Paper · 1993 · Weed Technology

Net Returns from Stale Seedbed Plantings of Soybean (Glycine max) on Clay Soil

Larry G. Heatherly; Richard A. Wesley; C. Dennis Elmore; et al.

5
claims
8
verbatim quotes
26
citations
2
research areas
—
Not open access

Abstract

Field studies were conducted for three years in each of two successive experiments and analyzed to determine net return from stale seedbed plantings of soybean. Treatments in the first experiment were early May and late May/early June plantings in seedbeds that had combinations of tillage at various times between harvest and planting, incorporation of trifluralin, or no preplant tillage. Treatments in the second experiment were irrigated and nonirrigated stale or no-till seedbed plantings with weed control treatments that included POST cultivation plus combinations of preplant foliar-applied (PFA) glyphosate, PRE metribuzin, and POST herbicides. Results indicate that 1) early planting of soybean resulting from use of a stale seedbed will result in higher net returns when irrigation is used, 2) use of a wheat cover crop does not justify the expense, 3) soybean planted in a no-till seedbed will result in net return similar to that from plantings in fall-tilled, spring-tilled, or prepared seedbeds, 4) use of only a PFA herbicide plus POST cultivation in a stale seedbed planting where competitive weeds such as common cocklebur appear later will result in a significant reduction in net returns, and 5) use of PRE herbicides in conjunction with PFA herbicide and POST cultivation in a stale seedbed planting will result in the highest net return with the least input.

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Claims 5

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Early soybean planting with a stale seedbed yielded higher net returns when irrigation was used.

Taxon
soybeanGlycine maxe0
Treatment
early planting of soybean resulting from use of a stale seedbede0
Outcome
net returnse0
Direction
highere0
Qualifier
when irrigation is usede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“early planting of soybean resulting from use of a stale seedbed will result in higher net returns when irrigation is used”

✓ located verbatim in the source · abstract, characters 679–800 · show in text ↑
Recommendationauthor interpretationoriginal resultnegativebasis n/a

Claim · model-written summary

A wheat cover crop did not justify its expense in soybean stale-seedbed production.

Taxon
SoybeanGlycine maxt0
Outcome
use of a wheat cover crop does not justify the expensee0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“use of a wheat cover crop does not justify the expense”

✓ located verbatim in the source · abstract, characters 805–859 · show in text ↑
t0

“Soybean”

✓ located verbatim in the source · title, characters 44–51 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

No-till soybean seedbeds gave net returns similar to fall-tilled, spring-tilled or prepared seedbeds.

Taxon
soybeanGlycine maxe0
Treatment
no-till seedbede0
Outcome
net returne0
Direction
similare0
Comparator
fall-tilled, spring-tilled, or prepared seedbedse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“soybean planted in a no-till seedbed will result in net return similar to that from plantings in fall-tilled, spring-tilled, or prepared seedbeds”

✓ located verbatim in the source · abstract, characters 864–1009 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Preplant foliar herbicide plus postplant cultivation in stale seedbeds significantly reduced soybean net returns when competitive weeds emerged later.

Taxon
SoybeanGlycine maxt0
Treatment
PFA herbicide plus POST cultivatione0
Interactor
common cocklebure0weed
Outcome
net returnse0
Direction
reductione0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“use of only a PFA herbicide plus POST cultivation in a stale seedbed planting where competitive weeds such as common cocklebur appear later will result in a significant reduction in net returns”

✓ located verbatim in the source · abstract, characters 1014–1207 · show in text ↑
t0

“Soybean”

✓ located verbatim in the source · title, characters 44–51 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Adding pre-emergence herbicide to preplant foliar herbicide and postplant cultivation gave the highest soybean net return with least input.

Taxon
SoybeanGlycine maxt0
Treatment
PRE herbicides in conjunction with PFA herbicide and POST cultivatione0
Outcome
net returne0
Direction
higheste0
Qualifier
least inpute0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“use of PRE herbicides in conjunction with PFA herbicide and POST cultivation in a stale seedbed planting will result in the highest net return with the least input”

✓ located verbatim in the source · abstract, characters 1216–1379 · show in text ↑
t0

“Soybean”

✓ located verbatim in the source · title, characters 44–51 · show in text ↑

herbicide · yield · Glycine max (soybean)Positive and negative results

4 papers: 3 positive, 1 negative or no effect

2 papers in the same direction as this paper · 1 in the opposite direction

  1. no effect
  2. positive
  3. positive
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sowing time · yield · Glycine max (soybean)Positive and negative results

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tillage · yield · Glycine max (soybean)Positive and negative results

390 papers: 264 positive, 126 negative or no effect

125 papers in the same direction as this paper · 264 reporting no difference from an alternative

  1. positive
  2. no effect
  3. negative

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application · yield · Glycine max (soybean)Positive and negative results

404 papers: 332 positive, 72 negative or no effect

331 papers in the same direction as this paper · 66 in the opposite direction · 6 reporting no difference from an alternative

  1. negative
  2. no effect
  3. no effect

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herbicide · yield · Glycine max (soybean)Positive and negative results

460 papers: 322 positive, 138 negative or no effect

321 papers in the same direction as this paper · 112 in the opposite direction · 26 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. no effect

456 papers more in this group

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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.