RESPONSE OF FOLIAR SPARY OF DIFFERENT CHEMICALS ON FLOWERING AND FRUITING IN DASHEHARI MANGO UNDER ULTRA HIGH DENSITY PLANTATION

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Date
2017-04
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DEPARTMENT OF FRUIT SCIENCE ASPEE COLLEGE OF HORTICULTURE AND FORESTRY NAVSARI AGRICULTURAL UNIVERSITY NAVSARI
Abstract
The present experiment entitled “Response of foliar spray of different chemicals on flowering and fruiting in Dashehari mango under ultra high density plantation” was conducted during the year 2015-16 at Regional Horticultural Research Station, ASPEE College of Horticulture and Forestry, Navsari Agricultural University, Navsari. The experiment was laid out in Randomized Block Design and replicated thrice. Nine treatments comprising urea (1, 1.5 and 2%), KNO3 (1 and 2%), ethephon 200mgl-1 and novel organic liquid fertilizer (1 and 2%) along with one control and they were sprayed twice, first fortnight of October and November. The effect of these treatments on different parameters of flowering, fruiting, yield and quality were recorded and analyzed statistically. ~ III ~ Results of present investigation revealed that among all the treatments, foliar application of KNO3 @ 2% treatment gave minimum vegetative shoot and maximum flowering shoot per terminal, minimum vegetative shoot (%), maximum flowering shoot (%), maximum length of panicle and minimum days for full bloom. Fruit setting percentage at pea, marble and maturity stage were significantly the maximum in same treatment. The number of fruits, average fruit weight and yield (kg/tree) were significantly the maximum in KNO3 @ 2% treatment. Untreated trees of mango produced minimum yield and its attributes as compared to other treatments. In case of quality parameters, foliar application of KNO3 @ 2% treatment improved the quality parameters like shelf life, TSS, total sugar, non reducing sugar, reducing sugar, fruit firmness, ascorbic acid and minimum titrable acidity in Dashehari mango under ultra high density plantation. For economic point of view, foliar application of KNO3 @ 2% treatment at first fortnight of October and November were more remunerative in respect to net realization and benefit cost ratio. On the basis of results obtained in present investigation, it can be summarized that foliar application of KNO3 @ 2% at first fortnight of October and November, can be utilized for enhancing flowering, fruit retention, yield and quality in Dashehari mango under ultra high density plantation.
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