Eco-friendly bioagent-based approach for managing biotic stress in brinjal
2025
Jayakumar, J | Senthilkumar , T | Ravichandran , Venugopal | Ganapathy , S | Malathi , G
Plant-parasitic nematodes, particularly root-knot nematodes, are a major threat to global crop production, causing significant biotic stress. The high toxicity of chemical nematicides has raised concerns, highlighting the urgent need for safer, alternative control methods. Biological control using antagonistic bacteria or fungi offers a promising solution and can be integrated into nematode management strategies. A field experiment was conducted in a hotspot area to evaluate the effectiveness of various bioagents in managing Meloidogyne incognita nematodes on brinjal. The study involved treating brinjal seeds with bioagents and applying bioagents to the soil, comparing these treatments with an untreated control. Nematode infection in the root zone, plant growth parameters, nematode populations in soil and roots and brinjal fruit yield were recorded throughout the cropping period. These variables were monitored to assess the impact of bioagents treatments on crops health and productivity. Significant reduction in the nematode population and improved plant growth was recorded in Purpureocillium lilacinum treated plots. The present investigation highlights the potential of biocontrol agent P. lilacinum, in managing nematode infestations and enhancing productivity of brinjal crop.
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