Kovalenko NO
National University of Life and Environmental Sciences of Ukraine, Kyiv, 03041, UkrainePublications
-
Research Article
Regularities of sowing alfalfa productivity formation while using different types of nitrogen fertilizers in cultivation technology
Author(s): Kokovikhin SV, Kovalenko VP, Slepchenko AA, Tonkha OL, Kovalenko NO, Butenko AO* and Ushkarenko VO
The provision of alfalfa with the nutrients throughout the whole growing period is an important factor in influencing the yield. We researched the content of mineral nitrogen in the typical black soil and the productivity of green mass of sowing alfalfa. As a result of research, we have found that the use of CAM in comparison with ammonium nitre in the norm of 90 kg/ha increased the total nitrogen content in the green mass of alfalfa by 0.17%. The mineral compounds of nitrogen in the podzolized black soil were 36%-87% higher compared with the variant without fertilizers. Increasing the rate of phosphorus from 60 to 90 kg/ha increased the content of total phosphorus in sowing alfalfa by 0.09%-0.11% and potassium by 0.19%-0.23% respectively. When using the CAM rate N180 on the P60K60 background the highest yield of green alfalfa (43.5 t/ha) was obtained, the differ.. Read More»
DOI: 10.5281/zenodo.4453889