The present study was intended to improve the chemical properties of a saline-sodic soil using the individual application of alfalfa residue and two biochars produced from sugarcane bagasse and walnut shell. at the weighting ratio of 5%; their concomitant application with gypsum. aluminum sulfate and the mixture of these two chemical amendments was considered. The experiment was condu... https://safeersappliancers.shop/product-category/hobs/