Influence of macro-, micro-fertilizers and growth regulators on production processes and yield of spring wheat on sod-podzolic light-loamy soil

Abstract

The positive effect of complex fertilizers, microfertilizers, growth regulators and complex microfertilizers with growth regulators on the dynamics of biomass accumulation, leaf area, photosynthetic activity and yield of spring wheat has been established. The maximum leaf surface area was noted in the variant with the use of MicroStim-Copper L against the background of N_60+30+30P₇₀P₁₂₀ – 50,1 thousand m²/ha, and the greatest accumulation of dry matter (1488,3 and 1495,2 g/100 plants) was in variants with the introduction of MicroStim-Copper L and Nutrivant plus against the background of N_60+30+30P₇₀P₁₂₀. The values of photosynthetic potential and net productivity were 0,66–0,64 million m2 day/ha and 2,7–2,9 g/m² day.

Foliar feeding of wheat with micronutrient fertilizers Adob Copper and MicroStim- Copper L against the background of N₆₀₊₃₀P₆₀P₉₀ increased grain yield by 4,3 and 5,8 c/ha of grain. Treatment of crops with complex fertilizers Nutrivant plus, Crystalon and Adobe Profit in the tillering phase against the background of N₆₀₊₃₀P₆₀P₉₀ gave an increase in the yield of wheat grain of the Bombona variety 6,8, 4,4 and 5,3 c/ha. The use of a new complex fertilizer for spring grain crops NPP grade 16-12-20 with 0,20 % Cu and 0,10 % Mn compared to the variant where used urea, ammoniated superphosphate and potassium chloride were used in an equivalent dose (N₆₀₊₃₀P₆₀P₉₀), increased wheat yield by 8,4 c/ha.

The highest yield of spring wheat grain (69,7 and 70,3 c/ha) was obtained with foliar feeding with MicroStim-Copper L micronutrient fertilizer and Nutrivant plus complex fertilizer against the background of N_60+30+30P₇₀P₁₂₀.