The Availability of P and K Contained in Pea and Fababean Residue to a Subsequent Crop
Assess the availability, release and use of P and K from field pea and fababean residues, to subsequest cereal crops.
IPNI-1995-CAN-SK16
30 Mar 1998
1997 Annual Interpretive Summary
Availability of Phosphorus Contained in Pulse Crop Residues to a Subsequent Crop, 1997
This study is evaluating the role of above-ground pulse crop residue in supplying plant available P to a following crop. Pulses fix N and are known to improve subsequent crops, but the N they supply does not completely explain their beneficial effects. 1997 results show P also appears to play a minor role, but conditions were dry at the sites this year. Next year, the researchers will use radioactive tracers to follow the release of P from pulse residues to continue their efforts to unravel this puzzle. Pulses are high users of P and K and are becoming increasingly important in prairie agriculture. SK-16F