The possibility of biological phosphate fertilizers application in corn cultivation of Fars Province

In order to evaluate the possibility of biological phosphate fertilizers application and compare them with phosphorous chemical fertilizers in corn production, a 3-years field experiment, in the form of Randomized Complete Block Design with 4 treatments and three replications, was conducted in corn fields of Fars Province. The treatments were 1) without phosphorous fertilizer application (control), 2) application of phosphorous based on soil test as microbial phosphate source (Bio fertilizer), 3) application of phosphorous based on soil test as Golden Bio-phosphate source (Bio fertilizer) and 4) application of phosphorous based on soil test as triple super phosphate (chemical fertilizer). Based on soil test, it needs 75 kg.ha-1 P2O5 in every 3 years. Since there was some organic matter, sulfur, and zinc in the organic fertilizers, the calculated amount of these elements was also applied to other treatments. Results of statistical analysis showed that the highest total yield and grain yield, 15000 and 9559 kg per hectare, respectively, obtained from triple superphosphate application but were in a same statical group with microbial phosphate fertilizer. In addition there was a significant difference (P<0.01%) between triple super phosphate and control or Golden Bio-phosphate. In general, the results show that in same conditions firstly corn needs phosphorous fertilizers, secondly application of microbial phosphate source in corn fields is recommended and third using of Golden bio-phosphate source in corn fields is not recommended.