Compost biofortification with diazotrophic and P-solubilizing bacteria improves maturation process and P availability.
J Sci Food Agric
; 97(3): 949-955, 2017 Feb.
Article
en En
| MEDLINE
| ID: mdl-27226244
ABSTRACT
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.Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Fosfatos
/
Microbiología del Suelo
/
Burkholderia
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Herbaspirillum
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Fertilizantes
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Inoculantes Agrícolas
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Biofortificación
País/Región como asunto:
America do sul
/
Brasil
Idioma:
En
Revista:
J Sci Food Agric
Año:
2017
Tipo del documento:
Article
País de afiliación:
Brasil