Claim · model-written summary
Tactically grazing when grain yield is below a critical level could increase economic returns by more than A$50/ha in 30–40% of years.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- tactically grazing when grain yield is below a critical levele3
- Outcome
- economic returnse3
- Direction
- increasede3
- Value
- more than A$50/ha in 30–40% of yearse3
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sacrificial grazing of wheat crops: identifying tactics and opportunities in Western Australia’s grainbelt using simulation approaches”
e3“by tactically grazing when grain yield is below a critical level economic returns could be increased by more than A$50/ha in 30–40% of years”
Title
Lindsay W. Bell; John N. G. Hargreaves; Roger A. Lawes; et al. Animal Production Science 2009. doi:10.1071/an09014
Other claims from this paper (9)
- Intervention effect Livestock production increased as grazing of the wheat crop was delayed; stocking rate had little impact at this time.
- Intervention effect Grazing earlier needed lighter stocking rates but had little benefit for animal performance.
- Intervention effect Grazing a wheat crop could be more profitable 40–75% of the time on poorer soil types in lower rainfall environments under average commodity prices.
- Intervention effect Tactically grazing when grain yield is below a critical level could increase long-term average revenues by A$30/ha.year.
- Observation The critical grain yield for tactical grazing ranged from 1.3 to 1.7 t/ha on shallow gravel soil.
- Observation The critical grain yield for tactical grazing ranged from 1.9 to 2.2 t/ha on a deep sand.
- Intervention effect Grazing was rarely a better option than grain in higher rainfall environments and on better soil types, unless livestock prices were high relative to grain.
- Method / resource Combining crop simulation with partial budgets was useful for developing simple management rules for a complex system.
- Recommendation Tactical use of a wheat crop for forage in situations with low grain yield prospects is a major opportunity to increase profitability.