Rice grassy stunt (GSV) at high altitudes
1984
Mariappan, V. | Ranganathan, T.B. (Tamil Nadu Agricultural Univ., Coimbatore (India))
Rice with symptoms similar to those of GSV was found in the Dugalur Valley of the Nilgiris Mountains of Tamil Nadu, where rice is grown on about 3,500 ha. The valley is isolated, and surrounded by 2,000-m-high, densely forested hills. BPH are present in the valley. Disease symptoms were severe stunting and profuse tillering with narrow erect leaves, but the plants were green because of high soil N in the valley. Infection was less than 3% in Jagannath, IR20 and local varieties on the horticultural farm in Devala
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