Effect of plant growth regulators on chemical quality of papaya (Carica papaya) cv. Red Lady

Abstract

The present investigation has been conducted for two consecutive years (2018-19 and 2019-20) to determine the effect of various phyto bio regulators on chemical quality of papaya (Carica papaya) cv. Red Lady in a randomized block design using factorial arrangement with 11 treatments and 03 replications. The treatment consists of two concentrations i.e. 100 ppm & 150 ppm of various phyto bio regulators which includes Naphthalene acetic acid (100 and 150 ppm), Gibberellic acid (100 and 150 ppm), Benzyl adenine (100 and 150 ppm), Ethrel (100 and 150 ppm) and 2,3,5-Triiodo benzoic acid (100 and 150 ppm). The study revealed that phyto bio regulators significantly affect the chemical quality of papaya fruits. The ascorbic acid was found to be highest in 150 ppm of Gibberellic acid while Ethrel (150 ppm) recorded significantly highest value of TSS, total sugar, reducing sugar, non-reducing sugar, sugar: acid ratio and lowest value of titrable acidity.