Scholarlink

<p>Conservation agriculture (CA) practices involving zero tillage (ZT) with crop residue retention can be applied to tackle the challenges of low soil fertility, high bulk density (BD), and declining soil health in the soybean–wheat (S–W) cropping system of the central Indian Vertisol for enhancing long-term sustainability.&#xa0;Therefore, a field experiment with factorial set up was conducted comprising 16 treatment combinations of four residue retention levels (0%, 30%, 60%, and 90%) and four nutrient regimes: N<sub>1</sub> (100% RDF-full N: P₂O₅:K₂O ha⁻¹), N<sub>2</sub> (75% <i>N</i> + 100% P₂O₅ and K₂O), N<sub>3</sub> (75% P₂O₅ + 100% N and K₂O), and N<sub>4</sub> (75% K₂O + 100% N and P₂O₅).&#xa0;The results revealed that ZT with 90% residue (ZTR<sub>90</sub>) and 100% RDF increased grain yields by 20% and 19.6% for soybean and wheat respectively, over ZT with no residue (ZTR<sub>0</sub>), along with the highest net return and benefit-cost ratio. Soil organic carbon (SOC) content and SOC stock also increased significantly in ZTR<sub>90</sub> and ZTR<sub>60</sub> over ZTR<sub>0</sub>. Partial or full residue retention with RDF improved soil BD, porosity, and nutrient availability highlighting the critical role of residue retention with balanced fertilization in long-term carbon sequestration and soil health enhancement. A strong positive relationship between SOC stock and crop productivity (R² = 0.85 for soybean; R² = 0.56 for wheat) indicated that SOC enrichment is vital for improving system performance.&#xa0;Overall, 90% residue retention with balanced fertilization (100% RDF) under ZT proved effective for enhancing yield, profitability, and soil health, highlighting CA as a robust strategy for sustainable intensification in Vertisol.</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

Residue and Nutrient Inputs Optimization for Sustainable Soybean-Wheat System Under Zero Tillage in Central Indian Vertisol

  • 期刊论文

  • 发表日期：

    2026年1月7日

查看全文
  • Bharti Parmar,
  • A. K. Vishwakarma,
  • Pramod Jha,
  • A. K. Biswas,
  • Bharat Prakash Meena,
  • Abinash Das,
  • Khushboo Rani

摘要

Conservation agriculture (CA) practices involving zero tillage (ZT) with crop residue retention can be applied to tackle the challenges of low soil fertility, high bulk density (BD), and declining soil health in the soybean–wheat (S–W) cropping system of the central Indian Vertisol for enhancing long-term sustainability. Therefore, a field experiment with factorial set up was conducted comprising 16 treatment combinations of four residue retention levels (0%, 30%, 60%, and 90%) and four nutrient regimes: N1 (100% RDF-full N: P₂O₅:K₂O ha⁻¹), N2 (75% N + 100% P₂O₅ and K₂O), N3 (75% P₂O₅ + 100% N and K₂O), and N4 (75% K₂O + 100% N and P₂O₅). The results revealed that ZT with 90% residue (ZTR90) and 100% RDF increased grain yields by 20% and 19.6% for soybean and wheat respectively, over ZT with no residue (ZTR0), along with the highest net return and benefit-cost ratio. Soil organic carbon (SOC) content and SOC stock also increased significantly in ZTR90 and ZTR60 over ZTR0. Partial or full residue retention with RDF improved soil BD, porosity, and nutrient availability highlighting the critical role of residue retention with balanced fertilization in long-term carbon sequestration and soil health enhancement. A strong positive relationship between SOC stock and crop productivity (R² = 0.85 for soybean; R² = 0.56 for wheat) indicated that SOC enrichment is vital for improving system performance. Overall, 90% residue retention with balanced fertilization (100% RDF) under ZT proved effective for enhancing yield, profitability, and soil health, highlighting CA as a robust strategy for sustainable intensification in Vertisol.