Crop Management

  • Foliar application of chelated EDTA calcium @ 0.2 per cent combined with boric acid @ 0.1 % (T5) was found to be the best for the characters viz., highest yield (19.76 kg vine-1), lowest berry cracking (3.50%), berry shattering (3.75%) and physiological loss in weight (90.15%) after 16 days of storage. Further, the same treatment resulted with the highest bunch length (20.82 cm) and rachis length (19.41 cm). The treatment Boric acid @ 0.1% (T4) registered the highest TSS (20.74oBrix) and the lowest acidity (0.53 %).
  • Retention of 9 leaves above the last cluster with the foliar application of GA3 @ 10 ppm (at parrot green stage) and 0.5 ppm of homobrassinolide (V2P3). The same treatment also recorded the highest bunch weight (255.08 g) fruit yield (23.71 kg vine-1), fruit yield (36.611 kg ha-1), number of bunches per vine (118.27), berry weight (5.33g), TSS (18.610Brix) and the lowest acidity (0.55%).
  • Pruning at 7th and 9th bud level produced that the highest shoot length (68.36 & 59.33 cm) leaf length (14.96 & 14.06 cm) and leaf width (11.74 & 12.25 cm) during summer pruning. Whereas during winter pruning season, the highest shoot length (53.11 & 41.75 cm) leaf length (14.90 & 14.68 cm) and leaf width (14.90 & 14.68 cm) were recorded at 3rd and 5th bud position.
  • Maximum number of bunches (81.60) and yield per vine (17.54 kg) were recorded in the treatment at 7th bud level during summer season followed by the 9th bud level pruning with the values of 70.93 and 15.92 kg per vine respectively.
  • The highest number of bunches per vine (61.93), yield per vine (11.81 kg) and total soluble solids content (21.38oBrix) were recorded in the pruning treatment at 3rd bud level during winter season. The same treatment recorded the lowest acidity value of 0.63 per cent. The titrable acidity was found to be lower during winter season pruning in all treatments (0.60 to 0.83%) compared to summer season (0.97 to 1.15%).