Vol. 7, Issue 6 (2019)
Influence of boron, potassium and prohexadione-calcium on productivity of apple cv. red delicious
Author(s): Ishaq Ahmad Bhat, SA Simnani, Amit Kumar, MK Sharma and AS Sundouri
Abstract: To determine the influence of boron, potassium sulphate and prohexadione-calcium on productivity of Red Delicious apple, eighteen year old plants with uniform growth and vigour were selected in a private orchard of district Ganderbal, Jammu and Kashmir during 2016. The experiment comprised of six treatments viz. T1: control (no spray), T2: boric acid @ 1.5 g/l, T3: potassium sulphate @ 7 g/l, T4: boric acid @ 1.5 g/l + potassium sulphate @ 7 g/l), T5: prohexadione- Ca @ 100 ppm, T6: Prohexadione-Ca @ 150 ppm, was laid out in a complete randomized block design with four replication. The results obtained revealed significant effect of the treatments on all the studied characters. Foliar application of boric acid @ 1.5 g/l + potassium sulphate @ 7 g/l (T4) resulted in maximum increment in trunk girth (2.34 cm), tree volume (3.30 m3), shoot extension growth (52.53 cm), fruit set (48.50%), fruit yield (115.90 kg/tree), fruit length (7.97 cm), fruit diameter (8.34 cm), fruit weight (207.71 g), fruit colour (8.26), TSS (15.62oB), reducing sugar (10.88%) and total sugars (13.89%). Trees sprayed with Prohexadione-Ca @ 150 ppm (T6) resulted in maximum fruit retention (33.67%), yield efficiency (0.37 kg/cm2), TSS/acidity ratio (81.01), fruit firmness (8.91 kg/cm2) and calcium content (0.049%). Thus it can be concluded that the treatment T3 i.e. boric acid @ 1.5 g/l + potassium sulphate @ 7 g/l resulted in better yield of quality Red Delicious apples.
Pages: 1486-1490 | 263 Views 44 Downloads
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How to cite this article:
Ishaq Ahmad Bhat, SA Simnani, Amit Kumar, MK Sharma, AS Sundouri. Influence of boron, potassium and prohexadione-calcium on productivity of apple cv. red delicious. Int J Chem Stud 2019;7(6):1486-1490.
