ADT39, a new rice variety for Tamil Nadu [India]
1988
Parthasarathy, P. | Vaithilingam, R. | Manuel, W.W. | Vairavan, S. | Nadarajan, N. | Sivasubramanian, V. | Chelliah, S. (Tamil Nadu Rice Research Inst., Aduthurai (India))
Good grain yields were recorded in research station, All India Coordinated Rice Improvement Project (AICRIP), and adaptive trials and in crop cutting experiments in farmers' fields. Yield increase was 14-40% compared with IR20 and 13-15% compared with Jaya. In AICRIP trials, it was superior to Jaya at six locations during the wet season and two locations during the dry season. ADT 39 is resistant to bacterial blight, blast, neck blast, brown spot, sheath blight, and grain discoloration; moderately resistant to green leafhopper; and susceptible to sheath rot, leaffolder, and brown planthopper. (However, BPH [brown planthopper] is not a problem in the season in which it is grown). ADT39 has 65% milling recovery and 10.1% protein. The fine-grained rice cooks well and is highly preferred in South India. Farmers of Tamil Nadu have named it "Idly rice" and "tiffin rice". The Agricultural Department estimated its natural spread, before release, in 40,000 ha in Thanjavur district. ADT39 is already proven well suited to late planting (Oct-Nov) in Thanjavur district. Because it matures earlier than IR20, it should escape water scarcity during ripening, opening room for timely sowing of black gram, green gram, and cotton in the rice fallow season.
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