SIDHU AS, KUKAL SS, DIWEDI BS, SINGH D, THIND S, SINGH VK. Changes in some macro and micronutrient status in relation to pre-puddling tillage and puddling intensity in different soils cropped with rice (Oryza sativa). Indian J Agri Sci. 2011;76(3). Accessed October 21, 2025. https://epubs.icar.org.in/index.php/IJAgS/article/view/2663