2025, Vol. 8, Issue 5, Part H

author(s)
Bhavana H, Bhagwan A and Samuel Sparjan Babu D

abstract
An experiment was conducted to study the effect of nano-fertilizers and gluconates on fruit set and yield of mango (Mangifera indica L.) cv. Banganpalli at Fruit Research station, Sangareddy, Telangana. The experiment was carried out with factorial randomized block design with two factors and 15 treatments, first factor includes macronutrients nano N and K with different concentrations (M₁-Nano N&K -2ml/l, M₂- Nano N&K -4ml/l and M₃-KNO₃-10g/l) and second factor includes micronutrients in the form of nano and gluconates at different concentrations (N₁- Nano Zn+Fe+B+Mg-2ml/l, N₂- Nano Zn+Fe+B+Mg-4ml/l, N₃- Zn+Fe+B+Mg gluconates-2ml/l, N₄- Zn+Fe+B+Mg gluconates-4ml/l and N₅- Micronutrient's mix-2g/l). Selected mango trees were foliar sprayed twice with all the nutrients before flowering and at marble stage. Among different concentrations of nano N and K, nano N & K-2ml/l (M₁) has resulted in 36% significantly increased fruit yield which might be due to increased fruit set (6.58%), fruit weight (386.8 g) and number of fruits/tree (151.1) compared to KNO₃-10g/l (M₃) followed by nano N & K-4ml/l (M₂) and least was recorded by KNO₃-10g/l (M₃). Among micro-nutrients (Zn+Fe+B+Mg), nano (Zn+Fe+B+Mg)-2ml/l (N₁) has resulted in 12.7% significantly increased fruit yield which might be due to increased fruit set (6.14%), and number of fruit tree^-1 (136.0) compared to N_5- micronutrient’s mix and least was recorded by N_5-micronutrient’s mix. Among interactions nano N&K-2 ml/l + nano Zn+Fe+B+Mg)-2ml/l (M₁N₁) has resulted in 51% significantly higher yield which might be due to increased fruit set (6.81%), fruit weight (424.3 g) and number of fruit tree^-1 (161.6) compared to (M₃N₅) followed by M₁N₄ - nano N & K at 2ml/l along with (Zn+Fe+B+Mg) gluconates and least was recorded by M₃N₅ - KNO₃-10g/l and micro-nutrient mix.