Brar, B. S., Dhillon, N. S., & Chand, M. (2012). Effect of farmyard manure application on grain yield and uptake and availability of nutrients in rice (Oryza sativa)-wheat (Triticum aestivum) rotation. The Indian Journal of Agricultural Sciences, 65(5). https://epubs.icar.org.in/index.php/IJAgS/article/view/18309