Experimental study on the effect of weather factors, micronutrients, growth regulators, and polyamines on mango (Mangifera indica L.) yield and quality Cv. Kesar

Abstract

Mango trees were sprayed with chemicals such as putrescine (0.1 mM), spermine (0.01 mM), triacontanol (750 ppm), NAA (25 ppm), CPPU (3 ppm), salicylic acid (100 ppm), ZnSO4 (0.5%), and boron (0.5%) to investigate their effect on yield and quality. Treatment T7 (NAA 25 ppm + SA 100 ppm + ZnSO4 0.5%) had the highest fruit yield (27.68 MT ha-1), longest fruit length (11.05 cm), largest fruit diameter (7.35 cm), weight (239.36 g), firmest (14.67 kg/cm2), pulp weight (164.71 g), lowest acidity (0.24%), while maximum fruit volume (223.38 ml) recorded in treatment T14 (CPPU 3 ppm + SA 100 ppm + B 0.5%). The lowest yield and quality was noticed in treatment T19 (control). The correlation of weather parameters viz., maximum temperature range (28 °C to 43.9 °C) of both seasons showed significant correlation while, minimum temperature range (9.5 to 26.1 °C) exhibited deleterious effect on yield and quality traits. The influence of average maximum RH (35 to 81%) of both seasons showed negative but significant correlation. However, positive and significant correlation was found between maximum humidity and acidity content. The average minimum RH (8 to 43%) exhibited significant effects on mango cv. Kesar.