Influence of phosphorus solubilizing bacteria on the changes in soil available phosphorus and sugarcane and sugar yields |
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| Affiliation: | 1. College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, 100193 Beijing, China;2. Department of Crop Science, Faculty of Agriculture, University of Peradeniya, 20400, Peradeniya, Sri Lanka;3. School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Crawley (Perth), WA 6009, Australia;1. Department of Microbiology, Goa University, Taleigao Plateau, Goa, India;2. Department of Microbiology, P.E.S''s R.S.N. College of Arts and Science, Goa, India |
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| Abstract: | Influence of application of phosphorus solubilizing bacteria (PSB), Bacillus megatherium var. Phosphaticum, at 10 kg ha−1 of lignite based culture with and without varying amounts of P fertilizer was studied on soil available P changes and sugarcane growth and yield. The PSB application increased the PSB population in the rhizosphere and the plant available P status in the soil. It also enhanced tillering, stalk population and stalk weight, and led to a cane yield increase of 12.6% over no application. When used in conjunction with P fertilizers, PSB reduced the required P dosage by 25%. In addition, it was found that 50% of the costly super phosphate could be replaced by rock phosphate (RP), a cheap source of P, when applied in conjunction with PSB. The PSB improved juice quality and sugar yields. The influence of PSB was greatest when RP constituted a part of the P fertilizers applied. |
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