Evaluation of Combined Management Options for Managing Pests of Lycopersicon esculentum Mill

Author: Nirupama Goudia, Rohit Raj Singh and Manoj Kumar Jena

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Abstract

The tomato, Lycopersicon esculentum Mill is susceptible to a wide range of insect pests that affect fruit quality and quantity. Continuous use of insecticides affects human health and have a negative impact on the environment. There is the need to find good agricultural pest management practices to combat the pests. Therefore, the present investigation was conducted to evaluate an effective combined management option for managing pests of L. esculentum Mill, at K.V.K. Instructional Farm located near College of Agriculture, Odisha University of Agriculture and Technology, Bhawanipatna, Kalahandi, Odisha during the cropping season 2020–21 from November, 2020 to May, 2021. All the treatments, T1 – Neem oil (Multi Neem) @ 5ml/litre at an interval of 7 days, T2 − Neem oil (Multi Neem) @ 5ml/litre + chlorphenapyr 10 EC (Ustad) @ 100g a.i./ha (4 gm or ml/litre) and emamectin benzoate 5% SG (Dhanuka EM-1) @ 12g a.i./ha (0.5g/litre) at an interval of 14 days in alternate sprays, T3 – Neem oil (Multi Neem) @ 5ml/litre + chlorphenapyr 10 EC (Ustad) @ 100g a.i./ha (4 gm or ml/litre) and emamectin benzoate 5% SG (Dhanuka EM-1) @ 12g a.i./ha (0.5g/litre) at an interval of 14 days in alternate sprays + Bacillus thuringiensis kurstaki (Green Larvicide) @ 4g/litre once in every 14 days, were superior to the untreated check (T4) and effective in managing the pests of tomato. Moreover, the Incremental Cost Benefit Ratio (ICBR) was superior in T3 (1: 2.60) followed by T2 (1: 1.66) and T1 (1: 1.18) subsequently. The T3 was the most dominant and cost-effective in managing pests of L. esculentum. However, natural enemies, spiders and coccinellids and pollinators, carpenter bee and honey bee were less in the T3 treatment as compared to others.

Keywords

IPM, Lycopersicon esculentum, natural enemies, pests, pollinators

Conclusion

All the treatments were significantly superior to untreated check but efficacy level varied between treatments. T3 produced the best impact, the lowest damage and the least number of insect pests/plant. It was followed by T2 and T1 in the order. However, T3 was significantly superior to T2 and T1. The highest number of natural enemies were recorded in T4 and T1 was at par safe with it. T2 and T3 were also apparently safe to predatory coccinellids and spiders but both were inferior to T1 and T4 in terms of safety to natural enemies. The ICBR was superior in T3 (1: 2.60) followed by T2 (1: 1.66) and T3 (1: 1.18) subsequently. The population of natural enemies, mostly spiders and coccinellids and pollinators, bee species, was less variable in T3 treatment.

References

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How to cite this article

Nirupama Goudia, Rohit Raj Singh and Manoj Kumar Jena (2023). Evaluation of Combined Management Options for Managing Pests of Lycopersicon esculentum Mill. Biological Forum – An International Journal, 15(3): 364-369.