Abstract
Field studies were conducted on a Crowley silt loam (Typic Albaqualf) soil to evaluate the potential for direct seeding of soybeans (Glycine max L. Merr.) after wheat (Triticum aestivum L.). Soybean yields, averaged over locations and years (1980–1982), were similar [2,110 versus 2,042 kilograms per hectare (31.4 versus 30.4 bushels/acre)] for conventional seedings and no-till seedings following wheat. Soybean stands also were comparable in conventional and no-till plantings. Weed competition was highest in 1981 where straw was cut high [46–51 centimeters (18–20 inches)] and spread, cut low [15–20 cm (6–8 in)] and burned, and cut low and removed; intermediate where straw was cut low and spread; and lowest where straw was incorporated (conventional seedbed preparation). Weed competition was minimal in all straw residue treatments in 1982. Soybean yields and plant populations were similar for the straw residue treatments in both years.
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Claims 8
Claim · model-written summary
Conventional and no-till soybean seedings had similar yields, 2,110 versus 2,042 kilograms per hectare.
- Taxon
- Soybean
Glycine maxe0 - Treatment
- no-till seedingse0
- Outcome
- Soybean yieldse0
- Direction
- similare0
- Value
- 2,110 versus 2,042 kilograms per hectaree0
- Comparator
- conventional seedingse0
- Setting
- locations and years (1980–1982)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean yields, averaged over locations and years (1980–1982), were similar [2,110 versus 2,042 kilograms per hectare (31.4 versus 30.4 bushels/acre)] for conventional seedings and no-till seedings following wheat”
e1“Soybean yields, averaged over locations and years (1980–1982), were similar [2,110 versus 2,042 kilograms per hectare (31.4 versus 30.4 bushels/acre)] for conventional seedings and no-till seedings following wheat”
e2“Soybean yields, averaged over locations and years (1980–1982), were similar [2,110 versus 2,042 kilograms per hectare (31.4 versus 30.4 bushels/acre)] for conventional seedings and no-till seedings following wheat”
Claim · model-written summary
Soybean stands were comparable between conventional and no-till plantings.
- Taxon
- SoybeanGlycine maxe0
- Treatment
- no-till plantingse0
- Outcome
- Soybean standse0
- Direction
- comparablee0
- Comparator
- conventionale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean stands also were comparable in conventional and no-till plantings”
e1“Soybean stands also were comparable in conventional and no-till plantings”
e2“Soybean stands also were comparable in conventional and no-till plantings”
Claim · model-written summary
In 1981, weed competition was highest under three listed straw cutting and disposal treatments.
- Taxon
- soybeansGlycine maxt0
- Treatment
- straw was cut high [46–51 centimeters (18–20 inches)] and spreade0
- Interactor
- Weede0weed
- Outcome
- Weed competitione0
- Direction
- higheste0
- Setting
- 1981e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weed competition was highest in 1981 where straw was cut high [46–51 centimeters (18–20 inches)] and spread, cut low [15–20 cm (6–8 in)] and burned, and cut low and removed”
e1“Weed competition was highest in 1981 where straw was cut high [46–51 centimeters (18–20 inches)] and spread, cut low [15–20 cm (6–8 in)] and burned, and cut low and removed”
e2“Weed competition was highest in 1981 where straw was cut high [46–51 centimeters (18–20 inches)] and spread, cut low [15–20 cm (6–8 in)] and burned, and cut low and removed”
t0“soybeans”
Claim · model-written summary
In 1981, weed competition was intermediate when straw was cut low and spread.
- Taxon
- soybeansGlycine maxt0
- Treatment
- straw was cut low and spreade0
- Outcome
- intermediatee0
- Direction
- intermediatee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“intermediate where straw was cut low and spread”
e1“intermediate where straw was cut low and spread”
e2“intermediate where straw was cut low and spread”
e3“Weed competition was highest in 1981”
t0“soybeans”
Claim · model-written summary
In 1981, weed competition was lowest when straw was incorporated.
- Taxon
- soybeansGlycine maxt0
- Treatment
- straw was incorporatede0
- Interactor
- Weede0weed
- Outcome
- Weed competitione0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weed competition was highest in 1981 where straw was cut high [46–51 centimeters (18–20 inches)] and spread, cut low [15–20 cm (6–8 in)] and burned, and cut low and removed; intermediate where straw was cut low and spread; and lowest where straw was incorporated (conventional seedbed preparation)”
e1“Weed competition was highest in 1981 where straw was cut high [46–51 centimeters (18–20 inches)] and spread, cut low [15–20 cm (6–8 in)] and burned, and cut low and removed; intermediate where straw was cut low and spread; and lowest where straw was incorporated (conventional seedbed preparation)”
e2“Weed competition was highest in 1981 where straw was cut high [46–51 centimeters (18–20 inches)] and spread, cut low [15–20 cm (6–8 in)] and burned, and cut low and removed; intermediate where straw was cut low and spread; and lowest where straw was incorporated (conventional seedbed preparation)”
t0“soybeans”
Claim · model-written summary
Weed competition was minimal under all straw residue treatments in 1982.
- Taxon
- soybeansGlycine maxt0
- Interactor
- Weede0weed
- Outcome
- Weed competitione0
- Direction
- minimale0
- Setting
- 1982e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weed competition was minimal in all straw residue treatments in 1982”
e1“Weed competition was minimal in all straw residue treatments in 1982”
e2“Weed competition was minimal in all straw residue treatments in 1982”
t0“soybeans”
Claim · model-written summary
Soybean yields were similar across straw residue treatments in both years.
- Taxon
- SoybeanGlycine maxe0
- Treatment
- straw residue treatmentse0
- Outcome
- Soybean yieldse0
- Direction
- similare0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean yields and plant populations were similar for the straw residue treatments in both years”
e1“Soybean yields and plant populations were similar for the straw residue treatments in both years”
e2“Soybean yields and plant populations were similar for the straw residue treatments in both years”
Claim · model-written summary
Soybean plant populations were similar across straw residue treatments in both years.
- Taxon
- SoybeanGlycine maxe0
- Treatment
- straw residue treatmentse0
- Outcome
- plant populationse0
- Direction
- similare0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean yields and plant populations were similar for the straw residue treatments in both years”
e1“Soybean yields and plant populations were similar for the straw residue treatments in both years”
e2“Soybean yields and plant populations were similar for the straw residue treatments in both years”
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See all 390 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.