AGRICULTURAL TECHNIQUES AND BIOCHEMICAL COMPOSITION OF CORN

Abstract

The article presents the research results of the influence of foliar treatment with solutions of complex fertilizers with microelements in chelated form (Azosol 36 Extra and Aquarin 5) on the biochemical composition and feeding value of biomass in early-season and middle-early corn hybrids at different levels of root nutrition. It was found that the content of crude protein was more influenced by mineral fertilizers: the content of crude protein in the phytomass of early-season hybrid corn increased by an average of 1.65 %, and the middle-early – by 1.76 %. A positive effect on the crude protein accumulation was provided by the treatment of crops with fertilizers with microelements in the five-leaf phase of corn and binary application. When treating crops with Aquarin 5 fertilizer, there was a decrease of crude fibre in the phytomass; the double crop spraying was more effective. Foliar treatment with the complex fertilizers with microelements contributed to an increase in the crude fat content by 0.10-0.34 %. No specific pattern was found, depending on the type of microfertilizers, on the effect on the biomass ash-content and the nitrogen-free extractive substances (NFE) content. Against the background of natural soil fertility, a greater collection of digestible protein was obtained with a double application of microelement fertilizers, and against the improved agricultural background – with the treatment of crop in the five-leaf phase of corn. Against both backgrounds of mineral nutrition, foliar treatment with Azosol 36 Extra contributed to obtaining a green mass better provided with digestible protein; and the advantage of treatment with complex fertilizers in the five-leaf phase and the double application was revealed. When treating crops with Azosol 36 Extra, the increase in feed units was 8.1-10.1 %.

Keywords

• corn
• hybrid
• fertilizers
• microelements
• protein
• fibre
• ash