Productivity of hybrids of corn depending on growth-promoting factors and micro-fertilizers in conditions of irrigation

Abstract

The purpose. To determine effective growth-promoting factors and micro-fertilizers in view of biological features of new hybrids of corn of different groups of maturity in conditions of irrigation of South Steppe of Ukraine and their effect on formation of grain productivity of plants. Methods. Field (for scoping yield and measuring biometrical indexes); laboratory (moisture test of soil, moisture content in grain and quality factors of grain); statistical (assessment of reliability of the gained results); calculated (for economic and energy assessments of used methods of growing). Results. Efficiency of application of micro-fertilizers and growth-promoting factors in sowings of hybrids of corn of different groups of maturity in conditions of irrigation is fixed. The most sensitive to application of micro-fertilizers and growth-promoting factors in conditions of irrigation were middle-ripening and middle-late hybrids. Conclusions. In conditions of irrigation on dark-chestnut soils of the south of Ukraine for deriving productivity of grain of corn in the range of 10 – 14 t/hectare it is necessary to apply efficient innovative growth-promoting factors and micro-fertilizers and it is expedient to grow new hybrids of corn of intensive type of middle-ripening and middle-late groups Zbruch, Kahovsky, DN Hetera, Arabat, etc.