PHOSPHORUS UPTAKE BY DIFFERENT TREE SPECIES ON LOW PHOSPHORUS SOILS

Abstract

SUMMARY Phosphorus uptake by four tree species commonly used in agroforestry systems was investigated under different treatments using low phosphate soils in the greenhouse. Phosphorus uptake was evaluated by determining the amount of phosphorus in plant tissue. Results indicated that Prosopis juliflora had a greater uptake than Calliandra calothyrsus, Gliricidia sepium and Leucaena leucocephala under these conditions. Intercropping the tree species with millet had no significant effect on phosphorus uptake by millet compared with a millet monoculture.