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<p>Root-knot nematodes (RKNs) are a major threat nowadays for tomato growers as they causes huge losses in tomato production worldwide. Chemical nematicides are expensive and harmful that’s why present investigation was conducted to assess the effectiveness of test crops and cultural practice models to control <i>Meloidogyne incognita</i> in <i>Solanum lycopersicum</i> L. under polyhouse. The highest decrease in average percent density was recorded in mustard (-64.08 ± 1.97) followed by marigold (-53.10 ± 1.23). The efficient crop rotation in managing <i>M. incognita</i> is tomato-mustard-tomato followed by tomato-marigold-tomato rotation. In row intercropping models, mustard showed the highest reduction in J2 density (-61.54 ± 0.81%) followed by marigold (-55.89 ± 0.55%). In plant intercropping, the greatest reduction − 50.12 ± 2.47% with mustard was recorded followed by marigold and chenopodium. Capsicum, cowpea and frenchbean were less effective. The disease incidence and index (DI) decreased and control efficiency (46.75 ± 1.17%) increased in mustard in crop rotation model. Crop yield and income output values increased for crop rotation models. The study highlights crop rotation model more effective than the row intercropping model in generating higher yield and estimated returns based on market price of tomato. Moreover, nematode-antagonistic or trap crops effectively regulate the population of <i>M. incognita</i> while maintaining ecological balance and minimizing environmental impact.</p>

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Management of root-knot nematode, Meloidogyne incognita in tomato through crop rotation and intercropping under polyhouse conditions

  • 期刊论文

  • 发表日期：

    2026年1月5日

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  • Samiksha Jhamta,
  • Neelam Thakur,
  • Kanwaljit Kaur Ahluwalia

摘要

Root-knot nematodes (RKNs) are a major threat nowadays for tomato growers as they causes huge losses in tomato production worldwide. Chemical nematicides are expensive and harmful that’s why present investigation was conducted to assess the effectiveness of test crops and cultural practice models to control Meloidogyne incognita in Solanum lycopersicum L. under polyhouse. The highest decrease in average percent density was recorded in mustard (-64.08 ± 1.97) followed by marigold (-53.10 ± 1.23). The efficient crop rotation in managing M. incognita is tomato-mustard-tomato followed by tomato-marigold-tomato rotation. In row intercropping models, mustard showed the highest reduction in J2 density (-61.54 ± 0.81%) followed by marigold (-55.89 ± 0.55%). In plant intercropping, the greatest reduction − 50.12 ± 2.47% with mustard was recorded followed by marigold and chenopodium. Capsicum, cowpea and frenchbean were less effective. The disease incidence and index (DI) decreased and control efficiency (46.75 ± 1.17%) increased in mustard in crop rotation model. Crop yield and income output values increased for crop rotation models. The study highlights crop rotation model more effective than the row intercropping model in generating higher yield and estimated returns based on market price of tomato. Moreover, nematode-antagonistic or trap crops effectively regulate the population of M. incognita while maintaining ecological balance and minimizing environmental impact.