The Cont ribution Of Some Unconventional Fertilizer Materials To The Fertility Of Sandy Soils

The objective of this work is to investigate the individual and compined effects of sulfur, gypsum, and rock phosphate on the productivity of asandy soil which has been brought under cultivation in the past few years. A computer model will be utilized to assess the immediate and residual effects of the different amendments on both the soil and the grwing plants.