SIGNIFICANCE OF APPLIED SOME SOIL AMENDMENTS AND PHOSPHATE DISSOLVING BACTERIA FOR ENHANCING THE AVAILABILITY OF PHOSPHATE IN A CALCARIOUS SOIL | ||||
| Fayoum Journal of Agricultural Research and Development | ||||
| Article 6, Volume 25, Issue 2, July 2011, Page 66-75 PDF (477.62 K) | ||||
| Document Type: Research articles. | ||||
| DOI: 10.21608/fjard.2011.195501 | ||||
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| Authors | ||||
| Magda A. Ewais; Ahmed A. Khalil; Awatef A. Mahmoud | ||||
| Soils, Water and Environ. Res. Inst., Agric. Res. Center, Giza, Egypt. | ||||
| Abstract | ||||
| A field experiment was carried out on a Private Farm at Salah El-Din, El-Bostan (30° 43 ֿ 25° 14 ֿ N and 30° 17 ֿ 23° 94 ֿ E, elevation 14 m), Nobaria, El-Behiera Governorate, Egypt during the two successive growing seasons of 2008/2009 and 2009/2010. The main target of this study was at evaluating the best combination of rock phosphate with sulphur, organic manure (organic compost) and inoculation with phosphate dissolving bacteria to enhance the availability of phosphate from rock phosphate and their effects on yield and its components of broad bean plants (Vicia faba,L. Luzdo Otono cv.). The obtained results indicated that plant growth, seed and straw yields as well as nitrogen, phosphorus and potassium contents in various organs of broad bean plants were highly significantly increased due to the applied combined treatments comparing with the solely ones. It was also found that either sulphur application or inoculation with phosphate dissolving bacteria plus rock phosphate had a significant effect on broad bean yield and its quality, with a superior effect for sulphur application which was more effective than the biofertilizer (PDB). The interaction between rock phosphate combined with PDB or sulphur had significant effect on seed yield/fed, weight of 100 seeds and protein yield/fed. The highest values were recorded when broad bean plants were fertilized with rock phosphate combined with PDB plus sulphur and organic manure. Application of rock phosphate and different soil amendments individually or together increased N, P and K contents in straw and seeds yields of broad bean plants. The highest contents of the studied nutrients were found when the plants were fertilized by rock phosphate and different soil amendments together. Results also showed the important role of organic matter, sulphur and PDB for releasing phosphorus from rock phosphate. So, it could be concluded that, the combination of different applied soil amendments with simultaneous application of rock phosphate, as a natural Psource, found to be possibility for saving significant quantities from the industrialized inorganic phosphate fertilizers. | ||||
| Keywords | ||||
| Broad bean; organic manure; phosphate dissolving bacteria; soil amendments; sulphur; yield and its components | ||||
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