Effect of bio fertilization with p-dissolving bacteria, rock phosphate, sulphur and organic manure in comparison with superphosphate on wheat (triticum aestivum) productivity and soil fertility.

T. A. Mohamed**O. H. Mohamed*, M. M. El-Sayed*, S. A. Ismail**,

Abstract

Two field trials were conducted in two successive growing seasons (2012/2013 and 2013/2014) at the Experimental Farm of Mallawy Agricultural Research Station (ARC), Minia Governorate, Egypt to study the effect of biofertilization using P- dissolving Bacillus megaterium, P- applied at 43kgha-1 as rock phosphate (RP), farmyard manure (FYM) at 24 Mgha-1, S at 240kgha-1 individually or in different combinations, as well as superphosphate at 16 or 32kgha-1 on wheat. Yield of grains, straw, and grain+ straw increased by addition of such treatment. Uptake of N, P and K increased by different magnitudes. Highest positive effect was by biofertilization combined with RP, FYM and S giving effect rather similar to that of the high P rate as superphosphate.

Key words

bacteria, rock phosphate, sulphur , organic manure