Open AccessThe effect of nitrogen fertilizers and their tank mixtures with herbicides and fungicides on spring wheat productivity
Author(s) -
Е. Н. Ледовский,
В. Г. Доронин
Publication year - 2021
Publication title -
zernovoe hozâjstvo rossii
Language(s) - English
Resource type - Journals
eISSN - 2079-8733
pISSN - 2079-8725
DOI - 10.31367/2079-8725-2021-73-1-82-86
Subject(s) - agronomy , chernozem , loam , productivity , fungicide , plough , spring (device) , fertilizer , environmental science , human fertilization , nitrogen , biology , chemistry , soil water , mechanical engineering , organic chemistry , soil science , economics , macroeconomics , engineering
The study was carried out in 2018 and 2019 in the southern forest-steppe area of the Omsk region. The soil of the experimental plot was chernozem-meadow, medium and heavy loamy. The crop rotation was as follows: ‘black’ fallow – spring wheat – spring wheat – spring wheat – barley, the forecrop was second wheat. It was a two-factor field trial, the area of the plots was 50 and 25 m 2 , with three-fold sequence. The purpose of the current work was to estimate the effect of nitrogen fertilizer as a basic one and in the form of top dressing combined with fungicidal and herbicidal treatment on the productivity of spring wheat grain. There was identified a positive effect of the factor of nitrogen fertilization N 35 on the productivity of spring wheat grain when sown in ‘black’ fallow. In 2018 there was productivity increase on 0.43, and in 2019 it was 0.74 t/ha, or 25.1 and 39.2%, respectively, according to the control. The utilization of the mixture of herbicides and carbamide (5 kg/ha) had only a tendency to productivity increase in comparison with herbicide control. The additional top dressing of 5 and 10 kg/ha of carbamide in ‘head formation period’ increased productivity by 0.32 and 0.42 (in 2018) and 0.45 and 0.47 t/ha (in 2019). The best results were obtained from the combination ‘herbicides + carbamide (tillering) + fungicide (head formation)’, the average productivity increase was 0.60 (in 2018) and 1.83 t/ha (in 2019).