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Mei, Melissa Teng Lok and Ngai, Paing Tan and Yei, Kheng Tee and Boon, Christopher Sung Teh (2024) Review of the innovations and challenges in developing rapid colorimetry and turbidity NPK soil test kits for commercial soil nutrient analysis. Pertanika Journal Tropical Agricultural Science (Malaysia), 47 (4). pp. 1405-1428. ISSN 1511-3701
Nabayi, Abba and Boon, Christopher Sung Teh and Ngai, Paing Tan and Kee, Ali Zuan Tan (2023) Nutrient leaching losses from continuous application of washed rice water on three contrasting soil textures. Pertanika Journal of Science & Technology (Malaysia), 31 (4). 1937 -1955. ISSN 2231-8526