Claim · model-written summary
Reduced-tillage soybean yielded 2.8 bu/acre less than complete tillage.
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e1“This study was conducted to determine the influence of planting date, row width, and seeding rate on soybean grain yields”
e2“Yields in NT were 5.3 and in RT 2.8 bu/acre lower than in CT”
Title
Soybean Planting Date, Row Width, and Seeding Rate Response in Three Tillage Systems
E.S. Oplinger; B.D. Philbrook jpa 1992. doi:10.2134/jpa1992.0094
Other claims from this paper (9)
- Intervention effect No-tillage soybean yielded 5.3 bu/acre less than complete tillage.
- Intervention effect Solid-seeded soybeans at 8 in. yielded 3.1 bu/acre more than soybeans in 30 in. wide rows.
- Intervention effect The yield advantage of solid seeding reversed at the latest planting dates in complete and reduced tillage.
- Intervention effect Plant emergence was 13% greater in complete tillage than in reduced tillage.
- Intervention effect Plant emergence was 15% greater in complete tillage than in no-tillage.
- Intervention effect At high seeding rates, no-tillage and reduced-tillage systems needed an additional 50 000 seeds/acre to match complete tillage stands.
- Intervention effect Averaged across seeding rates, complete tillage outyielded no-tillage and reduced tillage by 4.5 bu/acre.
- Intervention effect At equivalent final stands, complete-tillage yields were less than 3 bu/acre higher than reduced or no-tillage yields.
- Recommendation Soybean seeding rates in no-tillage and reduced-tillage systems should be 15% to 32% higher than complete-tillage rates.