Populations of Phosphate – Solubilizing Microorganisms from soils Under Temperate Fruit crops in Santa Catarina, and the Ability of some Isolates to Solubilize Natural Sources of Phosphates.
DOI:
https://doi.org/10.5007/%25xAbstract
Phosphate- Solubilizing microorganism were isolated from soils under temperate fruit crops using a glucose / soil extract medium supplemented with 5g K2HPO4 1-1 and 1g CaC12 1-1, populations were small, varying between 5 x 10³ and 3 x105 propagules per gram of dry soil. Soils from under peach contained an average of 1.25x105 propagules per gram of dry soil whilst those from under apple and vine contained 9,6x 104 and 9,4 x104 propagules per gram of dry soil respectively. It has been observed that the population sizes varied throughout the year; being higher in the in the summer and lower during the Winter. Fifty five isolates were selected and tested concerning the ability to solubilize natural sources of phosphate (Anitápolis – SC, Catalão –GO e Araxá –MG). Incorporated in the culture medium. A wide range of abilities was found. In Particular,6 isolates from under vine all showed strong solubilizing abilities.
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