According to a review by Pavinato and Rosolem (2008), adding
plant material to soil also causes rapid increases in organic acid
(OA) concentrations, which occur through organic matter decomposition,
direct leaf run-off, and root and microbial exudates
production. Due to their anionic character, these OAs interact with
the soil solid phase and occupy P adsorption sites. In addition, they
can form stable complexes with aluminum (Al) and iron (Fe) that
prevent these metals from reacting with P (Sposito, 1989).
According to a review by Pavinato and Rosolem (2008), addingplant material to soil also causes rapid increases in organic acid(OA) concentrations, which occur through organic matter decomposition,direct leaf run-off, and root and microbial exudatesproduction. Due to their anionic character, these OAs interact withthe soil solid phase and occupy P adsorption sites. In addition, theycan form stable complexes with aluminum (Al) and iron (Fe) thatprevent these metals from reacting with P (Sposito, 1989).
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