Vol. 12, Issue 11 (2023)

Author(s):
Raushan Kumar, Rajnee Sharma, TR Sharma, SK Pandey, CS Pandey, Deepak Singh and Shikha Thakur

Abstract:
The present investigation entitled “Influence of Foliar Application of NAA, Urea, Nano-urea and Biofertisol on Fruit Drop and Retention of Mango (Mangifera indica L.) cv. Langra” was carried out at the Fruit Research Station, Imalia, Department of Horticulture, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur (M.P.) during the year 2022-23 on 23 years old mango plants cv. Langra spacing at 12 × 12 m. This experiment was carried out with statistical method RBD (Randomized Block Design) having three replications. Three levels of each i.e., NAA (20,30,40 ppm), Urea (2%, 3% and 4%), Nano-urea (0.2%, 0.3% and 0.4%) and Biofertisol (5ml/litre, 10ml/litre and 15 ml/litre) were sprayed at full bloom and pea stage of mango. In this experiment all the treatments significantly influenced the initial fruit set & percentage, number of fruits at pea, marble and pre-harvest stage, fruit drop at pea, marble and pre-harvest stage and final fruit retention compared to control. Foliar application of NAA @ 40ppm at full bloom and pea stage gave maximum number of initial fruit set & Fruit set percentage (12.12 and 1.86%), number of fruits at pea, marble and pre-harvest stage (5.11, 3.0 and 1.31) and minimum fruit drop percentage at pea, marble and pre-harvest stage (57.85%, 75.43% and 89.32%, respectively) with higher fruit retention (10.78%) at harvest stage compare to other treatments.