Abmed, H.A; M.M.El- Tokhy and M.EI.Mattar.( 2003). Organic manures as a solution for some chemical problems in calcareous soilsEgypt../.Appl. Sci: ! 8 (2) 2003 380-391
Abstract: This study was performed te investigate the effect of organic manuring on soil chemical properties of two calcareous soils widely differing in their calcium carbonate content (18.1 and 33.3 %). Soil samples were taken out from Tamia district, Fayoli.'11G0vcmorate. These soilswere clc'1SSifieads typic Haplocalcids, . A field experiment was conducted for each soil for one season where manures were added at rates of 10, 20, or 40 ton / Feddan. Manure sources tested were f