Scholarlink

<p>The paddy black beetle, <i>Heteronychus lioderes</i> 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 <i>H. lioderes</i>.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Ecology, host plant resistance, and management of paddy black beetle (Heteronychus lioderes) in rice under north-western Himalayan conditions

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年6月28日

查看全文
  • Vasu Mehta,
  • Khushwinder Singh,
  • Abdul Ahad

摘要

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.