THE EFFECT OF DROUGHT ON THE NITRATE CONTENT IN THE HERBAGE OF THE FIRST YEAR OF LIFE OF PERENNIAL PASTURE GRASS MIXTURES
THE EFFECT OF DROUGHT ON THE NITRATE CONTENT IN THE HERBAGE OF THE FIRST YEAR OF LIFE OF PERENNIAL PASTURE GRASS MIXTURES
DOI:
https://doi.org/10.52269/22266070_2022_4_92Keywords:
grass mixture, nitrates, nitrites, precipitation, pastures, perennial grassesAbstract
The aim of the study is to determine the effect of drought on the nitrate content in the herbage of the first year of life of perennial pasture grass mixtures. During the research, the methods of field experiments generally accepted in agronomy were used, laboratory studies were conducted in an accredited laboratory of AgroComplexExpert LLP (village of Zhaksy) according to established methods and standards on modern equipment; the object of research is the herbage of the first year of life of perennial herb mixtures. The article presents an analysis of the results of laboratory studies on the content of nitrates in the herbage of the first year of life of perennial grass mixtures, depending on the hydrothermal conditions of 2021. A direct relationship between drought and nitrate content in grass mixtures has been determined. In conditions of drought, the nitrate content in feed increased due to a sharp decrease in the activity of nitrogen metabolism enzymes - nitrate reductase and nitrite reductase. Thus, the studied long-term herbal mixtures of the first year of life showed a high content of nitrates from 97.7 to 481.2 mg/kg.
