Response of micro-nutrients on yield, fruit quality and nutrient status of mango cv. Dashehari

Abstract

A field experiment was conducted during 2016–2020 to assess the response of micro-nutrients on 16 years old uniform trees of mango cv. Dashehari. Long term experimental results indicated that maximum mean flowering intensity (55.88%) and yield efficiency (0.52 kg/m3) were recorded in T6 (RDF + 100g Zinc Sulphate + 50g Copper Sulphate + 50 g Borax- soil application in basin after harvest + foliar spray of 0.2% zinc sulphate +0.1% Boric acid -2 spray just before flowering and marble stage) treatment. The highest mean number of fruits (194.79/tree), fruit weight (250.15 g), fruit size (11.92 cm x 6.30 cm), and fruit yield (15.35 t/ha) and soil nutrient contents namely zinc (0.65 mg/kg), copper (0.54 mg/kg), manganese (3.92 mg/kg), iron (5.35 mg/kg) and boron (0.56 mg/kg) were noticed in treatment T7 (RDF + 100g Zinc sulphate + 50g Copper sulphate + 50 g Borax through soil application in basin after harvest + foliar spray of 0.2% Zinc sulphate + 0.1% copper sulphate + 0.1% Boric acid through 2 sprays just before flowering and marble stage). Similarly, the foliar contents of zinc (22.94 ppm), manganese (248.23 ppm) and boron (34.21 ppm) were also recorded maximum in treatment T7 in mango cultivar Dashehari.