Response of Rice Genotypes to Boron Fertilization and Screening of Efficient Rice Varieties under Boron Stress in Inceptisol

A pot culture experiment was conducted on Karaikal soil series (Vertic Ustropept) to study the response of rice genotypes boron addition and screening efficient using stress indices. Ten were tested at two (0, 2 mg kg-1) level boron. The result revealed that highest grain yield (88.40 g pot-1) straw (114.7 pot-1), maximum uptake (2192.3 µg (3291.9 recorded with application 2.0 kg-1. Amongst genotypes, ADT 50 significantly yield, use efficiency compared other @ From results, we observed there are significant differences among fertilization no application. Further, based tolerance index (STI), under (Ys) adequate condition (Yp) categorized into Group – uniform superiority non 50, ADT43 53 high STI > 1.0; B - perform favorably only 46, 52,ADT 51, 40 37 0.7 C genotype relatively higher environment ; D poorly in both non-stress 38 39 low < 0.70.