Abstract
The effect of the combined application of dung and nitrification inhibitor Entec FL DMPP on the loss of ammonium nitrogen from meadow chernozem soil (corresponding to Gleyic Chernozem in WRB) under the conditions of rice cultivation in the Kuban was studied. On the rice irrigation system, a field experiment was performed with autumn and spring incorporation of dung at a rate of 30 t/ha, both separately and with the addition of a nitrification inhibitor against the background of mineral fertilizers. It was found that the inclusion of a nitrification inhibitor in the dung contributed to a decrease in nitrogen losses by 6.7-15.0% during their incorporation in autumn and by 10.8-18.1% in spring, occurring as a result of denitrification and leaching of nitrates, and optimum conditions of nitrogen nutrition for rice plants. A less pronounced effect of the nitrification inhibitor was noted during its autumn incorporation with dung, which is associated with a lower air temperature in autumn and a longer period from fertilization to rice sowing.
Highlights
The Krasnodar Territory is the main rice-growing region in the Russian Federation, where the annual area under this crop reaches 120-130 th ha
One of the ways of its preservation and reproduction, optimization of the regimes of organic matter and the conditions of mineral nutrition of rice plants is the inclusion of liquid manure in the fertilization system, which will allow the most complete use of animal excrement and create conditions for their utilization
In connection with the above, the research was aimed to study the effect of the combined application of dung and nitrification inhibitor Entec FL DMPP on nitrogen losses from meadow chernozem soil in the conditions of rice cultivation in the Kuban
Summary
The Krasnodar Territory is the main rice-growing region in the Russian Federation, where the annual area under this crop reaches 120-130 th ha. One of the ways of its preservation and reproduction, optimization of the regimes of organic matter and the conditions of mineral nutrition of rice plants is the inclusion of liquid manure in the fertilization system, which will allow the most complete use of animal excrement and create conditions for their utilization. In connection with the above, the research was aimed to study the effect of the combined application of dung and nitrification inhibitor Entec FL DMPP on nitrogen losses from meadow chernozem soil in the conditions of rice cultivation in the Kuban
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