Abstract

Crop regulation treatments in Guava viz. one leaf pair pruning, two leaf pair pruning, three sprays (100, 150 and 200ppm) at flower bud differentiation stage and NAA (600 ppm) at flowering (control) were used to regulate rainy season crop in guava cv. L-49 during the years 2008-2011. Leaf pair pruning at different levels proved to be most effectivein avoiding rainy season crop whereas GA3 at different concentrations seem to be ineffective as compared to control. One leaf pair pruning resulted into maximum yield reduction in rainy season with subsequent maximum yield and fruit weight in winter season during the experimental years. Plants with one leaf pruning produced better quality fruits in both the seasons and recorded maximum TSS and ascorbic acid and minimum acidity. Overall profit was also highest in one leaf pair pruning by withholding rainy season crop.

Keywords: Crop regulation, GA3, Guava, leaf pair pruning, NAA