PHYSIOLOGICAL SUBSTANTIATION OF FOLIAR FERTILIZATION FOR OPTIMIZING THE NUTRITION OF GRAIN LEGUMES IN PLANT ONTOGENY (REVIEW)
2018
Novikova, N.E.
In the review, based on the data available in the scientific literature and the author's own research, the physiological aspects of optimizing the nutrition of grain legumes in plant ontogeny by means of foliar application of fertilizers are discussed. Current data on the relationship between autotrophic and symbiotrophic nutrition, depending on the content of available nitrogen in the soil, the energy costs of assimilating molecular nitrogen and nitrates are considered. The features of donor-acceptor relations between organs in modern varieties that affect the dynamics of assimilation of nutrients in plant ontogeny are analyzed. The use of foliar top- dressing during the pods formation, when the symbiotic assimilation of nitrogen falls, makes it possible to optimally combine symbiotrophic and autotrophic nutrition with nitrogen, contributes to an increase in the yield of legumes, reduces the risks of significant yield losses under conditions that inhibit the formation of nodules.
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