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<p>Weeds are a major problem in wheat crop causing low productivity. Nowadays, maximum doses of herbicides are used in wheat crop production, but after some time their negative effects are visible on crop and soil. The presence of ‘sorgoleone’ allelochemical in sorghum extract reduces weed density in early growth stage and increases the quality as well as soil microbial activity. Sequential application of sorghum extract (1:3) + ready-mix of clodinafop + metsulfuron 64&#xa0;g/ha as post emergence, significantly increased the microbial population in soil, and enhanced quality and production of wheat. Same treatment produced significantly higher grain yield of 4543&#xa0;kg/ha and magnitude of increments were 34.87% over weedy check and it was found statistically similar with sorghum extract (1:2) + ready-mix of clodinafop + metsulfuron 64&#xa0;g/ha. However, both the treatments showed significant superiority over all other treatments. Maximum soil bacterial and fungal populations were obtained under lower concentration of sorghum extract (1:3) at 60 DAS and at harvest stages of crop, respectively, which measured in terms of magnitude improvements as compared to the population recorded before spraying.</p>

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Partial substitution of herbicides with sorghum allelopathic extract and its impact on productivity of wheat and soil microbes

  • 期刊论文

  • 发表日期：

    2026年5月19日

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  • Devi Lal Kikraliya,
  • U. N. Shukla,
  • Krishna Saharan,
  • A. K. Meena,
  • Moola Ram,
  • R. C. Meena

摘要

Weeds are a major problem in wheat crop causing low productivity. Nowadays, maximum doses of herbicides are used in wheat crop production, but after some time their negative effects are visible on crop and soil. The presence of ‘sorgoleone’ allelochemical in sorghum extract reduces weed density in early growth stage and increases the quality as well as soil microbial activity. Sequential application of sorghum extract (1:3) + ready-mix of clodinafop + metsulfuron 64 g/ha as post emergence, significantly increased the microbial population in soil, and enhanced quality and production of wheat. Same treatment produced significantly higher grain yield of 4543 kg/ha and magnitude of increments were 34.87% over weedy check and it was found statistically similar with sorghum extract (1:2) + ready-mix of clodinafop + metsulfuron 64 g/ha. However, both the treatments showed significant superiority over all other treatments. Maximum soil bacterial and fungal populations were obtained under lower concentration of sorghum extract (1:3) at 60 DAS and at harvest stages of crop, respectively, which measured in terms of magnitude improvements as compared to the population recorded before spraying.