Effect of plant growth regulators on flowering and fruit growth of guava (Psidium guajava L.) cv. ALLAHABAD SAFEDA

Abstract

The study was conducted in the gauva orchard of Assam Agricultural University, Jorhat during 2009. Six years old plants of uniform size and vigour planted at 6 x 6 m. were selected for the study. Experiment was laid out under Randomized Block Design with three replications and 11 treatments, to know the effect of plant growth regulators on flowering and yield of guava. The maximum number of flowers (16) per shoot, highest fruit set per cent (93.13) and maximum numbers of fruit per shoot at harvest (6.2) were found with 1000 ppm CCC. The maximum fruit length (9.8 cm), fruit girth (10.23 cm), fruit weight (182g) and volume (178.3 cc), minimum fruit drop (38.8%) and yield (37.1 kg/plant) were recorded under 50 ppm GA3 .