What’s function and application of soil microorganisms in forest ecosystem role of microorganisms in plant nutrition and soil health?
How can plant nutrition be optimized in horticulture crops to improve growth, yield, and quality?
What is the application of nanotechnology solutions in plants fertilization and applications of nanotechnology in plant nutrition?
I'm interested in opinions and papers regarding these elements for plant nutrition and its relevancy today? Will be doing an article so please be prepared to go 'on record'. Thanks
Hello dear researcher,
I am very eager to participate in writing part of your research, if possible, and do whatever my scientific ability allows. My favorite topics are plant nutrition, environmental stresses and other aspects of crop physiology. Thank you very much.
AHAD MADANI
Ph.D in Agronomy.
My research investigated the impact of water stress on plant nutrition. Phosphorus content was stable regardless of increasing PEG concentration. Is there any valid explanation on why as i am trying to find the reason
New books. Maybe 2010 till today and only about all fruit trees! Reference and handbook books nutrition fruit trees.
According to inquiries developed so far through Scientific Method, roughly from last 400 years, plants need 17 essential elements to produce and complete its vital cycle, otherwise there will be deficiencies with negative consequences upon productivity or even causing whole death of plant. Overall these elements are divided in two categories: macro (C, H, O, N, P, K, Mg, Ca, S) and micro-elements (Fe, Cu, Mn, Mo, Ni, B, Cl, Zn). Equally, another main concept inside plant nutrition is "The law of the minimum" which states that if one of the essential nutrients named before are scarce, the plant productivity will go down even if remaining nutrients are plenty. This statement is attributed to german chemist Justus Von Liebig in 1840, although, 12 years ago before that (1828), Carl Sprengel, a german agricultural chemist stated that the mineral elements are necessary for life plants and irreplacable. ¿What do you think about? ¿Who's the idea owner?
Hi all professor. Could you please tell me what cause this problem on melon. as you notice, some seeds germinated inside fruits. why?
Hi everybody,
Most of the springer journals (e.g., Journal of Soil Science and Plant Nutrition or Journal of Plant Growth Regulation) didn't publish any new articles (Online first) after 3rd December! is there any problem? or updates?
- The chloride anion (Cl-) has traditionally been considered a harmful element for agriculture due to its antagonism with the nitrate anion (NO3-), and its toxicity when it accumulates in high concentrations under salinity conditions. On the other hand, Cl- is an essential micronutrient for higher plants, being necessary in small traces to fulfil a number of vital plant functions such as: cofactor of photosystem-II and some enzymes; neutralisation of positive charges in plant cells; and regulation of the electrical potential of cell membranes. Below a specific level in each species, plants suffer symptoms of Cl- deficiency, altering these cellular mechanisms and negatively affecting the capacity for cell division, cell elongation and, in short, the correct development of plants. However, there are indications in the literature that could suggest beneficial effects of Cl- fertilisation at macronutrient levels.
- The results of my thesis have determined a paradigm shift in this respect since Cl- has gone from being considered a detrimental ion for agriculture to being considered a beneficial macronutrient whose transport is finely regulated by plants. Thus, we have shown that Cl- fertilisation in well-irrigated plants promotes growth and leads to anatomical changes (larger leaves with larger cells), improved water relations, increased mesophyll diffusion conductance to CO2 and thus improved water and nitrogen use efficiency (WUE and NUE, respectively).
- Considering that the world's population is expected to reach 9.8 billion people by 2050, global efforts are being made to increase food resources by improving crop productivity. This requires practices that make rational use of available resources, particularly water and nitrogen (N). Only 30-40% of the N applied to the soil is used by plants, and 80% of available freshwater resources are currently being consumed by agriculture. On the one hand, an excess of NO3- fertilisation in crops leads to an increase of NO3- content in the leaves of plants of different species that are consumed fresh (e.g. spinach, lettuce, chard, arugula). The presence of high levels of NO3- in food can cause health problems such as methaemoglobinaemia or promote the accumulation of carcinogenic compounds. These practices also lead to an increase of percolated NO3- in aquifers, causing environmental problems such as eutrophication.
- In broadleaf vegetables, NO3- and its derivatives can accumulate to high concentrations. When ingested, these compounds are processed by enzymes found in saliva and from bacteria of the gastrointestinal microbiota, generating NO2-, nitrosamines and/or N2O5, substances that promote stomach and bladder cancer, causing a serious problem for human health. When NO3- enters the bloodstream, it transforms haemoglobin into methaemoglobin, no longer able to transport oxygen to the lungs, causing babies to suffocate and die, which is what is known as 'methaemoglobinaemia' or 'blue baby disease', and which, as we have already mentioned, was made visible by Greenpeace on numerous occasions. Thanks to these actions, in the European Union there is a very demanding regulation of NO3- content in water for human consumption, as well as in vegetables and processed foods especially dedicated to the production of food products for susceptible groups such as babies, the elderly, vegetarians and vegans. Thus, the European Union has established a series of strict standards (1881/2006 and 1258/2011) that determine a series of thresholds for NO3- content in the most widely consumed vegetables (such as spinach and lettuce), and especially in baby food with much stricter limits, where it is even recommended to avoid the consumption of certain vegetables in babies before the first year of life and to limit their consumption in children from 1 to 3 years of age. At the environmental level, the European Union already created in 1991 the Nitrates Directive (European Directive 91/676/EEC), to protect water quality throughout Europe, encouraging the use of good agricultural practices to prevent NO3- from agriculture from contaminating surface and groundwater.
- Substituting certain levels of NO3- for Cl- in fertigation solutions can reduce these problems without negatively affecting plant development. On the other hand, in the context of current climate change, the strong demand for water from agriculture threatens the freshwater supplies available to the population. Therefore, increasing WUE and NUE, as well as preventing water deficit and increasing water stress tolerance in plant tissues are very important traits for crops that could be favoured by the use of Cl- in new agricultural practices. Thus, Cl- could establish a synergistic improvement in a more efficient use of water and nitrogen for a healthier and more sustainable agriculture.
References:
Exist there any standard text book in universities for students dealing seriously with amino acid fertilizers as state of the art in plant nutrition ?
Look here, they make much proaganda in Africa with this I this, I think myself pseudo / fake fertilizer and pest regulator but also here in Europe with similar EM (Effectice microorganisms)
(plant, fertilizer type, additive rate, method of addition, results)
In organic farming, it is said that 'feeding the soil always feeds the plants'. How can marginal and small farmers supply such a huge quantity of different organic manures every year ?
My greenhouse maize plants are too thin. They have strips on the leaves.
The conditions are 14h day/10h night; 26-28°C day and 20-22°C night; 60% humidity; peat soil mixed with little sand.
I use Osmocote exact Standard 3-4 for fertilization. It is a granular and should work for 3- 4 month. It contains all important nutrients which dissolve gradually:
16% nitrogen (7,4% nitrate-N and 8,6% ammonium-N)
9% P2O5
12% K2O
2,5% MgO
0,02% B
0,056% Cu
0,45% Fe
0,06 Mn
0,025% Mo
0,02% Zn
The plants are at V4 stage now.
I think that the plants have a nutrition deficite. What is the best fertilizer for greenhouse maize? Du you have any suggestions for improvement?
Thanks!
Hello everyone,
I've been struggling with this matter:
We have data on sugar cane production (soils, treatments, weather …). We want to understand in which conditions soil/plant nutrition will yield the best result. It is hard to infer causality as some treatments are often performed jointly and we are not able to isolate the partial effect of the applications of interest.
Any one has any leads on interesting statistical methods please ?
Thanks a lot
Hydrogen fuel cell use O2 from atmosphere or cylinder and generating energy and distilled water. As being explosive in nature, Hydrogen fuel cells may blast and harm public nearby. Further consumption O2 particularly in residential areas may create problem for public inhalation and COx emissions may further disturb.
Use of distilled water out may harm agricultural/ plants nutrition if not collected properly and disposed off.
What will be impact of mass scale use of hydrogen fuel cells as energy source?
Dear all,
I am wondering after how much time of organic agriculture one would expect to run into a deficiency of geogenic nutrients (P, K, etc.).
Let me explain: From what I understand, mineral fertilizers are largely forbidden in organic agriculture and organic fertilizers as manure or compost are sourced from other crops mostly on the same farm. This practice transfers nutrients from less nutrient intensive crops to higher demanding sites, but does not replace the nutrients exported through the harvested products. Those products go to consumers and the nutrients end up in waste water treatment plants and/or surface waters.
As mineral weathering is a slow process, I guess that nutrient stocks in the soils are depleted over time. Please correct me if my reasoning is wrong at some point. I would like to know if there are mass balances estimating this time for different crops/landscapes?
PS: obviously this argument does not hold true for N as it can come from the atmosphere through nitrogen fixing organisms.
Is it possible to conduct an experiment without proper control where the effect of several doses of a particular nutrient on a particular crop will be evaluated? Is it possible to compare these doses with one another rather than comparing with a formal control using DMRT or turkey HSD? Again if we take two factors( two different nutrient sources and their respective level) is control is still needed as levels? For example if I take thee doses of nitrogen (100 kg N/ha, 150 kg N/ha and 200 kg N/ha) and three doses of potassium (50 kg k2O/ ha 100 kg k2O/ ha and 150kg k2O/ ha) in FRBD design; is it necessary to add another level as the control in nitrogen where no nitrogen will be applied?
What is more reliable for establishing optimum leaf nutrient concentrations of plants, particularly trees? The focus is on boundary-line approach and compositional nutrient diagnosis norms.
What are the phosphorus release strategies installed from the soil?
Anthocyanin pigments have several colors that vary depending on their influence on a range of factors, including acidity of the medium, temperature, level of plant nutrition, agricultural servicing ..etc.?
I am working on a dataset to derive optimum and sufficiency ranges of leaf nutrient concentrations in olive. I am searching for a reliable reference to compare it with the ranges generated by me.
Is it possible for symptoms of nutrient deficiency to appear on wild plants?
I have sort of data consist of two variables --dependent and independent-- and want to fit it in linear-plateau form. How to do that in excel or other software and how to identify the inflection point?
I need to evaluate the effect of elicitors and fertilization doses in the hormonal, spectral, and physiological response in Citrus latifolia plants infected with Candidatus Liberibacter asiaticus (CLas) in a greenhouse. The challenge is 1) to found for the best method of infection 2) to standardize a methodology to have diseased plants in a short period and that the plants get sick a similar period for later analysis with the same conditions.
I would greatly appreciate it if someone has an idea or experience with the intentional infection of plants with CLas. Thanks a lot.
Can plant nutrition with fertilizers have a negative or positive effect on plant resistance to diseases and insects?
We repeatedly measured the same sample (QC0.2) using an ICP-OES, but the intensity decreased along with the analytic sequence for Zn, Cu, Fe, as well as other elements.
The sequence is:
[2Blank + QC0.2] repeat 14 times
QC0.2 is 0.2 ppm of multielement ICP standard in 2% HNO3.
The intensity of Zn at 202.548 nm, for instance, decreased about 30% from the beginning to the end.
The data are attached.
We have checked the hardware: like the position and cleanness of the spray chamber, the pump tube, the plasma torch, etc., but still, we couldn't find the problem causing this intensity dropping.
Has anyone had ever experienced a similar problem? How did you solve it?
Your answers will be very helpful for us!
I use light protected jars and big falcon tubes to grow my plants. Usually, I don't get algal contamination when growing plants for 2-3 weeks. But, sometimes I get algal growth in my samples. It would be great to have your views on following questions.
1. Is it common?
2. How do you deal with it?
3. How much impact it can have on normal growth and development, if I am regularly changing the media every 2 days?
4. Can I use MICROPUR CLASSIC MC 10T tablets?
5. Although, hydroponics is a non sterile system; is it okay to consider this system for comparative physiological & molecular studies if I am getting mild algal growth once in a while?
I have received conflicting information about the exchange of ions during K+ uptake by roots in hydroponic systems. The first explanation is the root releases H+ in exchange for K+ to maintain electronegativity in the hydroponic solution thus lowering the pH. The second explanation is the root releases carbonates in exchange for K+ thus raising the pH. Which explanation is correct?
I know that there are different K+ transporters (low affinity at high K+ concentration, high affinity at low K+ concentration). Could these conflicting explanations be based on different K+ transporters?
Thank you!
Calcium nitrate Ca(NO3)2 given same N use efficiency in all parts of plants which application in acid soil low pH. in comparison for NH4 sources, I appreciate all scientists comments, that could be explaining those reasons. thanks in advanced.
Foliar fertilization is a quick and efficient way to improve crop nutrient status during periods of high nutrient demand in the crop, or soil-applied fertilizers less available to the plant.
My questions what is an appropriate time to supply nutrients as foliar for sugarcane crop. The nutrient contains nitrogen, phosphorus, potassium, Sulfur, Calcium, Magnesium, zinc, iron, manganese, and copper when we added as a single or combined system.
. it is critical to determine the effect of crop load on the capacity of properly timed foliar fertilizers to increase the yield of sugarcane.
The question for researchers in the fields of soil science, plant nutrition, crop physiology and agronomist specialized in sugarcane crop.
Therefore, my request is to provide me with any practical suggestions to increase my knowledge concerning these issues, besides the literature review, technical report and articles also are needed.
During water deficit stress, plant shows several responses. If fertilizers or other chemicals are applied, how their absorption will be affected, is there any reference please?
We are detecting Indole acetic acid (IAA) producing actinobacteria according to Bano and Musarrat (2003) method.
The summary of the method is:-
Inoculation of the isolates in LB medium (supplemented with 0.5% glucose and 500 μg/mL tryptophan) -----> Incubation at 28 ◦C for 48 h -----> Centrifugation of the cultures at 10000 rpm for 15 min ----> 2 mL of the supernatant were transferred to a fresh tube to which 100 μL of 10 mM ortho-phosphoric acid and 4 mL of the Salkowski reagent (1 mL of 0.5 M ferrous chloride in 50 mL of 35% perchloric acid) were added ------>incubation of the mixture at room temperature for 25 min and the absorbance of pink color development read at 530 nm -----> Calculation of the IAA concentration in cultures.
Is there any method better than this one? or if any modification?
Hi all professor
would you please tell me what the cause of this problem on cabbage? I am looking forward to see your answers. Please help me thanks
Hi all dear professores
as you see all sepals have been changed to large leafs. Please notice that these symptoms just have seen on 3 bushes. What is your idea about this problem?
I am trying to estimate phytate-P from soil by enzyme addition method. I consulted several papers and most of them had use malachite green for P determination. I followed the method described in Jarosch et al., 2015 and tried several time for estimating MRP from NaOH-EDTA extract of different soils, after and before enzyme incubation. But I failed to develop color in every cases. Rather I ended up with greenish precipitate inside glassware. I am unable to understand the problem, can anybody please help me?
I'm planning an experiment for this upcoming summer and I'm in need of a good supplier of severely nutrient-impoverished river sand (washed) in the USA? Does anyone knows a company that sells this kind of product??
It seems that original wild plants are more resistant to diseases and parasites that those selected and "improved" for their commercial value
I've just search for information on google but too little research about this topic.
Why is there no interest in micro-fertilization, especially when growing grain crops?
Usually, translocation factor is used to study heavy metals accumulations in plants. Is it possible to also apply this method to study macro and micronutrients translocation?
Hi all professors
would you please tell me about your experience in advicing fertilizer which contains tiosulphate calsium and tiosulphate potassium.
What are the advantages of using Tiosulphate calsium and Tiosulphate potassium?
thanks so much
Nano fertilizers have a tremendous surface to volume ratio. From this point of view, it should make nano particles super reactive. If it is super reactive then it should be easily fixed in soil. But inspite of these, how nano material remain available for longer time with high efficiency in soil for plant nutrition?
Hi Dear friends and figs researchers
Could you please tell me what the cause of these symptoms on fig. please help me. thanks so much.
I will be waiting for your answers.
.
I am working on boron deficiency in Indian mustard.
During screening of different mustard genotypes I found the plants did not show any symptoms of boron deficiency, for a prolonged period, when I transferred directly to 1X Hoagland's after germination.
But when I slowly increase the nutrient concentration (from 1/4th, 1/2 and then to 1X), as mentioned in Xu et al 2012, the plants started to show symptoms respective to the Boron deficiency.
So then I got these questions:
1. As we all know plant's nutrient requirement depends and vary upon their developmental stage. Is that possible that excess concentration of nutrients (1X Hoagland's immediately after germination) hindered the deficiency symptoms of Boron?
2. Moreover, I found the survival rate of the seedlings were much better when I increase the nutrient concentration from 1/4th, 1/2 and then to 1X Hoagland's. Any explanation for this?
It is an accepted practice to express the nutrients in fertilizers as percentage of nitrogen (N), phosphate (P2O5), and potash (K2O). We know that plants do not take up these nutrients in any of these forms, and this practice is being continued because of some historical reasons. In olden days, plant ash analysis was the major procedure for studying plant nutrition, and scientists, while analysing plant ash for various elements, observed that when these elements were expressed as oxides, they summed up to 100 percent indicating total analysis. Consequently, it became a practice to express various plant nutrients found in plant ash in oxide form (P2O5, K2O, CaO, MgO, etc.). Other elements that may not be present in plant ash are expressed in elemental forms only ( Examples, nitrogen ( N) and sulphur (S). This system has been accepted by the fertilizer industry to express grades of all fertilizers.
My question is: Why are we continuing this odd practice still now?. Why don’t we opt to express all the nutrients in elemental form?
Can soil analysis be used as a guide to plant nutrition rather than plant analysis?