Vasarinių rapsų pasėlių optimizavimas naudojant skystas bioorganines trąšas „Raskila“

Abstract

Field experiments were conducted on a Bathihypogleyi-Calc(ar)ic Luvisol at the Experimental Station of the Aleksandras Stulginskis University in 2014. Treatment of investigations: 1) Contol (F) – background NPK fertilization; 2) F + Raskila 2 l ha-1 sprayed 1 time; 3) F + Raskila 2 l ha-1 sprayed 2 times; 4) F + Raskila 2 l ha-1 sprayed 3 times; 5) F + Raskila 3 l ha-1 sprayed 1 time; 6) F + Raskila 3 l ha-1 sprayed 2 times; 7) F + Raskila 3 l ha-1 sprayed 3 times. The reliably largest spring rapeseed yield has been obtained when the plants sprayed with biological fertilizers Raskila (3 l ha-1) three times. In this fertilization variant has been obtained 3.63 t ha-1 rapeseed yield – 27.37 per cent. significantly higher compared with the control treatment. Fertilization of rape crop, in comparison with crop without fertilization, increased the percentage of crude fats, crude proteins, crude fiber and dry matter. The biological fertilizers Raskila (3 l ha-1 norm – sprayed 2 and 3 times) had a material impact on rapeseed qualitative indicators: crude proteins established – 20.13 and 20.17 per cent., crude fats – respectively 41.86 and 41.90 per cent., crude fiber – respectively 27.33 and 27.56 per cent., dry matter – 91.18 and 91.25 per cent.