Influence of foliar application of nutrients and growth regulator on fruit drop, yield and fruit size and quality in Kinnow mandarin
2014
Gurjar, P.S. | Rana, G.S.
The present investigation was carried out on the 15-year-old Kinnow mandarin trees. Nutrients (KNO3, ZnSO4), growth regulator (2,4-D) and their combinations (KNO3 1% + 2,4-D 10 ppm, KNO3 2% + 2,4-D 10 ppm, KNO3 1% + ZnSO4 0.5%, KNO3 2% + ZnSO4 0.5% and ZnSO4 0.5% + 2,4-D 10 ppm) were applied as foliar spray in first week of May and August. Fruit drop was lowest (53.5%) with ZnSO4 0.5% + 2,4-D 10 ppm. Fruit length and breadth (6.05 and 6.98 cm), fruit weight (168.6 g), fruit yield per tree (43.7 kg), TSS (10.6%) and ascorbic acid (25.81 mg/ 100 ml juice) were recorded highest with KNO3 2%, KNO3 2% + 2,4-D 10 ppm and KNO3 2% + ZnSO4 0.5%, respectively. Highest juice content (49.72%) was recorded with 0.5% ZnSO4
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