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<p>The present study evaluated the influence of nano-NPK fertilizers and biostimulants (humic acid and seaweed extract) on the fruit quality of cape gooseberry (<i>Physalis peruviana</i>&#xa0;L.). A&#xa0;total of 14&#xa0;treatments were tested, including control (recommended dose of fertilizers), varying doses of nano-NPK, and combinations with humic acid (0.15%) and seaweed extract (0.3%). The parameters evaluated for fruit quality assessment included total soluble solids (TSS), total sugars, reducing and non-reducing sugars, ascorbic acid, pH, titratable acidity, and specific gravity. Results revealed that treatments significantly influenced all fruit quality traits. The T<sub>12</sub> treatment (60% nano-NPK + 0.3% seaweed extract) consistently exhibited superior performance, showing 28–30% improvement over the control in TSS, sugars, and ascorbic acid content, along with enhanced acidity and fruit density. Treatments with seaweed extract performed better than those with humic acid, while nano-NPK alone showed moderate improvements compared to the control. The study indicates that the integration of nano-NPK and seaweed extract optimizes nutrient uptake, enhances carbohydrate and organic acid accumulation, and stimulates biosynthesis of vitamin&#xa0;C, resulting in fruits with better sweetness, acidity balance, density, and nutritional value. These findings suggest that reducing conventional fertilizer application and supplementing with nano-fertilizers and biostimulants is a&#xa0;sustainable and effective strategy for improving cape gooseberry fruit quality, marketability, and potential for value-added processing.</p>

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Enhancement of Cape Gooseberry Fruit Quality Through Integrated Nano-NPK Fertilization and Biostimulant Application

  • 期刊论文

  • 发表日期：

    2026年2月5日

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  • Vikanksha,
  • Jatinder Singh,
  • Arun Kumar

摘要

The present study evaluated the influence of nano-NPK fertilizers and biostimulants (humic acid and seaweed extract) on the fruit quality of cape gooseberry (Physalis peruviana L.). A total of 14 treatments were tested, including control (recommended dose of fertilizers), varying doses of nano-NPK, and combinations with humic acid (0.15%) and seaweed extract (0.3%). The parameters evaluated for fruit quality assessment included total soluble solids (TSS), total sugars, reducing and non-reducing sugars, ascorbic acid, pH, titratable acidity, and specific gravity. Results revealed that treatments significantly influenced all fruit quality traits. The T12 treatment (60% nano-NPK + 0.3% seaweed extract) consistently exhibited superior performance, showing 28–30% improvement over the control in TSS, sugars, and ascorbic acid content, along with enhanced acidity and fruit density. Treatments with seaweed extract performed better than those with humic acid, while nano-NPK alone showed moderate improvements compared to the control. The study indicates that the integration of nano-NPK and seaweed extract optimizes nutrient uptake, enhances carbohydrate and organic acid accumulation, and stimulates biosynthesis of vitamin C, resulting in fruits with better sweetness, acidity balance, density, and nutritional value. These findings suggest that reducing conventional fertilizer application and supplementing with nano-fertilizers and biostimulants is a sustainable and effective strategy for improving cape gooseberry fruit quality, marketability, and potential for value-added processing.