Claim · model-written summary
Higher seeding rate had infrequent and inconsistent effects across crop, year and location combinations.
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingDirectionValueQualifier
Verbatim
e0“Increased seeding rate, independent of the different herbicide applications, had infrequent and inconsistent effects among the crop by year by location combinations.”
t0“Crop”
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 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 With no herbicide, cereal crop yield at Saskatoon fell 40%.
- 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.