Effects of Bacillus FS-3 on growth of tomato (Lycopersicon esculentum L.) plants and availability of phosphorus in soil
2007
Turan, M.,Atatuerk Univ., Erzurum (Turkey). Faculty of Agriculture | Ataoglu, N.,Atatuerk Univ., Erzurum (Turkey). Faculty of Agriculture | Sahin, F.,Yeditepe Univ., Istanbul (Turkey). Dept.of Genetic and Bioengineering
The effects of phosphate solubilizing bacterium (Bacillus FS-3; PSB) application on P contents of tomato plants, growing performance and phosphorus forms in soil were evaluated under greenhouse conditions. Five different phosphorus fertilizer treatments (normal superphosphate, triple superphosphate, di-ammonium phosphate, phosphoric acid, and rock phosphate) with and without bacterium (Bacillus FS-3) were applied in pots as 344 kg P/ha. Basal fertilizers were applied to all the pots as 180 kg N/ha (NH4NO3 33% N), 100 kg K/ha (K2SO4 50% K2O). The results obtained showed that P availability from soil increased with PSB application. The amount of plant available form of soil P fraction (resin-Pi + NaHCO3-Pi + NaHCO3-Po + NaOH-Pi + NaOH-Po) increased with PSB application. In all fertilizer types, PSB application converted approximately 20% of less available P into labile forms. Statistically significant differences were obtained in shoot and root dry weight of tomato plants treated with PSB. In all of the fertilizers, plant shoot and root weight and P uptake were greater with PSB applications than without PSB. The highest shoot-root dry weight and P uptake of plant were determined in triple superphosphate with PSB application treatment. The data in the present study suggest that the application of PSB may increase the availability of soluble phosphate.
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