Considering belowground nitrogen of crops grown in prairie agroecosystems
| dc.contributor.author | Arcand, M.M. | |
| dc.contributor.author | Farrell, R.E. | |
| dc.contributor.author | Knight, J.D. | |
| dc.date.accessioned | 2018-08-03T15:26:23Z | |
| dc.date.available | 2018-08-03T15:26:23Z | |
| dc.date.issued | 2011-03-15 | |
| dc.description.abstract | Grain legumes can improve the yield of succeeding cereal crops through nitrogen and non-nitrogen benefits. Included among these is the input of symbiotically-fixed N from the remaining legume residues following grain harvest. However, the contribution of fixed-N to the soil system can be underestimated due to inadequate physical recovery of roots and unaccounted N released from living legume roots (rhizodeposition) during crop growth. This paper reports on N partitioning in pea and canola plants using 15N stable isotope methods to track N from the plant into the soil. Results illustrate the importance of accounting for below-ground N, particularly rhizodeposit N, as it accounted for more of the total N that remained in the residues compared to the above-ground residues including straw and chaff. Preliminary results also indicate different allocation of plant N between canola and pea with potential implications for N cycling between these two crops. | en_US |
| dc.description.version | Non-Peer Reviewed | |
| dc.identifier.uri | http://hdl.handle.net/10388/9302 | |
| dc.language.iso | en | en_US |
| dc.relation.ispartof | Soils and Crops Workshop | |
| dc.rights | Attribution-NonCommercial-NoDerivs 2.5 Canada | * |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/2.5/ca/ | * |
| dc.subject | nitrogen balance | en_US |
| dc.subject | rhizodeposition | en_US |
| dc.subject | roots | en_US |
| dc.subject | pea | en_US |
| dc.subject | canola | en_US |
| dc.subject | 15N isotope techniques | en_US |
| dc.title | Considering belowground nitrogen of crops grown in prairie agroecosystems | en_US |
| dc.type | Presentation | en_US |