Abstract
Defoliations of 17, 33, 50, and 67% were made during periods of insect activity on soybeans at midbloom, pod-set, pod-fill, and on a continued basis from midbloom to pod-set. Foliage losses of 33% at bloom did not result in significant yield losses in any of 10 tests; 67% defoliation at pod-set, or on a continued basis from bloom to pod-set caused greatest losses; and 17% defoliation did not cause significant losses at any stage of growth or on a continued basis. Yield losses from defoliations at pod-fill were intermediate between those at bloom and pod-set. Yield reductions were generally accompanied by reductions in seed weight and protein content and increases in oil content. Seed germination was not affected. Although results were not affected significantly by date of planting and by use of irrigation or different varieties, there was a tendency toward generally lower yields at high production levels in the ‘Hampton’ variety after severe defoliations (50 and 67%) at bloom and pod-fill. It was concluded that foliage losses of 17 or 33% allowed additional light penetration to lower leaves, resulting in compensation by increased photosynthate production in these leaves.
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Claims 12
Claim · model-written summary
Foliage loss of 33% at bloom caused no significant yield loss in ten tests.
- Taxon
- soybeans
Glycine maxt0 - Treatment
- Foliage losses of 33% at bloome0
- Outcome
- yield lossese0
- Direction
- did not resulte0
- Value
- 33%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliage losses of 33% at bloom did not result in significant yield losses in any of 10 tests”
t0“Soybeans”
Claim · model-written summary
Defoliation of 67% at pod set caused the greatest yield losses.
- Taxon
- soybeansGlycine maxt0
- Treatment
- 67% defoliation at pod-sete0
- Outcome
- lossese0
- Direction
- greateste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“67% defoliation at pod-set, or on a continued basis from bloom to pod-set caused greatest losses”
t0“Soybeans”
Claim · model-written summary
Continued defoliation from bloom to pod set caused the greatest yield losses.
- Taxon
- soybeansGlycine maxt0
- Treatment
- on a continued basis from bloom to pod-sete0
- Outcome
- lossese0
- Direction
- greateste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on a continued basis from bloom to pod-set caused greatest losses”
t0“Soybeans”
Claim · model-written summary
Defoliation of 17% caused no significant yield loss at any stage.
- Taxon
- soybeansGlycine maxt0
- Treatment
- 17% defoliatione0
- Outcome
- lossese0
- Direction
- did not causee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“17% defoliation did not cause significant losses at any stage of growth or on a continued basis”
t0“Soybeans”
Claim · model-written summary
Pod fill defoliation produced intermediate yield losses between bloom and pod set.
- Taxon
- soybeansGlycine maxt0
- Treatment
- defoliations at pod-fille0
- Outcome
- Yield lossese0
- Direction
- intermediatee0
- Comparator
- those at bloom and pod-sete0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield losses from defoliations at pod-fill were intermediate between those at bloom and pod-set”
t0“Soybeans”
Claim · model-written summary
Yield reductions generally accompanied reduced seed weight.
- Taxon
- soybeansGlycine maxt0
- Outcome
- seed weighte0
- Direction
- reductionse0
- Qualifier
- generallye0
- Comparator
- Yield reductionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield reductions were generally accompanied by reductions in seed weight”
t0“Soybeans”
Claim · model-written summary
Yield reductions generally accompanied reduced protein content.
- Taxon
- soybeansGlycine maxt0
- Outcome
- protein contente0
- Direction
- reductionse0
- Comparator
- Yield reductionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield reductions were generally accompanied by reductions in seed weight and protein content”
t0“Soybeans”
Claim · model-written summary
Yield reductions generally accompanied increased oil content.
- Taxon
- soybeansGlycine maxt0
- Outcome
- oil contente0
- Direction
- increasese0
- Comparator
- Yield reductionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield reductions were generally accompanied by reductions in seed weight and protein content and increases in oil content”
t0“Soybeans”
Claim · model-written summary
Defoliation did not affect seed germination.
- Taxon
- soybeansGlycine maxt0
- Treatment
- Defoliationse1
- Outcome
- Seed germinatione0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed germination was not affected”
t0“Soybeans”
e1“Defoliations of 17, 33, 50, and 67%”
Claim · model-written summary
Planting date, irrigation and variety did not significantly modify results.
- Taxon
- soybeansGlycine maxt0
- Outcome
- resultse0
- Direction
- not affectede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“results were not affected significantly by date of planting and by use of irrigation or different varieties”
t0“Soybeans”
Claim · model-written summary
Hampton tended toward lower yields after severe defoliation at bloom and pod fill.
- Taxon
- soybeansGlycine maxt0
- Material
- ‘Hampton’e0
- Treatment
- severe defoliations (50 and 67%) at bloom and pod-fille0
- Outcome
- yieldse0
- Direction
- lowere0
- Qualifier
- high production levelse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“generally lower yields at high production levels in the ‘Hampton’ variety after severe defoliations (50 and 67%) at bloom and pod-fill”
t0“Soybeans”
Claim · model-written summary
Authors attributed compensation after 17% foliage loss to greater lower leaf photosynthate production.
- Taxon
- soybeansGlycine maxt0
- Treatment
- foliage losses of 17 or 33%e0
- Outcome
- increased photosynthate productione0
- Direction
- increasede0
- Qualifier
- additional light penetration to lower leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliage losses of 17 or 33% allowed additional light penetration to lower leaves, resulting in compensation by increased photosynthate production in these leaves”
t0“Soybeans”
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See all 110 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.