Crop intensification for sustainable crop productivity and soil fertility under favorable rainfed lowlands

Ghosh, A. (2006) Crop intensification for sustainable crop productivity and soil fertility under favorable rainfed lowlands. International Rice Research Notes, 31 (2). pp. 45-46.

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An on-farm study from 2002 to 2004 explored the feasibility of accommodating a preceding crop, jute (Corchorus capsularis cv. Sonali and Corchorus olitorius cv. Subala) and a succeeding crop green gram (Phaseolus radiatus [Vigna radiata]) in sequence with rice (Oryza sativa) in farmers' fields in Orissa, India. Jute, rice and green gram performed well. The improved jute cultivars consistently produced higher fibre (mean=2.31-2.55 t/ha) than the local cultivar (1.22 t/ha). The grain yields of all improved rice cultivars remained consistently higher (mean=3.32-3.55 t/ha) than that of the local cultivar (1.8 t/ha). Subala and Sonali recorded higher net returns (Rs 15 752/ha and Rs 11 550/ha) than did the local cultivar (Rs 2268/ha). The net returns of rice cultivars Gayatri and Durga were also higher than that of the local cultivar. The benefit-cost ratio of improved varieties was also higher than that of local cultivars. Considering the rice equivalent yield of jute (5.4 t/ha) and green gram (3.3 t/ha), rice productivity could be estimated at 12.2 t/ha, much more than that achieved with monocropping (1.8 t/ha) and conventional jute-rice system (4.2 t/ha). At the end of the first year, available soil N and P did not change much but soil K improved appreciably. At the end of the second year, soil N increased more than P and K. After the third year, there was noticeable improvement in NPK status, 220.2 kg/ha, 27.5 kg/ha and 197.1 kg/ha, respectively. Available soil N, P and K were enhanced by 17.6%, 15.4% and 14.1%, respectively

Item Type: Article
Author Affiliation: Central Rice Research Institute, Cuttack 753 006, Orissa, India
Subjects: Plant Production
Crop Improvement > Genetics/Genomics
Crop Improvement > Plant Breeding
Divisions: Other Crops
Depositing User: Ms K Syamalamba
Date Deposited: 19 Sep 2011 09:58
Last Modified: 19 Sep 2011 09:58
Official URL:

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