Urea-loaded biochar at optimal pyrolysis temperature reshapes soil microbial communities to improve nitrogen use efficiency and mitigate environmental pollution in water spinach (Ipomoea aquatica Forsk.) - Muhammad Usman Ghani; Mengjun Li; Jian Shen; Yingting Gong; Ronghui Wang; Yinghui Xu; Muhammad Kamran; Shree Prakash Pandey; Shaoying Ai (Soil and Tillage Research, 2026)