Response of foliar application of calcium chloride and boric acid on fruit quality and leaf nutrient status of guava

The present investigation was conducted at HRC, Patharchatta, GB Pant University of Agriculture and Technology, Pantnagar, Uttarakhand in the year 2015–16. The experiment was undertaken to study the effect of foliar application of calcium and boron, sprayed at different growth stages viz., at fruit set and at two weeks after fruit set of guava. The experiment was comprised of nine treatments of different combinations of calcium and boron with three replications and experiment was laid out in randomized block design. The results showed that the maximum total soluble solids, ascorbic acid, total sugars, leaf nitrogen, calcium and boron content were recorded with application of calcium chloride @ 0.4% + boric acid @ 0.2% while, maximum potassium content was observed with application of calcium chloride @ 0.4% + boric acid @ 0.1%. Pre harvest foliar application of calcium chloride and boric acid sprayed twice was an effective way for improvement of fruit quality and leaf nutrient status of guava.