Authors
Vasu Mehta, Khushwinder Singh, Abdul Ahad
Published in
Scientific reports. Jun 28, 2026. Epub Jun 28, 2026.
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.
PMID:
42366207
Bibliographic data and abstract were imported from PubMed on 29 Jun 2026.
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