ABSTRACT
The experiments aimed at evaluating the effect of biofertilization with phosphobacterin [phosphate dissolving bacteria-PDB] under variable levels of phosphatic fertilization with superphosphate on yield, yield components and seed quality [protein and oil percentage of soybean, sesame and sunflower]. The results showed significant responses to biofertilization on most of the yield, yield component characters, seed quality, protein, oil percentages of soybean, sesame and sunflower. Biofertilization increased seed yield by 20.4, 25.3 and 15.4% over the control treatment for soybean, sesame and sunflower, respectively. However, seed oil content showed a reversible trend compared to seed yield. The highest seed protein content was found by using 100 kg/fed. superphosphate for soybean, while sesame and sunflower seeds contained the highest protein percentages at 200 kg superphosphate