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<p>Cucumbers (<i>Cucumis sativa</i>&#xa0;L.) are economically important vegetable crops globally. Chewing and phloem-feeding herbivores cause significant damage to the cucumber. Insecticides are widely used to control herbivores but cause severe health hazards. Studies have suggested that <i>Trichoderma </i>may provide an alternative approach to controlling herbivores. Hence, this study explored the effects of <i>Trichoderma</i> and insecticides for controlling aphid (<i>Aphis gossypii</i> Glover), whitefly (<i>Aleurodicus disperses</i> Russell) and red pumpkin beetle (<i>Aulacophora foveicollis</i> Lucas) in cucumber. A&#xa0;semi-field pot experiment was conducted using <i>Trichoderma asperellum </i>(OR125623) (@ 2 × 10<sup>6</sup> CFU/gm) and <i>Trichoderma harzianum</i> (@ 2 × 10<sup>6</sup> CFU/gm) sprayed on the cucumber @ 5 gm/liter water. Two insecticides, Cord 10% EC and Cartap 50&#xa0;SP, and a&#xa0;control were also sprayed on the cucumber. Aphid, whitefly and red pumpkin beetle population densities were higher in insecticide-treated plots than in <i>Trichoderma</i>-treated plots, indicating a&#xa0;significant reduction. <i>T.&#xa0;harzianum</i> showed the highest efficacy for the reduction of herbivore populations. The foliar application of <i>Trichoderma</i> showed more positive effects on parasitoids than chemical control. Cucumber mosaic virus was reduced by 8–10% than control in the dual application of <i>Trichoderm</i>, suggesting a&#xa0;synergistic effect between the species. Total chlorophyll and carotenoid content in the leaf remains unaffected. The number of trichomes per leaf, fruit length and yield per plant increased significantly in both the Trichoderma-treated and insecticide-treated groups compared to the control group. Our research has broader implications for cucurbits, insect and disease management with less reliance on insecticides, considering <i>Trichoderma</i> as a&#xa0;potential alternative.</p>

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Effects of Trichoderma and Insecticides on Chewing and Phloem-feeding Herbivores in Cucumber

  • 期刊论文

  • 发表日期：

    2026年5月22日

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  • Kamrul Hassan,
  • Salma Sarker,
  • Md Musfiqur Alam,
  • Tonmoy Sarkar,
  • Md Fuad Mondal,
  • Mahfuza Pervin

摘要

Cucumbers (Cucumis sativa L.) are economically important vegetable crops globally. Chewing and phloem-feeding herbivores cause significant damage to the cucumber. Insecticides are widely used to control herbivores but cause severe health hazards. Studies have suggested that Trichoderma may provide an alternative approach to controlling herbivores. Hence, this study explored the effects of Trichoderma and insecticides for controlling aphid (Aphis gossypii Glover), whitefly (Aleurodicus disperses Russell) and red pumpkin beetle (Aulacophora foveicollis Lucas) in cucumber. A semi-field pot experiment was conducted using Trichoderma asperellum (OR125623) (@ 2 × 106 CFU/gm) and Trichoderma harzianum (@ 2 × 106 CFU/gm) sprayed on the cucumber @ 5 gm/liter water. Two insecticides, Cord 10% EC and Cartap 50 SP, and a control were also sprayed on the cucumber. Aphid, whitefly and red pumpkin beetle population densities were higher in insecticide-treated plots than in Trichoderma-treated plots, indicating a significant reduction. T. harzianum showed the highest efficacy for the reduction of herbivore populations. The foliar application of Trichoderma showed more positive effects on parasitoids than chemical control. Cucumber mosaic virus was reduced by 8–10% than control in the dual application of Trichoderm, suggesting a synergistic effect between the species. Total chlorophyll and carotenoid content in the leaf remains unaffected. The number of trichomes per leaf, fruit length and yield per plant increased significantly in both the Trichoderma-treated and insecticide-treated groups compared to the control group. Our research has broader implications for cucurbits, insect and disease management with less reliance on insecticides, considering Trichoderma as a potential alternative.