MICROELEMENTS IN SOILS OF ULYANOVSK REGION AND EFFICIENCY OF MICROELEMENT-CONTAINING FERTILIZERS IN CULTIVATION OF WINTER WHEAT
The object of the study was the soil of Ulyanovsk region of different granulometric composition, winter wheat, as well as microelement containing fertilizers: Micromac and Strada N. The work is based on the results of the monitoring of microelements (Zn, Mn, Cu) in soils of Ulyanovsk region and laboratory studies that are reliable, as proven by statistical data processing. Laboratory analyses were carried out according to the relevant state Standards in accredited laboratories of FSBI “SAS “Ulyanovsk" (№ ROSS RU 150.251). Digital material was processed by variance analysis. It was found that 98,6 % of the arable land of Ulyanovsk region are provided with zinc in a low degree; available manganese 17,6 % in low, 67,7 - average and 14,7 % - high degree; 98,6 % of arable soils are provided by the copper in the middle (20,2 %) and high (78,4 %) degree. The positive effect of trace element-containing fertilizers on yield and quality of winter wheat has been proven. Presowing cultivation of seeds Micromac significantly increased the grain yield of winter wheat in the 3-year average by 0,20 t/ha, the application at the background N30P30K30 - by 0,37 t/ha, manure by 0,56 t/ha (control 3,81 t/ha). Strada N yielded Micromac by influence on the formation of the crop.