Effect of Plant Growth Regulators on Yield and Quality of Winter Season Guava (Psidium Guajava L.) Cv. L-49

India during 2021-22 to assess the effect of plant growth regulators on yield and quality of winter season guava (Psidium guajava L.) cv.L-49.The experiment was conducted in a Randomized Block Design with three replications.The experiment consisted of nine treatments including two concentration of NAA (150 ppm and 200 ppm), and two concentrations of Benzyl adenine (15ppm and 20 ppm), combinations of aforesaid (NAA & BA) i.e., NAA (75 ppm) + BA (15 ppm), NAA (75 ppm) + BA (20 ppm), NAA (100 ppm) + BA (15 ppm), NAA (100 ppm) + BA (20 ppm) and a Control (Water spray).The results showed significant effect of various concentrations of PGRs and recorded maximized physical attributes viz., fruit weight (155.36g),fruit length (7.67cm), fruit width (7.53cm), fruit volume (140.67ml),pulp content (96.62%), pulp : seed ratio (28.64), fruit yield per tree (61.61kg), fruit yield per ha (171.13q), and specific gravity (1.11g/cc) with foliar application of T 2 (NAA 200 ppm), however the seed weight (5.24 g) was minimized.The chemical characters i.e., TSS (12.01 0 brix), ascorbic acid (234.14 mg/100 g), reducing sugar (4.21%), non-reducing sugar (3.72%) and total sugars (7.93%) were also significantly high with foliar application of T 2 (NAA 200 ppm).Further, it was found that the application of NAA 200 ppm (T 2 ) increased the benefit: cost ratio (3.77:1) of guava cv.L-49.