Models of Winter Wheat Yield Based on Calcareous Chernozem Fertility Parameters

Abstract

The use of polyelement diagnostics and regression analysis for predicting the yield of winter wheat at different stages of vegetation is considered. It has been established that the prediction and integrated assessment of grain yield and quality should be performed with consideration for the balance of macro-and micronutrients in the grain and the aboveground biomass of plants. Possibility of predicting the contents of macro-and micronutrients in wheat grain from the chemical composition of plants at the shooting stage has been revealed. Scientifically based recommendations are presented for managing the grain yield and quality of winter wheat.

Efficiency of application of compost of liquid poultry manure under sunflower in southern chernozem

“…At the same time the dose of application of organic fertilizers is 100-130 kg/ha, which is much lower than necessary to maintain the balance of nutrients. It leads to a decrease in soil fertility, the amount of humus, as well as to a decrease in reserves of phosphorus and potassium [3].…”