Scholarlink

<p>Reducing mineral fertilizer inputs while maintaining crop productivity is a central challenge for sustainable grain legume production. This study evaluated whether biochar–biostimulant combinations could improve mungbean (<i>Vigna radiata</i> L.) performance under reduced NPK fertilization. A polytunnel pot experiment was conducted using a completely randomized 2 × 4 factorial design with two NPK levels, 100% and 50% of the recommended dose, and four treatments: biochar alone, biochar + humic acid, biochar + <i>Bacillus amyloliquefaciens</i>, and biochar + <i>Pseudomonas fluorescens</i>. Biostimulant addition to biochar improved plant growth, pigment status, and antioxidant response, with the strongest responses observed under reduced NPK supply. Under 50% NPK, biochar + <i>P. fluorescens</i> increased grain yield by approximately 90% compared with biochar alone and maintained grain yield (4.00&#xa0;g plant⁻¹) comparable to the 100% NPK biochar-only control (3.85&#xa0;g plant⁻¹). It also enhanced nodulation, increased total chlorophyll by approximately 60%, and reduced malondialdehyde by approximately 50%. Grain weight was positively associated with nodule number and ascorbic acid content and negatively associated with H₂O₂ content. These findings support biochar-assisted <i>P. fluorescens</i> supplementation as a promising strategy for sustaining mungbean productivity under reduced NPK input, warranting further field validation for broader applicability.</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

Biochar-biostimulant combinations enhance nodulation, yield, and antioxidant defense in mungbean under reduced NPK fertilization

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月30日

查看全文
  • Mehedi Amin,
  • Md. Nasir Hossain Sani,
  • Md. Mahbubur Rahman,
  • Suraiya Akter,
  • Md. Riaz Mahabub,
  • Sayed Mohammad Mohsin,
  • Mohammed Ariful Islam,
  • Jean Wan Hong Yong,
  • Abu Noman Faruq Ahmmed

摘要

Reducing mineral fertilizer inputs while maintaining crop productivity is a central challenge for sustainable grain legume production. This study evaluated whether biochar–biostimulant combinations could improve mungbean (Vigna radiata L.) performance under reduced NPK fertilization. A polytunnel pot experiment was conducted using a completely randomized 2 × 4 factorial design with two NPK levels, 100% and 50% of the recommended dose, and four treatments: biochar alone, biochar + humic acid, biochar + Bacillus amyloliquefaciens, and biochar + Pseudomonas fluorescens. Biostimulant addition to biochar improved plant growth, pigment status, and antioxidant response, with the strongest responses observed under reduced NPK supply. Under 50% NPK, biochar + P. fluorescens increased grain yield by approximately 90% compared with biochar alone and maintained grain yield (4.00 g plant⁻¹) comparable to the 100% NPK biochar-only control (3.85 g plant⁻¹). It also enhanced nodulation, increased total chlorophyll by approximately 60%, and reduced malondialdehyde by approximately 50%. Grain weight was positively associated with nodule number and ascorbic acid content and negatively associated with H₂O₂ content. These findings support biochar-assisted P. fluorescens supplementation as a promising strategy for sustaining mungbean productivity under reduced NPK input, warranting further field validation for broader applicability.