Effect of Nutrient Management Practices on Yield of Sunflower (Helianthus Annuus L.) Under Red and Lateritic Zones of West Bengal

摘要

A field experiment was conducted to study the effect of nutrient management practices on yield of sunflower (Helianthus annus L.) under red and laterite zone of West Bengal during 2013-14 at Rice Research Station, Bankura, West Bengal, India on sandyloam soil of slightly acidic in reaction (pH: 5.4). Main objective was identifying the suitable nutrient management practices for sunflower in red and laterite zone of West Bengal. This experiment was conducted in randomized complete block design (RCBD)with three replications. Sunflower cv. Hybrid (KBSH-41) was used. Spacing was 60 cm x 30 cm. Spray of borax @ 0.2 % (2g/lit. of water) to capitulum at ray floret opening stage was done to improve seed set and seed filling. 1st, 2nd, 3rd and 4* irrigations at seedling, button, flowering and seed development stages, respectively were applied. The experimental results revealed that the highest seed yield of 2106 kg ha~(-1) was recorded from treatment N_9[N_3 (N, P_O_5, K_2O @ 100, 120, 120 kg ha~(-1)) + Vermicompost @ 21 ha~(-1) + Borax spray @ 0.2 %] and it was statistically at par with that of 1950 and 1924 kg ha~(-1), respectively which were obtained from treatment N6 [N_3 (N, P_2O_5, K_2O @ 100, 120, 120 kg ha~(-1)) + FYM @ 41 ha~(-1) + Borax spray @0.2 %] and treatment N_8 [N_2, (N, P_2O_5, K_2O @ 80, 100, 100 kg ha~(-1)) + Vermicompost @ 2 t ha~(-1) + Borax spray @ 0.2 %], respectively. The lowest seed yield of 1027 kg ha~(-1) was obtained from treatment N_2 (N_1 P_2O_5, K_2O @ 60, 80, 80 kg ha~(-1)).