Abstract
SUMMARY Two field experiments examined the influence of soil nitrogen on grain yield, wateruse efficiency and residual nitrate accumulation of four winter grain legumes in a legume–fallow–wheat rotation. In the first experiment, conducted on a clay soil with a high total soil nitrogen content (0·194%), the three legumes Cicer arietinum, Vicia faba and Pisum sativum gave similar yields, with Lupinus angustifolius showing poor yields. Water-use efficiencies followed similar trends to the grain yields. Wheat yields and concentration of nitrogen in the grain, following a fallow after the legume crops, showed no differences from a full 2-year fallow. In the second experiment on a low fertility soil (0·081 % total soil nitrogen), Cicer arietinum gave the highest yield and the greatest water-use efficiency. All legumes and long fallow resulted in a similar increase in wheat yield when compared with a wheat-fallow-wheat rotation. The legume crops generally increased soil nitrate status between their sowing and the sowing of a wheat crop 2 years later; such increases were greatest with Pisum sativum at the high fertility site, with a suggestion of the reverse occurring at the low fertility site.
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Claims 10
Claim · model-written summary
Cicer arietinum, Vicia faba and Pisum sativum had similar yields on high-nitrogen clay soil.
- Taxon
- Cicer arietinum
Cicer arietinume0 - Material
- Cicer arietinum, Vicia faba and Pisum sativume0
- Outcome
- yieldse0
- Direction
- similare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the three legumes Cicer arietinum, Vicia faba and Pisum sativum gave similar yields, with Lupinus angustifolius showing poor yields.”
Claim · model-written summary
Lupinus angustifolius had poor yield on the high-nitrogen soil.
- Taxon
- Lupinus angustifolius
.jpg?width=60)
Lupinus angustifoliuse0 - Outcome
- yieldse0
- Direction
- poore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“the three legumes Cicer arietinum, Vicia faba and Pisum sativum gave similar yields, with Lupinus angustifolius showing poor yields.”
Claim · model-written summary
Water-use efficiency followed the yield trends.
Verbatim
e0“Water-use efficiencies followed similar trends to the grain yields.”
t0“grain legume”
Claim · model-written summary
Wheat yield following legume fallow did not differ from full two-year fallow.
- Taxon
- Wheat
Triticum aestivume0 - Treatment
- following a fallow after the legume cropse0
- Outcome
- Wheat yieldse0
- Direction
- no differencese0
- Comparator
- full 2-year fallowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat yields and concentration of nitrogen in the grain, following a fallow after the legume crops, showed no differences from a full 2-year fallow.”
Claim · model-written summary
Wheat grain nitrogen concentration following legume fallow did not differ from full two-year fallow.
- Taxon
- WheatTriticum aestivume0
- Treatment
- following a fallow after the legume cropse0
- Outcome
- concentration of nitrogen in the graine0
- Direction
- no differencese0
- Comparator
- full 2-year fallowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat yields and concentration of nitrogen in the grain, following a fallow after the legume crops, showed no differences from a full 2-year fallow.”
Claim · model-written summary
Cicer arietinum gave the highest yield on low-fertility soil.
- Taxon
- Cicer arietinumCicer arietinume0
- Outcome
- yielde0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cicer arietinum gave the highest yield and the greatest water-use efficiency.”
Claim · model-written summary
Cicer arietinum gave the greatest water-use efficiency on low-fertility soil.
- Taxon
- Cicer arietinumCicer arietinume0
- Outcome
- water-use efficiencye0
- Direction
- greateste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cicer arietinum gave the highest yield and the greatest water-use efficiency.”
Claim · model-written summary
Legumes and long fallow similarly increased subsequent wheat yield relative to wheat-fallow-wheat rotation.
- Taxon
- wheatTriticum aestivume0
- Treatment
- All legumes and long fallowe0
- Outcome
- wheat yielde0
- Direction
- increasee0
- Comparator
- wheat-fallow-wheat rotatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All legumes and long fallow resulted in a similar increase in wheat yield when compared with a wheat-fallow-wheat rotation.”
Claim · model-written summary
Legume crops generally increased soil nitrate status over the rotation.
Not reportedComparator
Verbatim
e0“The legume crops generally increased soil nitrate status between their sowing and the sowing of a wheat crop 2 years later; such increases were greatest with Pisum sativum at the high fertility site, with a suggestion of the reverse occurring at the low fertility site.”
Claim · model-written summary
Pisum sativum had the greatest soil nitrate increase at the high-fertility site.
- Taxon
- Pisum sativum
Lathyrus oleraceuse0 - Outcome
- soil nitrate statuse0
- Direction
- increases were greateste0
- Setting
- high fertility sitee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The legume crops generally increased soil nitrate status between their sowing and the sowing of a wheat crop 2 years later; such increases were greatest with Pisum sativum at the high fertility site, with a suggestion of the reverse occurring at the low fertility site.”
The same questions in other papers
rotation · molecular: metabolites · Triticum aestivum (wheat)Positive and negative results
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- positive
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252 papers in the same direction as this paper · 83 in the opposite direction · 9 reporting no difference from an alternative
- no effect
- negative
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See all 345 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.