Effect of paclobutrazol and post flowering foliar sprays of nutrients for accelerating harvesting of jackfruit

Abstract

An investigation was undertaken to find out the effect of paclobutrazol and post flowering foliar nutrient sprays on harvesting, yield and fruit quality of jackfruit. Fourteen treatments consisted of soil application of paclobutrazol (PBZ @ 3 ml/m canopy diameter), and combinations of urea (1%), potassium nitrate (3%) and monopotassium phosphate (0.5%) were studied in randomized block design. Use of post-flowering foliar nutrient application of monopotassium phosphate (0.5%) and potassium nitrate with or without paclobutrazol accelerated harvesting in jackfruit. Post flowering foliar application of urea, with and without potassium nitrate and paclobutrazol delayed harvesting. All foliar sprays improved yield and quality of jackfruit. The treatment T12 (0.5% monopotassium phosphate at fruit set and 20 days after fruit set) was the best where 98.80 per cent of total fruits were harvested before rains and the highest B:C ratio of 2.40.