Maximizing system productivity and profitability through crop intensification and diversification with rice (Oryza sativa)-based cropping systems in acid soils of Assam (original) (raw)

Indian Journal of Agronomy, 2016

Abstract

A field experiment was conducted for 6 consecutive years during 2008–09 to 2013–14, at Jorhat, Assam, to study the soil fertility, system productivity and profitability through crop intensification and diversification with rice (Oryza sativa L.)-based cropping system under irrigated medium land acid soil situation of Assam. From the pool analysis of data, it was observed that rice-equivalent yield, system productivity and nutrient-use productivity were found to be the highest in winter rice-cabbage [Brassica oleracea (L.) greengram [Vigna radiata (L.) Wilczek] (REY 17.72 t/ha) sequence, followed by winter rice-chilli (Capsicum annuum L.)-blackgram [Vigna mungo (L.) Hepper] sequence (REY 14.37 t/ha) among the 8 cropping sequences under study. There were improvements in post harvest physico-chemical properties of soil in different rice-based cropping systems. Significant variation with 34.0, 36.9 and 65.5% increase in available N, P2O5 and K2O, respectively, were recorded in winter rice-radish (Raphanus sativus L.)-French bean-greengram sequences over initial status of soil. Total uptake of nutrients were also the highest of winter rice-radish-French bean-greengram sequence followed by winter rice-knolkhol [Brassica oleracea L. convar. acephala (L.) Alef. Var. gongylodes L.]-French bean-cowpea [Vigna unguiculata (L.) Walp.] (fodder) sequence. Economic analysis of the systems revealed that the highest gross returns (210.8 × 103/ha), net returns (145.1 × 103/ha) and benefit: cost ratio (2.21) were recorded in winter rice-cabbage-greengram sequence under irrigated medium land situation of Assam.

ARUNDHATI BORA hasn't uploaded this paper.

Let ARUNDHATI know you want this paper to be uploaded.

Ask for this paper to be uploaded.