Abstract:
Phosphorusdeficiencyis one of the factors limiting the production of seedlegumes,
includinggroundnut (Arachishypogeae L.). The aim of thisworkis to study the
availability of phosphorus to the five genotypes of peanuts as a function of the effect
of phosphate treatment TSP and CaP in twosoil types (rhizospheric and non-
rhizospheric) withpresence and / or absence of rhizobialstrain. The
experimentalresultsobtained show that the soil of the peanutgenotypescharacterized
by an alkaline pH which causes the decrease of solubility of P. Moreover, the
phosphate treatment TSP has a significanteffect on the phosphorus factor but it has no
influence Significant for calcium and nitrate. This is directly related to the nature of
the limestone soil of our regions and is a major limiting factor that prevents the
availability of phosphorus in the soil-plant system
