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<p>In high density apple orchards, precise fertigation can improve both fruit quality and nutrient status. This study investigated the effects of different fertigation doses and intervals on fruit quality and leaf nutrient content in two apple cultivars, ‘Mitch Gala’ and ‘Red Chief Camspur’, grafted on M9T337 rootstock. The experiment, conducted at the Division of Fruit Science, SKUAST‑K, Srinagar during 2020–2021, comprised 26&#xa0;treatment combinations involving three fertilizer doses (125%, 100%, and 75% of the recommended dose of fertilizers, RDF) applied at four intervals (7, 14, 21, and 28&#xa0;days) in a&#xa0;randomized complete block design. The results indicated that weekly fertigation with 100% and 125% RDF significantly enhanced fruit quality parameters including total soluble solids, total sugars, anthocyanin content and vitamin&#xa0;C, while reducing acidity. Leaf nutrient analysis revealed higher nitrogen, phosphorus and potassium levels under these treatments. Although 125% RDF produced slightly higher values, differences with 100% RDF were not statistically significant. Therefore, fertigation with 100% RDF at weekly intervals is recommended as a&#xa0;sustainable practice to maintain high fruit quality and nutrient uptake in high-density apple orchards.</p>

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Impact of Variable Fertigation Regimes On Fruit Quality and Leaf Nutrient Uptake in Two Apple Cultivars: ‘Mitch Gala’ and ‘Red Chief Camspur’

  • 期刊论文

  • 发表日期：

    2026年1月10日

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  • Insha Majid,
  • Iqra Majeed,
  • A. H. Pandit,
  • M. A. Mir,
  • Shaila Din

摘要

In high density apple orchards, precise fertigation can improve both fruit quality and nutrient status. This study investigated the effects of different fertigation doses and intervals on fruit quality and leaf nutrient content in two apple cultivars, ‘Mitch Gala’ and ‘Red Chief Camspur’, grafted on M9T337 rootstock. The experiment, conducted at the Division of Fruit Science, SKUAST‑K, Srinagar during 2020–2021, comprised 26 treatment combinations involving three fertilizer doses (125%, 100%, and 75% of the recommended dose of fertilizers, RDF) applied at four intervals (7, 14, 21, and 28 days) in a randomized complete block design. The results indicated that weekly fertigation with 100% and 125% RDF significantly enhanced fruit quality parameters including total soluble solids, total sugars, anthocyanin content and vitamin C, while reducing acidity. Leaf nutrient analysis revealed higher nitrogen, phosphorus and potassium levels under these treatments. Although 125% RDF produced slightly higher values, differences with 100% RDF were not statistically significant. Therefore, fertigation with 100% RDF at weekly intervals is recommended as a sustainable practice to maintain high fruit quality and nutrient uptake in high-density apple orchards.