Moisture Regime Influencing Different Fractions of Applied Phosphorus in Calcareous Soil of North Bihar

Abstract

The soil under study was of calcareous in nature baving 30%
calcium carbonate. Fractionation of different inorganic bound P in
soil viz AI-P and occ. AI-, Fe-P occ. Al-P and Ca-P periodically
followed the weathering sequence of Ca-P > occ. Fe-P> Fe-P which
is expected of young alluvium soil of calcareous origin. Neither
Al-P nor occ Fe-P, Al-P was detected in the soil under both the
situations, i.e., at field capacity and water logged condition irrespective
of change in incubation period or levels of P₂O₅ applied.