Abstract
The results of studies carried out in 2016 – 2018 in the 2-factor field experiment on sod - medium-podzolic light loamy soil in JSC "Kalininskoye" Kalinin district of the Tver region, to study the possibility of obtaining programmed maize yields with different efficiency of sowing KPD FAR. The background of mineral nutrition was created by the introduction of litter manure of cattle. Studied hybrids Cascade SV 195 (control), Angela, LH 30189, Voronezh SV 160, 180 Spring ST. It is revealed that the agrometeorological conditions of the region allow to form the programmed yields of green mass of corn at creation of the corresponding background of fertilizer. At the same time, they increase the powerful photosynthetic potential of sowing. The maximum FRR (4663 thousand m2хday/ha) formed hybrid LH 30189 on the background of mineral nutrition with the efficiency of the KPD FAR is 3.5 %, which has generated the greatest yield of green mass of cobs in the milk – wax ripeness, on average, for 3 years he has 93.2 t/ha.
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