Impact of Micronutrients on Fruit Set and Fruit Drop of Winter Season Guava (Psidium Guajava L.) cv. Allahabad Safeda

A field experiment was carried out at the Horticultural Research Farm of the Department of Applied Plant Science (Horticulture), Babasaheb Bhimrao Ambedkar University during the Rabi season of 2012–2013. The experiment was laid out in Randomized Block Design with 9 treatments, replicated thrice and one branch was taken as a unit. Observations were recorded on growth, physical and quality characters of guava. The maximum fruit set percent (67.43) and fruit drop percent (58.71) were recorded maximum with foliar application of zinc sulphate + borax 0.6% and zinc sulphate+copper sulphate + borax 0.5%. Therefore, zinc sulphate + borax 0.6 percent and zinc sulphate + copper sulphate + borax 0.5% may be recommended to guava growers for obtaining better yield and quality during winter season crop of guava cv. Allahabad Safeda under Lucknow conditions.