Claim · model-written summary
Deep tillage did not affect soybean grain yield over three years.
- Taxon
- soybean
Glycine maxt0 - Treatment
- deep tillagee0
- Outcome
- grain yieldse0
- Direction
- did not affecte0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“During the three-year experiment, deep tillage did not affect grain yields.”
t0“SOYBEAN”
Title
SOYBEAN YIELD AND WATER EXTRACTION IN RESPONSE TO DEEP TILLAGE AND HIGH SOIL ALUMINUM
Larry C. Purcell; Terry C. Keisling; Clay H. Sneller Communications in Soil Science and Plant Analysis 2002. doi:10.1081/css-120015917
Other claims from this paper (6)
- Observation R93-5455 yielded more than Hutcheson in 76-cm rows under severe drought.
- Observation The two cultivars had similar yield in 19-cm rows.
- Intervention effect Yield in 19-cm rows exceeded yield in 76-cm rows.
- Observation R93-5455 had higher upper-soil root counts than Hutcheson in 76-cm rows.
- Mechanism The authors attributed the yield advantage of R93-5455 in wide rows to denser roots and greater upper-soil water extraction.
- Mechanism Narrower spacing and increased population density compensated for low rooting density of Hutcheson in wide rows.