Claim · model-written summary
V4 glyphosate alone and sequential treatments gave at least 90% control of both weeds after 14 weeks.
- Taxon
- soybean
Glycine maxe0 - Treatment
- V4 alone treatment and sequential applicationse0
- Outcome
- Control of both speciese0
- Value
- at least 90%e0
- Qualifier
- at 14 wk after emergencee0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Control of both species at 14 wk after emergence was at least 90% following the V4 alone treatment and sequential applications, with no differences in control among soybean populations.”
Title
JASON K. NORSWORTHY; LAWRENCE R. OLIVER Weed Technology 2002. doi:10.1614/0890-037x(2002)016[0007:eoisgm]2.0.co;2
Other claims from this paper (12)
- Intervention effect Glyphosate increased moisture availability for dryland soybean during dry periods by controlling weeds.
- Intervention effect Increasing soybean density increased pitted morningglory control under V2 glyphosate.
- Intervention effect Increasing soybean density increased hemp sesbania control under V2 glyphosate.
- Observation Weed control after V4 or sequential glyphosate applications did not differ among soybean populations.
- Observation Untreated irrigated hemp sesbania produced up to 32 million seeds per hectare in 1999.
- Intervention effect Irrigation did not influence pitted morningglory seed production.
- Observation Untreated pitted morningglory produced at most one million seeds per hectare in 1998.
- Intervention effect Three glyphosate applications reduced pitted morningglory seed production to 9,000 seeds per hectare.
- Intervention effect Three glyphosate applications eliminated hemp sesbania seed production.
- Intervention effect Irrigated soybean yielded 1,297 kg per hectare more than dryland soybean.
- Intervention effect Increasing soybean density from 247,000 to 729,000 plants per hectare improved yield by 416 kg per hectare.
- Recommendation The authors recommend V4 alone or sequential glyphosate applications to maximize drill-seeded soybean yield at the studied weed densities.