I have simple question how N storage in plant fluctuate? what are the most critical factors responsible for change in N storage in plant?
I hope this link will help you
Chapter Crop, environmental and management factors affecting nitroge...
Climatic factor such temperature and vapur pressure and moisture status are also taken into consideration which can directly and indirectly influence the above aspects of nitrogen by changing the physiology of plants. Various studies are available online.
Som Pal Singh Kindly suggest some links for available studies regarding this issues
N- mineralized from SOM and crop residues makes a large contribution to crop plants N-uptake. Management strategies such as stubble retention, tillage , fertilizer application, green manuring, crop and variety selection can help manipulate microbial communities involved in nitrogen mineralization from organic matter and crop residues and influence fertilizer N use efficiency. Microbial communities are also involved in release of NO3-N from SOM. Free living nitrogen fixation can make agronomically important contribution available N-pool
Nitrogen (N) is the most abundant element in the atmosphere and is usually the most limiting crop nutrient. Nitrogen cycles through the soil in various processes and forms. Some processes are necessary to convert N into forms that plants can use. Some processes can lead to N losses such as leaching or volatilization. Nitrogen is added to soil naturally from N fixation by soil bacteria and legumes and through atmospheric deposition in rainfall. Additional N is typically supplied to the crop by fertilizers, manure, or other organic materials. Soil nitrate-N is an excellent indicator of N-cycling in soils, whether carryover nitrogen was used by the previous crop and whether additional nitrogen is needed.
I agree with Sunita, the soil environment is one of the key factors to N availability to crops including agronomic practices being implemented at farm level.....
Dear Wajid Mahboob I agree with Som Pal Singh JI, apart of this the Nitrogen stored in the plant is mobilized or say remobilized if there is a shortage of supply in order to perform the metabolic activity, therefore, availability of N from the soil is also going play important role in storing the N in the plant.
Thanx and Regard
Both biotic and abiotic stresses affects the storage of N in plants. This is as a result of the fact that more N is used in defense under stressed conditions.
We should not also forget biotic factor like leave size and density.
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