Singh, Dhanbir, and S.P. Dixit. 2013. “Influence of Integrated Nutrient Management on Forms of Soil Acidity, Aluminum and Iron on Turmeric Cultivation in Acid Alfisol”. Journal of Plantation Crops 41 (1):46-50. https://updatepublishing.com/journal/index.php/JPC/article/view/5901.