Effect of nutrients on growth and yield attributes of rice in two different methods of cultivation under <em>Terai</em> situation of West Bengal

Abstract

An experiment was carried out at the agricultural farm of Uttar Banga Krishi Viswavidyalaya, Pundibari, Cooch Behar during the year 2012-2013 and 2013-2014 to study the effect of zinc on growth and yield attributes of Boro rice, (Cv. Annoda MW-10) at Conventional and SRI (System of Rice intensification) methods. It was observed that grain and straw yield was higher at the SRI method compared to that at the conventional one. The application of NPK @ 75 per cent RDF (80 : 40 : 40 kg/ha), biofertilizers (150 g per sq.mt) and 25 kg ZnSO4 per ha resulted significant increase in plant height (82.76 cm), number of tillers per hill (25.6), panicle length (26 cm), 1000 grain weight (29.06 g), straw yield (16.97 t ha-1) and yield of rice (10.07 t ha-1) under SRI method whereas, the same treatment combination gave 9.64 t/ha grain yield and 16.26 t ha-1 straw yield of rice under the conventional method of cultivation. It could be concluded that application of zinc @ 25 kg/ha in addition to the recommended dose of N, P and K along with biofertilizer may be applied for increasing the grain yield of rice.