ArticleScientific reports2026
Ecology, host plant resistance, and management of paddy black beetle (Heteronychus lioderes) in rice under north-western Himalayan conditions.
Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The paddy black beetle, Heteronychus lioderes Redtenbacher, has emerged as an important soil-dwelling pest in rice ecosystems of the north-western Himalayas. This study evaluated its population dynamics, host plant resistance, and management under mid-hills field conditions. The pest appeared in late July and peaked in early August, causing up to 48.4% tiller infestation. Population build-up showed significant positive correlation with minimum temperature, relative humidity, and rainfall. Screening of 60 rice genotypes revealed no highly resistant entries, although T-23 and Vallabh Basmati-24 exhibited moderate resistance. Among management options, Chlorpyrifos was most effective, recording lowest infestation (13.18%) and highest grain yield (35.33 q ha⁻¹), followed by carbofuran and clothianidin. Botanical treatments were less effective but offered eco-friendly alternatives. The study highlights the importance of integrating climatic monitoring, host resistance, and timely interventions for sustainable management of H. lioderes.
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