Effect of plant growth regulators on growth, yield and quality of papaya (Carica papaya L.) Cv. Taiwan red lady

Abstract

An experiment trail in field was carried out on research entitled ‘’Effect of plant growth regulators on growth, yield and quality in papaya (Carica papaya L.) cv. Taiwan Red Lady’’ which was being held at V.P.O. Maheru, Tehsil Phagwara, District Kapurthala, Punjab under the Department of Horticulture, Lovely Professional University during the year 2019-20. Experimental trail was conducted by using various plant growth regulators NAA, GA3, IAA at different concentrations in randomized block designed. The results showed that significantly higher growth parameters like plant height (137.75 cm), plant girth (21.75 cm), no. of leaves per plant (21) and chlorophyll index (56.43), yield (14.92 kg) and fruit parameters like fruit weight (0.76 kg), fruit length (13.92 cm) and diameter (9.95 cm) with application of GA3 100 ppm. NAA 150 ppm improved quality parameters such as TSS (14.22), acidity (0.16%), ascorbic acid (70.22) and sugar content in fruit increased significantly.