PHOTOSYNTHETIC PRODUCTIVITY OF OATS (AVENA NUDA) PLANTS DEPENDING MINERAL FERTILIZERS DOZES

Abstract

The studies influence of conditions of mineral nutrition on photosynthetic productivity of plants oats ( Avena nuda ) are resulted in this paper at cultivation on Podzoluvesol loamy sand soil. The system of fertilizer N_60+30+20Р₄₀К₉₀ + Cu + Mn + fungicide provided the maximum area in experience of a sheet surface - 51,57 thousand in m²/ha is formed to a phase sheet last, and value of photosynthetic potential in this phase reaches 0,58 million in m²/ha a day has been found. Active escalating of a sheet surface, and also its longer preservation in a functional condition (33,28 thousand in m²/ha to a phase tasseling of panicle) has ensured productivity of grain 48,2 c/ha. Application of mineral fertilizers promoted more intensive accumulation of a biomass on all phases of development and led to increase in an indicator of pure efficiency of photosynthesis on the variants with fertilizers.