A landscape-scale assessment of the nitrogen and non-nitrogen benefits of pea in a crop rotation
dc.contributor.author | Stevenson, F.C. | |
dc.contributor.author | van Kessel, C. | |
dc.date.accessioned | 2018-09-10T23:42:19Z | |
dc.date.available | 2018-09-10T23:42:19Z | |
dc.date.issued | 1996-02-22 | |
dc.description.abstract | The inclusion of a pulse crop in a rotation could influence the seed yield of a succeeding cereal crop in different slope positions of a field. A landscape-scale study was established in 1993 to examine the N contribution, and the N and non-N rotation benefits, of pea to wheat across a hummocky terrain. Wheat seed yield in the second phase (1994) of the pea-wheat and wheat-wheat rotations was reduced by about 20% in the depressions as compared to the shoulders and footslopes. Soil N availability throughout the growing season was responsible for the landform effect on wheat seed yield in the pea-wheat rotation. The N from pea residue, accumulated by the subsequent wheat crop, met about 5% of its requirements. This response that did not vary across the landscape. Spatial patterns that were detected for N, fixation apparently did not relate to the rate of net N mineralization and, in particular, the greater soil N availability in the depressions of the pea-wheat rotation. In the wheat-wheat rotation, grassy weed infestation in the depressions was the most important landscape-scale control on seed yield. The rotation effect of pea on the succeeding wheat crop apparently shifted the landscape-scale control from a non-N to an N related factor. | en_US |
dc.description.version | Non-Peer Reviewed | |
dc.identifier.uri | http://hdl.handle.net/10388/10299 | |
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.title | A landscape-scale assessment of the nitrogen and non-nitrogen benefits of pea in a crop rotation | en_US |
dc.type | Presentation | en_US |
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