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<p>This study evaluated the influence of summer pruning time and bud-retention intensity on vegetative growth, spur development, flowering behaviour and yield performance of apple (<i>Malus</i> <i>×</i> <i>domestica</i> Borkh.) cv. ‘Red Velox’ under high-density planting during the 2022 and 2023 growing seasons at Dr. Y.S.&#xa0;Parmar University of Horticulture and Forestry, Himachal Pradesh. Five pruning timings (15, 30, 45, 60&#xa0;and 75&#xa0;days after fruit set; T<sub>1</sub>–T<sub>5</sub>) were combined with three bud-retention intensities (2, 4&#xa0;and 6&#xa0;buds; B<sub>1</sub>–B<sub>3</sub>). Summer pruning significantly affected all measured parameters, with the interaction between timing and intensity being particularly important. Pruning at 45&#xa0;days after fruit set with 2‑bud retention (T<sub>3</sub> × B<sub>1</sub>) reduced vegetative vigour while improving spur density, return bloom, yield, productivity and yield efficiency relative to other treatment combinations and the unpruned control. The study elucidates that strategic manipulation of pruning timing in conjunction with moderated bud retention significantly modulates vegetative vigour and reproductive performance in high-density apple orchards under North-western Himalayan agro-climatic conditions.</p>

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Summer Pruning Strategies for Balancing Growth and Yield in High-Density Apple Orchards

  • 期刊论文

  • 发表日期：

    2026年6月19日

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  • Vaibhav R. Chauhan,
  • D. P. Sharma,
  • Pramod Verma,
  • Nitin Sharma,
  • Rakesh Kumar,
  • Kanishka

摘要

This study evaluated the influence of summer pruning time and bud-retention intensity on vegetative growth, spur development, flowering behaviour and yield performance of apple (Malus × domestica Borkh.) cv. ‘Red Velox’ under high-density planting during the 2022 and 2023 growing seasons at Dr. Y.S. Parmar University of Horticulture and Forestry, Himachal Pradesh. Five pruning timings (15, 30, 45, 60 and 75 days after fruit set; T1–T5) were combined with three bud-retention intensities (2, 4 and 6 buds; B1–B3). Summer pruning significantly affected all measured parameters, with the interaction between timing and intensity being particularly important. Pruning at 45 days after fruit set with 2‑bud retention (T3 × B1) reduced vegetative vigour while improving spur density, return bloom, yield, productivity and yield efficiency relative to other treatment combinations and the unpruned control. The study elucidates that strategic manipulation of pruning timing in conjunction with moderated bud retention significantly modulates vegetative vigour and reproductive performance in high-density apple orchards under North-western Himalayan agro-climatic conditions.