Efficiency of rates, methods and timing of the application of nitrogen fertilizers for maize
Национальная академия наук Беларуси

РУП "НПЦ НАН Беларуси по земледелию"

Республиканское научное дочернее унитарное предприятие
Author: G. N. Kurkina
Article code: UDC 631.84:633.15

Keywords: maize, basic application fertilizers, sowing fertilizers, nitric additional fertilizing, yield.

// Мелиорация.– 2020. – №1(91) – P 61–70

The results of the study on rates (90 and 120 kg/ha), methods (scattered and local) and timing (pre-sowing cultivation, sowing, additional fertilizing in 5–6 or 7–8 leaves) of applying nitrogen fertilizers for corn. It is established that different variants of application of urea show close to each other, the height of plants and yield of green mass of corn. The introduction of urea during sowing at a rate of 30 kg / ha a.i. leads to a decrease in field germination of corn seeds by 10.2–11.6% and as a result to a significant shortage of dry matter and grain. The highest yield of dry matter and grain, as well as the best economic indicators, are formed in the variants with 30 kg/ha of nitrogen to the basic application and 60 or 90 kg/ha in the phase of 7-8 corn leaves in a scatter way.