Vol. 12, Issue 6 (2023)

Author(s):
G Siva Koteswara Rao, VNP Sivarama Krishna, B Srinivasulu, G Thanuja Sivaram, VV Padmaja and K Arunodhayam

Abstract:
This study was carried out two successive years of 2021 and 2022 at YSRHU- College of Horticulture, Anantharajupeta to study the effect of foliar application of different chemicals and plant growth regulator on quality attributes and shelf life of papaya cv. Arka surya. Various chemicals such as oxalic acid, humic acid and K₂HPO₄, and plant growth regulators i.e., brassinosteriods, putrescine, N-Acetyl Thiazolidine 4-Carboxylic acid and salicylic acid were applied by foliar means at 45, 90, 135, and 180 DAP. The papaya fruits treated with putrescine @ 150 ppm had exhibited the highest pulp thickness (3.09 cm), fruit firmness (2.84 kg cm^-2), pulp weight (818.50 g), pulp to peel ratio (22.64), number of seeds per fruit (659.28), fresh weight (79.28 g), dry weight of seeds per fruit (12.42 g), ascorbic acid content (144.62 mg100 g^-1), total soluble solids (13.61 0Brix), TSS/Acid ratio (80.98), total sugars (10.10%), reducing sugars (7.23%), non-reducing sugar (2.85%), lycopene (5.34 mg 100g-1), carotenoids content (2.46 mg 100 g^-1), lowest titrable acidity (0.19%) and maximum shelf life (7.70 Days) in comparison to control.