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<p>Papaya (<i>Carica papaya</i> L.) is an economically and nutritionally significant crop facing several biotic and abiotic stress-based challenges. To address these issues, this study aimed to investigate the influence of growth regulation techniques on the growth, yield, and fruit quality of papaya grown under protected conditions. For this purpose, six different growth regulation techniques: T<sub>1</sub> (Control: no spray; no pollarding), T<sub>2</sub> (Chlormequat chloride 250&#xa0;ppm), T<sub>3</sub> (Chlormequat chloride 500&#xa0;ppm), T<sub>4</sub> (Pollarding), T<sub>5</sub> (Pollarding with Chlormequat chloride 250&#xa0;ppm), and T<sub>6</sub> (Pollarding with Chlormequat chloride 500&#xa0;ppm) were applied to the papaya plants grown under the protected conditions. The treatment T<sub>5</sub> resulted in the shortest plants (101.77&#xa0;cm), highest fruit retention rate (89.78%), maximum fruit weight (599.20&#xa0;g), and highest yield (17,464&#xa0;g), while treatment T<sub>2</sub> took the shortest time to achieve the first flowering (51.66&#xa0;days). The maximum number of fruits per plant (37.14), and highest fruit length (16.83&#xa0;cm) were recorded in the treatment T<sub>3</sub>. In terms of quality, the treatment T<sub>5</sub> was found to be having the highest TSS (14.27° Brix), highest titratable acidity (0.16%), highest ascorbic acid content (70.27&#xa0;mg/100&#xa0;g), and longest shelf life (5.10&#xa0;days). Hence, this study suggests that applying growth regulation techniques, especially the combination of pollarding with Chlormequat chloride at 250&#xa0;ppm, can effectively enhance the performance of papaya under protected cultivation. This approach offers a promising strategy for mitigating the challenges posed by biotic and abiotic stresses, potentially leading to more sustainable papaya production systems.</p> Graphical Abstract <p></p>

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Synergistic Effects of Pollarding and Chlormequat Chloride on Growth, Yield, Quality, and Pest-Disease Incidence in Papaya cv. F1-Red Lady Under Controlled Cultivation

  • 期刊论文

  • 发表日期：

    2025年3月3日

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  • Suvrajit Patra,
  • Sonu Nagar,
  • K. M. Renuka Swamy,
  • Anshuman Pathak,
  • Neeharika Kanth,
  • Sanjay Kumar Singh,
  • Gangadhar Nanda,
  • Asish Kumar Panda

摘要

Papaya (Carica papaya L.) is an economically and nutritionally significant crop facing several biotic and abiotic stress-based challenges. To address these issues, this study aimed to investigate the influence of growth regulation techniques on the growth, yield, and fruit quality of papaya grown under protected conditions. For this purpose, six different growth regulation techniques: T1 (Control: no spray; no pollarding), T2 (Chlormequat chloride 250 ppm), T3 (Chlormequat chloride 500 ppm), T4 (Pollarding), T5 (Pollarding with Chlormequat chloride 250 ppm), and T6 (Pollarding with Chlormequat chloride 500 ppm) were applied to the papaya plants grown under the protected conditions. The treatment T5 resulted in the shortest plants (101.77 cm), highest fruit retention rate (89.78%), maximum fruit weight (599.20 g), and highest yield (17,464 g), while treatment T2 took the shortest time to achieve the first flowering (51.66 days). The maximum number of fruits per plant (37.14), and highest fruit length (16.83 cm) were recorded in the treatment T3. In terms of quality, the treatment T5 was found to be having the highest TSS (14.27° Brix), highest titratable acidity (0.16%), highest ascorbic acid content (70.27 mg/100 g), and longest shelf life (5.10 days). Hence, this study suggests that applying growth regulation techniques, especially the combination of pollarding with Chlormequat chloride at 250 ppm, can effectively enhance the performance of papaya under protected cultivation. This approach offers a promising strategy for mitigating the challenges posed by biotic and abiotic stresses, potentially leading to more sustainable papaya production systems.

Graphical Abstract