Abstract
Following two to three years of competition between lucerne, annual medics, or field peas with skeleton weed at six sites in the Mallee, Victoria, a wheat crop was grown on fallow at each site between 1966 and 1968 to determine the effect on the weed populations and to measure the relative ability of the legumes to improve the nitrogen content of the soil. Skeleton weed populations declined throughout both the fallow and cropping periods on all treatments, and the possible mechanisms involved are discussed. All legumes increased the nitrogen status of the soil at the different sites, which led to higher wheat yield and grain protein content. There was limited response to applied nitrogen fertilizer, except on the volunteer pasture treatments. Lucerne and the annual medics were similar in their effects on soil nitrogen. However, moisture conservation during the fallow period was more effective following lucerne in some years, owing to the lower skeleton weed populations, and resulted in much higher grain yields in the drought year of 1967.
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Claims 9
Claim · model-written summary
Skeleton weed populations declined through fallow and cropping periods in all treatments.
- Taxon
- wheat
Triticum aestivumt0 - Interactor
- Skeleton weede0weed
- Outcome
- Skeleton weed populationse0
- Direction
- declinede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat crop”
e0“Skeleton weed populations declined throughout both the fallow and cropping periods on all treatments”
Claim · model-written summary
All legumes increased soil nitrogen status.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- All legumese0
- Outcome
- nitrogen status of the soile0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat crop”
e0“All legumes increased the nitrogen status of the soil at the different sites”
Claim · model-written summary
Legume-enhanced soil nitrogen led to higher wheat yield.
- Taxon
- wheatTriticum aestivume0
- Treatment
- All legumese0
- Outcome
- wheat yielde0
- Direction
- highere0
- Qualifier
- nitrogen status of the soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All legumes increased the nitrogen status of the soil at the different sites, which led to higher wheat yield and grain protein content”
Claim · model-written summary
Legume-enhanced soil nitrogen led to higher wheat grain protein content.
- Taxon
- wheatTriticum aestivume0
- Treatment
- All legumese0
- Outcome
- grain protein contente0
- Direction
- highere0
- Qualifier
- nitrogen status of the soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All legumes increased the nitrogen status of the soil at the different sites, which led to higher wheat yield and grain protein content”
Claim · model-written summary
Applied nitrogen fertilizer elicited limited response except under volunteer pasture treatments.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- applied nitrogen fertilizere0
- Outcome
- limited responsee0
- Qualifier
- except on the volunteer pasture treatmentse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat crop”
e0“There was limited response to applied nitrogen fertilizer, except on the volunteer pasture treatments”
Claim · model-written summary
Lucerne and annual medics had similar effects on soil nitrogen.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Lucernee0
- Outcome
- soil nitrogene0
- Direction
- similare0
- Comparator
- annual medicse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat crop”
e0“Lucerne and the annual medics were similar in their effects on soil nitrogen”
Claim · model-written summary
Moisture conservation in fallow was more effective after lucerne in some years.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- following lucernee0
- Outcome
- moisture conservatione0
- Direction
- more effectivee0
- Qualifier
- in some yearse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat crop”
e0“moisture conservation during the fallow period was more effective following lucerne in some years”
Claim · model-written summary
Lower skeleton weed populations following lucerne contributed to moisture conservation.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- following lucernee0
- Interactor
- skeleton weede0weed
- Outcome
- moisture conservatione0
- Direction
- more effectivee0
- Qualifier
- lower skeleton weed populationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat crop”
e0“moisture conservation during the fallow period was more effective following lucerne in some years, owing to the lower skeleton weed populations”
Claim · model-written summary
Moisture conservation after lucerne resulted in much higher wheat grain yields during the 1967 drought.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- following lucernee0
- Outcome
- grain yieldse0
- Direction
- much highere0
- Qualifier
- drought year of 1967e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat crop”
e0“moisture conservation during the fallow period was more effective following lucerne in some years, owing to the lower skeleton weed populations, and resulted in much higher grain yields in the drought year of 1967”
The same questions in other papers
Medicago sativa · soil: chemistry · Triticum aestivum (wheat)Positive and negative results
1 reporting no difference from an alternative
- positive
Medicago sativa · soil: physics · Triticum aestivum (wheat)Results agree
2 papers in the same direction as this paper
- positive
- positive
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.