Effect of foliar application of calcium and boron on growth, yield and fruit quality of jackfruit (Artocarpus heterophyllus L.)
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Date
2018-05
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
The present experiment was carried out at Horticulture Research Centre, Patharachatta, G.B. Pant University of Agriculture and Technology, Pantnagar to study the effect of foliar application of calcium and boron on plant growth, yield and fruit quality of jackfruit. Experiment was conducted in Randomized Block Design with ten treatments and three replications comprising nutrients which were sprayed individually or in combination with each other viz., T1 : Calcium carbonate 0.2%, T2 : Calcium carbonate 0.4%, T3 : Calcium carbonate 0.6%, T4 : Borax 0.4%, T5 : Borax 0.6%, T6 : Borax 0.8%, T7 : Calcium carbonate 0.2%+ borax 0.4%, T8 : Calcium carbonate 0.4%+ borax 0.6%, T9 : Calcium carbonate 0.6% + borax 0.8%, T10 : Control. Treatments were applied three times as foliar spray at monthly interval starting from the initiation of flowering. The result of study revealed that treatment T9 (calcium carbonate 0.6% + borax 0.8%) significantly influence growth characters like increase in plant height, canopy spread, stem girth, tree volume, CSTA. Reproductive characters like male flower per tree, female flower per tree, total flowers per tree, number of fruit set per tree, per cent fruit set had highest value under treatment T9. Highest fruit yield per tree was obtained in treatment T9. All the physical characters of jackfruit i.e. Average fruit weight, pulp weight, rind weight, fruit length and fruit width were recorded highest with the treatment T9. With respect to quality parameters i.e. TSS, titratable acidity, TSS/acid, total sugar, reducing sugar, non reducing sugar, sugar/acid, ascorbic acid, vitamin A were highest in treatment T9. On the bases of above study it can be concluded that there was significant variation in tree growth (in terms of plant height, canopy spread, stem girth etc) yield contributing traits (number of flowers, fruit set, fruit weight, fruit size etc) along with good yield and fruit quality. Jackfruit tree should be sprayed thrice with calcium carbonate 0.6% +borax 0.8% at monthly interval starting from initiation of flowering.
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