Produção Nacional
Revisado por pares
Compost biofortification with diazotrophic and P‐solubilizing bacteria improves maturation process and P availability
2016; Wiley; Volume: 97; Issue: 3 Linguagem: Inglês
10.1002/jsfa.7819
ISSN1097-0010
AutoresJader Galba Busato, Daniel Basílio Zandonadi, Alan Ribeiro Mól, Rafaela Schmidt de Souza, Kamilla Pereira Aguiar, Fábio B Reis Júnior, Fábio Lopes Olivares,
Tópico(s)Soil Carbon and Nitrogen Dynamics
ResumoAbstract BACKGROUND Phosphorus‐containing fertilizers play an important role in tropical agriculture owing to the well documented shortage of plant‐available P in soils. Traditional P fertilizer production is based on chemical processing of insoluble rock phosphate ( RP ), which includes an acid treatment at high temperature. Processing the RP increases fertilizer costs, making it unavailable for undercapitalized and typically family‐based farmers. Biotechnological methods have been proposed as an alternative to increase phosphate availability in RP . In this study, Burkholderia silvatlantica and Herbaspirillum seropedicae were co‐inoculated into an RP ‐enriched compost with the aim of determining the effects of this technology on the levels of phosphatase activities and release of plant‐available P. RESULTS Inoculation of both microorganisms resulted in higher organic matter decomposition and higher humic acid formation in composting. Herbaspirillum seropedicae was the most promising microorganism for the production of acid and alkaline phosphatase enzymes. Both microorganisms presented potential to increase the supply of P from poorly soluble sources owing to increased levels of water‐soluble P and citric acid P. CONCLUSION Burkholderia silvatlantica and H. seropedicae in RP ‐enriched compost may represent an important biotechnological tool to reduce the overall time required for composting and increase the supply of P from poorly soluble sources. © 2016 Society of Chemical Industry
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