Claim · model-written summary
Strict summer weed control produced high investment returns, ranging 6–1328%.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- strict summer weed controle0
- Outcome
- return on investmente0
- Direction
- highe0
- Value
- 6–1328%e0
- Qualifier
- mean 733%e0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“strict summer weed control generated high return on investment (range 6–1328%; mean 733%)”
t0“wheat”
Title
Re-evaluating the contribution of summer fallow rain to wheat yield in southern Australia
J. R. Hunt; J. A. Kirkegaard Crop and Pasture Science 2011. doi:10.1071/cp11268
Other claims from this paper (9)
- Observation Summer fallow rain contributed an average 1.0 t/ha, or 33%, to attainable wheat yield.
- Mechanism Yield gains reflected increased water use and water-use efficiency through higher harvest index.
- Association Summer fallow rain yield contribution varied significantly with rainfall distribution and soil type.
- Observation In central-west New South Wales, summer rain contributed up to 2.0 t/ha or 72% of mean yield.
- Observation In north-western Western Australia, summer rain contributed as little as 0.1 t/ha or 3% of mean yield.
- Observation Simulated yield contribution of summer rain varied significantly among years at every location.
- Association Soils with higher surface water-holding capacity tended to reduce summer fallow efficiency.
- Observation Failure to obtain weed-control investment returns occurred in 1–70% of years across sites.
- Observation The summer share of annual rainfall increased in some locations over the previous 10 years.