SHASHI PAL SINGH, et al. “ ~ F F E C T of Phosphorus and Farmyard Manure Application on Yield, Content and Uptake of Nitrogen, Phosphorus and Sulphur by Potato (Solanum Tuberosum)”. Indian Journal of Agronomy, vol. 41, no. 4, Oct. 2001, p. 41_4 , https://doi.org/10.59797/ija.v41i4.3719.