SHARMA, M. P., & BALI, S. V. (2014). Effect of row spacing and farmyard manure with increasing levels of nitrogen, phosphorus and potassium on yield and nutrients uptake in rice (Oryza sativa)-wheat (Triticum aestivum) cropping sequence*. The Indian Journal of Agricultural Sciences, 71(10). https://epubs.icar.org.in/index.php/IJAgS/article/view/40270