Maize(Zea mays) biofertilization with B.megaterium and chemo-fertilization with rock or soluble P: Available N,P,K,Fe,Mn,Zn and Cu residual in soil after harvest.

S. Al-Ahmadi, Ahmed

doi:10.21608/assjm.2018.214701

Maize(Zea mays) biofertilization with B.megaterium and chemo-fertilization with rock or soluble P: Available N,P,K,Fe,Mn,Zn and Cu residual in soil after harvest.

Document Type : Original Article

Author

Ahmed S. Al-Ahmadi

10.21608/assjm.2018.214701

Abstract

Application of P-biofertilizer (Bacillus megaterium )and P-chemical fertilizers (rock phosphate and superphosphate) with and without organic farmyard manure was studied in a 3-factor field experiment on maize (Zea mays ). Factors being P-biofertilizer(B), P-chemical fertilizer(P) and organic manure(M). Treatments being: B₀(no-biofertilizer), and B₁ (P-dissolving B.megaterium bacteria), P₀ (no P), P₁ (rock phosphate 70 kg Pha^-1) and P₂(calcium superphosphate 35 kg P ha^-1), M₀(no manure), M₁ (24 Mg ha^-1) and M₂ (48 Mg ha^-1). Treatment not receiving any material gave 3.62 Mg grains ha^{-1 .}Applying any or more of the materials increased grain yield by as low as 1% by B₀P₀M₁ to 13% by B₀P₀M₂ , up to 87% by B₁P₂M₀ and as high as 129% by B₁P₂M_2..Increase main effects were: B = 40.4% , P = 25.6% for P₁ and 20.0 % for P₂; although P₂ surpassed P₁ in presence of the biofertilizer which enhanced soluble P-fertilizer.M= 5.1% for M₁ and 20.0% for M₂ effictive in presence or in absence of the biofetilizer. N,P,K,Fe,Mn,Zn and Cu residual in soil after harvest increased were by up to , 38,84, 42, 112, 269, 78, and 83 % for each respectively ; and highest availble contents were 91, 9.8, 308, 4.94, 1.55,1.51 and 0.42 mgkg^-1 for each respectively.

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