Reddy, R. Uma, and M. Suryanarayan Reddy. “Availability of Major Nutrients in Soil As Influenced by Integrated Nutrient Management in Tomato-Onion Cropping System”. Indian Journal of Horticulture 68, no. 02 (June 30, 2011): 224–228. Accessed July 13, 2025. https://journal.iahs.org.in/index.php/ijh/article/view/1888.