Effect of Plant Growth Regulators on Stooling in Walnuts

Walnuts grown in the State of Jammu & Kashmir are of seedling origin and there is yet no technique to be commercialized for vegetative propagation of the crop. Stooling with the application of plant growth regulators has been found successful in walnuts. In 27 treatment combinations of three levels i.e. 0, ppm, 5,000 ppm and 10,000 ppm each of IAA, IBA and NAA were applied and 14 treatment combinations gave positive results, yet three treatment combinations i.e. 5,000 ppm IAA + 10,000 ppm IBA + 5,000 ppm NAA and 0, ppm IAA + 10,000 ppm IBA + 5,000 ppm NAA and 10,000 ppm IAA + 10,000 ppm IBA + 5,000 ppm NAA have given the maximum rooting with a greater number and length of primary, secondary and tertiary roots. The establishment of stools in all the 14 treatments was found cent per cent. The present investigation has therefore enabled to screen the effective treatments and perfect a technique for stooling in walnuts.