Indian Journal of Agricultural Research

  • Chief EditorV. Geethalakshmi

  • Print ISSN 0367-8245

  • Online ISSN 0976-058X

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Indian Journal of Agricultural Research, volume 54 issue 1 (february 2020) : 71-76

Evaluation of Rice (Oryza Sativa) Varieties Suitable for Organic Farming

K. Vasantha Kumari, P.M. Shanmugam
1Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore-641 003, Tamil Nadu, India.
Cite article:- Kumari Vasantha K., Shanmugam P.M. (2019). Evaluation of Rice (Oryza Sativa) Varieties Suitable for Organic Farming. Indian Journal of Agricultural Research. 54(1): 71-76. doi: 10.18805/IJARe.A-5291.
A field experiment was conducted to evaluate the rice varieties suitable for organic farming. The experiment was carried out in the rabi season of 2013-14 at Tamil Nadu Agricultural University, Coimbatore to study the yield, quality and economics of different rice varieties. The experiment was laid out in a RBD replicated thrice. The treatments consisted of 12 rice varieties viz., Bhavani, White ponni, Mappillai samba, Kitchili samba, IR 20, CO 43, CO(R) 48, CO(R) 51, CB 05022, KDML 105, Red kavuni and Jeeraga samba. The culture CB 05022 produced significantly higher grain yield of 4877 kg ha-1 and registered a yield increase ranging from 32 to 82 per cent over the other varieties under evaluation. With regard to quality parameters, grains of the culture CB 05022 was medium slender based on the kernel length and L/B ratio. The highest net return of ` 40,015 ha-1 with B:C ratio of 2.28 was realised under the rice culture CB 05022 followed by Kitchili samba (net return: ` 32,423 ha-1; B:C ratio: 2.04) and Jeeraga samba (net return: ` 31,431 ha-1; B:C ratio: 2.01).  It is inferred that varieties and cultures differ widely among themselves when grown under organic farming. In terms of grain yield, quality and economics, the culture CB 05022 performed better under the organic production system. 
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