|| Checking for direct PDF access through Ovid
Meteorological conditions during the period of plant vegetation make the greatest contribution to the formation of the plant nitrate pool. Nitrate nitrogen is accumulated at high concentrations during sunless, cold years. The weather conditions of the last five to ten days of plant vegetation determine nitrate accumulation. The meteorological conditions during the entire period of vegetation determine the increase in the content of nitrates due to nitrogen fertilizers. The effect of meteorological conditions is especially pronounced in low fertility soils and upon introduction of high doses of nitrogen fertilizers. The reaction of plants to unfavorable meteorological conditions greatly varies with reference to their biological and genotypical specificity.