Abstract
Diverse crop rotations enable the best use of residual soil water and nutrients, thus decreasing necessary production inputs. Here, we determined the effect of cropping sequences on soil residual water and nutrients and the performance of subsequent wheat (Triticum aestivum L.). Nine rotation systems were evaluated at Swift Current, SK, and Brooks, AB, from 2010 to 2014. Pea (P, Pisum sativum L.) and lentil (L, Lens culinaris Medik.) as preceding crops before wheat (W) or the rotation systems with pea (P–P–P–W) or lentil (L–L–L–W) included more than once in the 4-yr rotations had the highest residual soil water and N in the 30–90 cm depth and continuous wheat (W–W–W–W) had the lowest. Preceding pea and lentil increased the grain yield of the subsequent wheat by 26% and 18%, respectively, as compared with continuous wheat. Variance partitioning of redundancy analysis revealed that soil residual water and residual N explained 12.4%–42.7% (average 30%) of the yield variation observed in the subsequent wheat, with the rest of the rotational benefits unexplainable by soil residual water and residual nutrients. Investigation of the factors other than soil water and nutrients that contribute to the succeeding wheat yield may further enhance the rotational effect.
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Claims 6
Claim · model-written summary
Repeated pea rotation had among the highest residual soil water and nitrogen.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- pea (P–P–P–W)e0
- Outcome
- residual soil water and Ne0
- Direction
- higheste0
Not reportedOrgan / stage
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rotation systems with pea (P–P–P–W) or lentil (L–L–L–W) included more than once in the 4-yr rotations had the highest residual soil water and N in the 30–90 cm depth”
t0“subsequent wheat (Triticum aestivum L.)”
Claim · model-written summary
Repeated lentil rotation had among the highest residual soil water and nitrogen.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- lentil (L–L–L–W)e0
- Outcome
- residual soil water and Ne0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rotation systems with pea (P–P–P–W) or lentil (L–L–L–W) included more than once in the 4-yr rotations had the highest residual soil water and N in the 30–90 cm depth”
t0“subsequent wheat (Triticum aestivum L.)”
Claim · model-written summary
Continuous wheat had the lowest residual soil water and nitrogen.
- Taxon
- wheatTriticum aestivume0
- Treatment
- continuous wheat (W–W–W–W)e0
- Outcome
- loweste0
- Direction
- loweste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“continuous wheat (W–W–W–W) had the lowest”
Claim · model-written summary
Pea preceding wheat raised subsequent grain yield by 26% relative to continuous wheat.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Preceding peae0
- Outcome
- grain yield of the subsequent wheate0
- Direction
- increasede0
- Value
- 26%e0
- Comparator
- continuous wheate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Preceding pea and lentil increased the grain yield of the subsequent wheat by 26% and 18%, respectively, as compared with continuous wheat”
Claim · model-written summary
Lentil preceding wheat raised subsequent grain yield by 18% relative to continuous wheat.
- Taxon
- wheatTriticum aestivume0
- Treatment
- lentile0
- Outcome
- grain yield of the subsequent wheate0
- Direction
- increasede0
- Value
- 18%e0
- Comparator
- continuous wheate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Preceding pea and lentil increased the grain yield of the subsequent wheat by 26% and 18%, respectively, as compared with continuous wheat”
Claim · model-written summary
Residual soil water and nitrogen explained 12.4%–42.7% of wheat yield variation, averaging 30%.
- Taxon
- wheatTriticum aestivume0
- Compound
- residual Ne0
- Outcome
- yield variation observed in the subsequent wheate0
- Value
- 12.4%–42.7%e0
- Qualifier
- average 30%e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil residual water and residual N explained 12.4%–42.7% (average 30%) of the yield variation observed in the subsequent wheat”
The same questions in other papers
Lens culinaris · yield · Triticum aestivum (wheat)Positive and negative results
8 papers in the same direction as this paper · 4 in the opposite direction
- no effect
- no effect
- no effect
9 papers more in this group
See all 13 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.