Abstract
Two field experiments were done to determine if simple mechanical selection for seed size in soybean (Glycine max L. Merr.) could improve emergence and yield in short-season regions. Stacked screens with round holes 7.54, 7.14, 6.35 and 5.95 mm in diameter classified seeds into large, medium, small, and unscreened sizes. In exp. 1, small seeds resulted in lower yield than medium, large and unscreened seeds in two out of three cultivars, while in the third cultivar small seeds yielded less than the medium and large seed sizes, but were not significantly different from the unscreened size. In exp. 2, soil texture and seed size had a variable influence on seed emergence, which did not translate into consistent significant yield differences. Future research into mechanically removing small seeds from commercial seed lots is warranted in the short-season region. Key words: Seed size, soil texture, soybean, Glycine max L. Merr.
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Claims 6
Claim · model-written summary
In experiment 1, small soybean seeds gave lower yield than medium, large and unscreened seeds in two of three cultivars.
- Taxon
- soybean
Glycine maxt0 - Treatment
- small seedse1
- Outcome
- yielde1
- Direction
- lowere1
- Qualifier
- two out of three cultivarse1
- Comparator
- medium, large and unscreened seedse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e1“small seeds resulted in lower yield than medium, large and unscreened seeds in two out of three cultivars”
Claim · model-written summary
In the third cultivar, small soybean seeds yielded less than medium and large seed sizes.
- Taxon
- soybeanGlycine maxt0
- Treatment
- small seedse1
- Outcome
- yieldede1
- Direction
- lesse1
- Qualifier
- in the third cultivare1
- Comparator
- the medium and large seed sizese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e1“in the third cultivar small seeds yielded less than the medium and large seed sizes, but were not significantly different from the unscreened size”
Claim · model-written summary
In the third cultivar, small soybean seeds did not differ significantly in yield from the unscreened seed size.
- Taxon
- soybeanGlycine maxt0
- Treatment
- small seedse1
- Outcome
- yieldede1
- Direction
- not significantly differente1
- Qualifier
- in the third cultivare1
- Comparator
- the unscreened sizee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e1“in the third cultivar small seeds yielded less than the medium and large seed sizes, but were not significantly different from the unscreened size”
Claim · model-written summary
In experiment 2, soil texture and seed size had a variable influence on soybean seed emergence.
- Taxon
- soybeanGlycine maxt0
- Treatment
- soil texture and seed sizee1
- Outcome
- seed emergencee1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e1“soil texture and seed size had a variable influence on seed emergence, which did not translate into consistent significant yield differences”
Claim · model-written summary
The variable influence on emergence did not translate into consistent significant yield differences in experiment 2.
- Taxon
- soybeanGlycine maxt0
- Treatment
- soil texture and seed sizee1
- Outcome
- yield differencese1
- Direction
- did not translate into consistent significante1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e1“soil texture and seed size had a variable influence on seed emergence, which did not translate into consistent significant yield differences”
Claim · model-written summary
The authors state that future research on mechanically removing small seeds from commercial seed lots is warranted in the short-season region.
- Taxon
- soybeanGlycine maxt0
- Outcome
- mechanically removing small seeds from commercial seed lotse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e1“Future research into mechanically removing small seeds from commercial seed lots is warranted in the short-season region”
The same questions in other papers
soil · yield · Glycine max (soybean)Positive and negative results
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- positive
- positive
- positive
3 papers more in this group
See all 7 papers →property · yield · Glycine max (soybean)Positive and negative results
4 papers in the same direction as this paper · 3 in the opposite direction
- positive
- no effect
- no effect
4 papers more in this group
See all 8 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.