THE EFFECT OF THE TYPES OF FOLIAR FEEDING ON FRESH AND DRY WINTER RAPE MASS (BRASSICA NAPUS L.)

The field experiment was carried out in 2016-2019 at the Agricultural Experimental Station -Zawady belonging to the University of Natural Sciences and Humanities in Siedlce.The experiment was established in a random split-plot system in three repetitions.The surface of one plot was 21 m -2 .The examined factors were I -three varieties of winter rape: Monolit (population variety), PX115 (hybrid variety restored with a semi-dwarf growth type), PT248 (hybrid variety restored with a traditional growth type).II -four types of foliar feeding: 1. control object (without foliar feeding and biostimulator were sprayed with distilled water), 2. biostimulator Aminoplant, 3. Foliar fertilizer Siarkomag + foliar fertilizer Bormax, 4. Foliar fertilizer Siarkomag + foliar fertilizer Bormax + biostimulator Aminoplant.The aim of the study was to determine the effect of foliar feeding on the growth of fresh and dry mass of plants (leaf rosette, root) of three winter rape varieties.On the basis of the conducted research, it was found that autumn foliar feeding of plants significantly increased the fresh and dry weight of the rosette and the root system in comparison to the control variant.The highest growth of plant weight and root system was recorded on object 4, which proves that the biostimulator applied with foliar fertilizers had a positive effect on the uptake and accumulation of micro and macro-elements provided with foliar fertilizers.The Monolit population variety was distinguished by the largest green and dry mass of the rosette and root system.In the growing season 2018-2019 characterized by very hot and dry autumn, the largest fresh and dry mass of plants (rosettes and root system) was found.