International Journal For Multidisciplinary Research

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Assessment of pest-predator distribution in bio-intensive pest management and farmers practice paddy croplands, an insect pest management approach

Author(s) Ms. P Sreeja, Dr. E.M Manogem, Dr. K Karthikeyan
Country India
Abstract Assessment of pest-predator distribution in bio-intensive pest management and farmers practice paddy croplands, an insect pest management approach
Sreeja P1, E.M Manogem2 and K. Karthikeyan3
1-2Insect Endocrinology Lab, Department of Zoology, University of Calicut, Malappuram District, India,1Ph-7012167900, E.mail-psreejaotp@gmail.com,2Ph-9895325917, E.mail-dr.manogem_em@uoc.ac.in.
3Entomology Lab, Regional Agricultural Research Station, Pattambi, Palakkad District, India, Ph-7902918408, E.mail-karthikeyan.k@kau.in

A Field Experiment was conducted at the Regional Agricultural Research Station (RARS) Pattambi, Palakkad district, Kerala, during the Rabi season of the year 2021-22 to validate the efficacy of Bio intensive pest management (BIPM) practices in rice variety Jyothi with the farmer's practice method (FP). A total of 7 orders Coleoptera (31.35%), Lepidoptera (21.12%), Hemiptera (20.15%), Odonata (11.20%), Hymenoptera (7.51%), Orthoptera (0.51%) containing 13 families and 17 species were collected from the sites. The highest number of individuals was collected from the BIPM paddy field (1210) than the FP field (769). In the BIPM field, the species diversity was more significant in Hemiptera, followed by Lepidoptera, Coleoptera, Diptera, Odonata, and Orthoptera. The species that showed the highest abundance was SCRIPOPHAGA INCERTULA (17.80%) and the lowest was SCRIPOPHAGA INNOTATA (1.53%). The growth Phase (Phase 3) and Milking Phase (Phase 5) exhibited the highest abundance of orders. The investigation noted the predator population had the highest abundance of coccinellids (Micraspis sp.) in BIPM fields, and a minimum was observed in FP field. The study divided the BIPM and FP paddy plots into six sections and the average values were analyzed to compare the diversity of natural enemies across the six plots in both fields. The Shannon Diversity index was greater in BIPM fields compared to FP fields (2.245 > 0.699). Evenness was higher in FP fields (1.39 > 0.86), and Menhinick's (1.336 > 0.632) and Margalef's (2.371 > 0.990) indices were higher in BIPM fields. Simpson's diversity was significantly higher in BIPM field plots (0.873 > 0.300). BIPM recorded a significantly higher number of predatory populations of coccinellids and mirid bugs. The BIPM field recorded the highest yield of 2193.75 Kg/ha compared to Farmers Practice, which had 1916.67 Kg/ha during this study period.
Keywords Biointensive pest management, rice, predators, major pests, Insect diversity
Field Biology > Zoology
Published In Volume 7, Issue 5, September-October 2025
Published On 2025-09-05
DOI https://doi.org/10.36948/ijfmr.2025.v07i05.55136
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