Trąšų su jūros dumbliais poveikis vasariniams rapsams

Abstract

The purposes of this job to assessment the fertilizer rates and count forms effectiveness of seaweed fertilizer on summer rapeseed. It was made precision field trials at limnoglacial loam on carbonaceous till, deeper in clay loam, Aleksandro Stulginskio University in 2011 to assess the impact of seaweed fertilizers on yield of summer rapeseed. The ber. yielding (2.94 t ha"1) produced of summer rapeseed fertilized with Eurofertil 37 Physio at stage of main fertilizer time, at stage of sprouting fertilized with ammonium nitrate, at stage of 4-6 leaf fertilized with Fertiactyl Starter and at stage of stem growth time fertilized with Sulfamo 30. On purpose to reach for more fat content of seeds the summer rapeseec is better to fertilize with Fertileader Gold at stage of bud formation than to fertilize with Fertiactyl Starter at stage of 4- 6 leaf. The protein content of summer rapeseeds seeds to different fertilizers growths slightly. The used forms effectiveness on glucosinolate content of seeds has not been established.