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Abstract
The aim of the present work is to study the effect of different fertilizers mineral fertilizers as (chemical ”super phosphate and/or potassium sulfate” and natural ”rock phosphate and/or feldspar’’) in absence or presence of biofertilizers as Bacillus strains (Bacillus polymyxa, Bacillus megaterium and Bacillus circulans) on growth, yield, yield components and chemical composition of two tested plants, cowpea (summer annual legume crop) and wheat (winter annual cereal crop).The first part was conducted to investigate the effect of different fertilizers on growth, yield and chemical composition of cowpea
The second part was conducted to study the residual effect of different fertilizers as (chemical mineral fertilizers ”super phosphate and/ or potassium sulfate” and natural mineral fertilizers ”rock phosphate and/or feldspar’’) in absence or presence of biofertilizers as Bacillus strains on growth, yield characters and chemical composition of wheat.