Vol. 7, Issue 1 (2019)

Studies were carried-out at fruit research station, Department of Horticulture, JNKVV, Jabalpur during the season of 2015-16 on 5 years old orchard of mango, to evaluate the positive effect of foliar sprays of PGR’ and nutrients on flowering, fruiting, quality and physiological characteristics in Amrapali mango. Flowering parameters like panicle length, Number of panicle lets per panicle, Ratio of Hermaphrodite and male flower and Percentage of healthy and malformed panicles were increased significantly by the application of NAA 50 ppm + KNO₃ 2%. Higher number of fruits at initial stage and more fruit retention percentage at harvest stage were recorded with GA₃ 30 ppm + KNO₃ 2%, followed by GA3 20 ppm + KNO₃ 2% treatment. Quality parameters such as fruit weight (g), fruit size, peel weight and Fruit yield (kg/ tree) were also significantly improved by the application of GA3 30 ppm + KNO₃ 2%. Under the treatment T6 (NAA 50 ppm + KNO3 2%) was recorded significantly maximum pulp weight which were at par with T2. However, it was noted minimum in control (T₁₇) and reverse trend was noted in case of stone weight. Significantly minimum stone weight was recorded in treatment T6 (NAA 50 ppm + KNO3 2%).

Physiological parameters such as Energy interception (cal.cm-2min-1), PAR interception (μmol m-2sec-1) were significantly improved by the application of GA3 30 ppm + KNO3 2%. Although, reverse trend was noted in case of light transmission ratio. Foliar feeding of growth regulator and nutrients directly to the metabolite sites considerably enhanced fruit yield and other physiological characters.