Sėjomainų poveikio vasarinių kviečių veislių produktyvumui ir sėklų kokybės rodikliams tyrimai Vilmos Žliobienės ūkyje

Abstract

Research was carried out in 2013 at Vilmos Žliobienės farm in the Antušavos village in the Kėdainių area. The soil is endohypogleyic cambisol (RDg4-k2) at installation site of the experiment. According to the texture it is dominating light loam on the farm. The test fields before sowing fertilized NPK fertilizer ratio 8:19:29:3S spreading the 350 kg ha-1 of fertilizer. When spring wheat have reached the BBCH 30-32 stage of development, they were additionally fertilized with ammonium nitrate (N34) 300 kg ha-1. It has been investigated for two spring wheat varieties: ‘Triso’ and ‘Hamlet’ when sowing them under different forecrops: spring barley spring oilseed rape. After the experiment was determined grain yield, 1000 grain weight and other elements of productivity. Essentially the highest grain yield (5.9 t ha-1) and 1000 grain weight (43.84 g) were obtained in the fields of ‘Hamle’ variety, which were sown after spring oilseed rape. Grain yield increased substantially 0.9 t ha-1 in this forecrop compared to fields of ‘Triso’ variety, which were sown after spring oilseed rape. Weight of 1000 grains increased from 6.01 to 6.69 grams compared to tested ‘Triso’ variety in the influence of both forecrops. Reliably largest number of productive tillers number (432.8 units. m-2) and the average number of grains per ear (34.8 pc) was the variety of ‘Triso’ compared to the variety of ‘Hamlet’, which was investigated in the same influence of forecrop. But a variety of properties and weight of 1,000 grain had a greater impact on grain yield and substantially increased varieties of ‘Hamlet’ yield