Claim · model-written summary
Sulphate of ammonia produced small yield increases that were uneconomic on average.
- Taxon
- barley
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Hordeum vulgaree1 - Treatment
- sulphate of ammoniae0
- Outcome
- yielde0
- Direction
- increasese0
- Qualifier
- on average, these increases were uneconomice0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
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Verbatim
e0“Nitrogen fertilizers (urea and sulphate of ammonia) both produced small yield increases but, on average, these increases were uneconomic.”
e1“either wheat or barley”
Title
ER Barry; RH Brown; BR Elliott Australian Journal of Experimental Agriculture and Animal Husbandry 1974. doi:10.1071/ea9740566
Other claims from this paper (12)
- Intervention effect Resowing damaged wheat crops did not produce higher yields.
- Intervention effect Resowing damaged barley crops did not produce higher yields.
- Intervention effect Cyst populations were lower on resown crops, especially barley.
- Intervention effect Urea produced small yield increases that were uneconomic on average.
- Intervention effect Sulphate of ammonia increased nematode cyst populations, especially at seeding.
- Intervention effect Urea had only a marginal influence on nematode cyst numbers.
- Observation Barley cultivars had the highest yields on nematode-infested soil.
- Observation Wheat cultivar Insignia yielded below barley and above oats on infested soils.
- Observation Oat cultivars had the poorest yields on nematode-infested soil.
- Observation Post-oat cyst populations were lower than post-barley populations.
- Observation Post-barley cyst populations were lower than post-wheat populations.
- Observation Differences in cyst populations among preceding cereals carried into a subsequent wheat crop.