Effect of Plant Growth Regulators and Micronutrients on Fruit Yield and Quality of Mango (Mangifera indica L.) cv. Dashehri

Abstract

The present investigation was conducted in 2024 -25 at Department of Fruit Science, Pt. K.L.S. CHRS, Pendri, Rajnandgaon (C.G.) India to evaluate the effect of plant growth regulators (GA₃ and NAA) and micronutrients (ZnSO₄ and Borax) on fruit yield and quality of mango (Mangifera indica L.) cv. Dashehri. The experiment comprised fifteen treatments and three replications. Individual, and combined applications of growth regulators and micronutrients, laid out in a randomized block design (RBD). Significant variations were observed among treatments for fruit yield, fruit volume, total soluble solids (TSS), reducing and non-reducing sugars, and titratable acidity. The combined application of NAA @ 20 ppm + Borax @ 0.2% (T8) recorded the highest fruit yield (69 kg/tree), maximum fruit retention at pea, marble, and pre harvest stages, highest fruit setting percentage (0.7%) and highest number of fruits per panicle (4.93). Whereas maximum fruit weight, TSS, and total sugar content with the lowest acidity recorded under T13 (NAA @ 20 ppm + ZnSO₄ @ 0.5%). In contrast, the treatment T0 (control) recorded the minimum values for all parameters. The results suggest that the combined use of growth regulators and micronutrients improves fruit yield and quality attributes of mango cv. Dashehri.