A field experiment was conducted to find out the differential response of potassium in three rice varieties. The varieties differed in their parental composition. "Kannaki' which has 'IR 8" as female parent showed highest response in terms of increased productive tillers, panicle length, total number of grains per panicle, and 1000-grain weight which, in turn produced highest yield of grain. The Grain-Straw ratio and Harvest index also found to be maximum in 'Kannaki'. The increased response of "Kannaki' to applied potassium is attributed to its female parent 'IR 8'..
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Tamil Nadu Agricultural University
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Tamil Nadu, India.
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Agricultural Students Union
Tamil Nadu Agricultural University
Coimbatore - 641 003
Tamil Nadu, India.
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