The efficiency of humic growth stimulators in pre-sowing seed treatment and foliar additional fertilizing of sown areas of grain and industrial crops
¹Poltava State Agrarian Academy, Faculty of Agro-Technology and Ecology, Department of Selection, Seed Growing and Genetics, 1/3 Skovorody street, UA36003 Poltava, Ukraine
²The Institute of Pig-Breeding and Agro-Industrial Production of the National Academy of Agrarian Sciences of Ukraine, 1 Shvedska mohyla street, UA36013 Poltava, Ukraine
³Poltava M.I. Vavilova State Agricultural Experimental Station of the Institute of Pig-Breeding and Agro-Industrial Production of the National Academy of Agrarian Sciences of Ukraine, 86 Shvedska mohyla street, UA36014 Poltava, Ukraine
⁴University of Opole, Faculty of Natural Sciences and Technology, Institute of Technical Sciences, Dmowskiego street 7–9, PL45–759 Opole, Poland
The aim of the research was to establish the effectiveness of preparations, made on the basis of humic and fulvic acids on the yields of crops in case of different methods and amounts used. The experiments were held with varieties and hybrids of winter wheat, soya, corn, and sunflower. Based on the obtained results of investigation during the period of 2015–2017, the positive impact of foliar additional fertilizing with 4R Foliar Concentrate growth stimulator on the basis of humic and fulvic acids on the formation of productivity of the main crops sown areas was established.
Proceeding from the results of the research, the using of growth stimulators based on humic and fulvic acids, which contain high concentrations of these substances, can be recommended as an expedient and efficient measure of raising the productivity and improving qualitative indicators of corn, sunflower, soya, and winter wheat yields.