Effect of foliar application of nutrients and bio-regulators on growth, fruit set, yield and nut quality of walnut

A trial was conducted to study the influence of foliar application of nutrients and bioregulators on growth, fruit set, yield and nut quality of walnut. Maximum tree growth, viz. tree height, trunk girth and shoot extension growth was observed with urea + Paras (0.5% + 0.6 ml/l) treatment. Highest fruit set, fruit retention and nut yield was recorded under H₃BO₃ + Paras (0.1% + 0.6 ml/l) treatment whereas highest nut weight and kernel weight was observed under treatment of urea + paras (0.5% + 0.6 ml/l). The highest kernel protein and kernel oil content were recorded in the treatment with urea (0.5%).