Effect of Feldspar, Compost and Biochar on Cultivating Cowpea (Vigna unguiculata ssp. unguiculata) Plant and Soil Sandy Clay Loam Properties
M. Doaa & A. E. Ashmawi · Asian Soil Research Journal · 2022
The crop production in Egypt relies completely on imports to meets its annual requirement of potash fertilizers besides; the high cost of conventional, water soluble K fertilizers constrains their use by most of the farmers in the country. This work was conducted cowpea (Vigna un...
Open access
Research Article
10.9734/asrj/2022/v6i130123