Ahmed, Imran, Mahamuod Ahmed, & Muawia Hamad.
" Direct and residual effects of chicken manure on soil air dry bulk density and moisture content of a desert plain soil and wheat (Triticum aestivum  L.) yield, Northern State, Sudan." <em>Gezira Journal of Agricultural Science</em> [Online], 16.1 (2018): n. pag. Web.  3 Jun. 2026