Influence of combination of different levels of pruning, nutrition and paclobutrazol on soil and leaf nutritional status in mango (Mangifera indica L.) cv. Alphonso

Abstract

An experiment was carried out to investigate the influence of pruning, nutrition and paclobutrazol on the availability of nutrients in soil and leaf for two consecutive years (2017-18 and 2018-19) in the established mango orchard on 7 years old Alphonso mango trees and maintained at 5 X 5 m spacing at Regional Horticultural Research and Extension Centre, Bengaluru. Among the eleven treatments T4 showed best results. Higher readings for soil nitrogen (413.40 kg/ha), soil phosphorus (48.10 kg/ha), soil potassium (290.03 kg/ha), soil calcium (7.23 meq/100g), soil magnesium (3.61 meq/100g), soil sulphur (13.92 ppm), leaf nitrogen (1.28%), leaf phosphorus (0.20%), leaf potassium (1.04%), leaf calcium (0.63%), leaf magnesium (0.56%) and leaf sulphur (0.11%) are recorded with pruning at 10cm length along with PBZ @ 0.75 g a.i./ m canopy diameter, 75% of RDF, 10 kg vermicompost, 20g of AMC and mango special spray.