Effect of land configuration on water economy, crop yield and profitable under rice Oryza stiva)-based cropping system in north-east India.
2010
Saha, R. | Ghosh, P.K.
A field experiment was conduct during the winter (rabi) season of 2006 and 2007 to evaluate the water economy and performance of different crop combinations under standard raised and sunken bed system of cultivation in mid-hills of Meghalaya, north-eastern part of India. The treatment consisted of various winter vegetables crop like tomato, (Lycopersion esculentum L. Mill.nom. cons.), potato (Solanum tuberosum L.) grown on sunken beds and gardenpea (Pisum sativum L.) and Frenchbean (Phaseolus vulgaris L.) grown in raised beds under organic mulched and without mulched condition. Periodical observations on soil moisture content and yield attributes of various crop were recorded for further analysis on water economy and profitability of cropping system. Organic mulching significantly increased the soil moisture content in all the crop combinations. The profile soil moisture content was significantly higher in rice (Oryza sativa L.)- tomato/gardena cropping system (29.3%), lowest being in rice-fallow system (22.5%). Results showed that organic mulch decreased soil temperature by 3-5 C compared to that in the plots without mulch. Among the various crop combustions, rice-tomato/gardenpea gave the highest rice equivalent yield and production efficiency (18 138 kg/ha and 77.18 kg/ha/day, respectively), followed by rice-potato/gardenpea system (16 982 kg/ha and 76.50 kg/ha/day, respectively), lowest being in rice monocropping (4 420 kg/ha/day, respectively). Highest net returns (Rs 56 730.ha) was recorded in rice-tomato/gardenpea, followed by rice-potyato gardenpea (Rs. 51 435/ha).
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