Claim · model-written summary
With no herbicide, cereal crop yield at Saskatoon fell 40%.
- Taxon
- cereal cropse0
- Treatment
- herbicides were not appliede0
- Outcome
- yielde0
- Direction
- reductione0
- Value
- 40%e0
- Setting
- Saskatoone0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorQualifier
Verbatim
e0“herbicides were not applied to cereal crops at Saskatoon (40% yield reduction)”
Title
Appropriate Crop Seeding Rate When Herbicide Rate is Reduced1
KEN J. KIRKLAND; F.A. HOLM; F. CRAIG STEVENSON Weed Technology 2000. doi:10.1614/0890-037x(2000)014[0692:acsrwh]2.0.co;2
Other claims from this paper (12)
- Intervention effect Increasing seeding rate did not affect weed weights, yield or net return responses to reduced or absent herbicide.
- Intervention effect Higher seeding rate had infrequent and inconsistent effects across crop, year and location combinations.
- Intervention effect Absent or reduced herbicides generally allowed more broadleaf and grass weed growth.
- Intervention effect Absent or reduced herbicides generally reduced crop yield.
- Intervention effect Absent or reduced herbicides generally lowered net returns.
- Intervention effect Half-rate herbicide reduced wheat yield 16% compared with higher rates at two locations.
- Intervention effect In 1996, lentil yield and net returns did not respond to herbicide application or rate.
- Intervention effect In 1997, lentil yield and net returns fell 11% at three-quarter versus full rate.
- Intervention effect In 1997, lentil yield and net returns fell 22% at half versus three-quarter rate.
- Intervention effect In 1997, lentil yield and net returns fell 46% with no herbicide versus half rate.
- Intervention effect Reduced herbicide rates did not affect cereal net returns.
- Recommendation Below-label herbicide rates may be economically viable in certain crops.