Paper · 1979 · Transactions of the ASAE

Systems for Interseeding and Double Cropping Soybeans

K. W. Wendte; W. R. Nave

6
claims
10
verbatim quotes
2
citations
1
research areas
—
Not open access

Abstract

ABSTRACT DATA are presented on the yield and net income from various interseeding and double cropping systems. The experiment included interseeding soy-beans in wheat by broadcasting and planting 20- and 38-cm rows on three different dates. The double cropped treatments were planted after wheat harvest in 18-, 20-, 38-, and 76-cm row widths in plots with either no tillage, disking, or plowing. Soybeans interseeded in wheat on May 10, 1976 pro-duced higher yields than those interseeded on April 30 or May 19. Yields from soybeans interseeded in 20- and 38-cm rows were not significantly different; however, the 38-cm row spacing produced a larger net income because wheat yield losses were higher in the 20-cm rows. Soybeans double cropped in 18-, 20-, and 38-cm row spacings produced higher yields than those planted in 76-cm rows. The no-till and plow treatments produced higher soy-bean yields than the disk treatment, because of poor stands on disked plots. There was no significant dif-ference between treatments receiving no-till and those plowed.

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Claims 6

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Soybeans interseeded in wheat on May 10, 1976 produced higher yields than soybeans interseeded on April 30 or May 19

Taxon
SoybeansGlycine maxe1
Treatment
interseeded in wheat on May 10, 1976e1
Outcome
yieldse1
Direction
highere1
Comparator
interseeded on April 30 or May 19e1

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e1

“Soybeans interseeded in wheat on May 10, 1976 pro-duced higher yields than those interseeded on April 30 or May 19”

✓ located verbatim in the source · abstract, characters 397–511 · show in text ↑
Observationobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Soybean yields did not differ significantly between interseeding in 20- and 38-cm rows

Taxon
soybeansGlycine maxe2
Treatment
interseeded in 20- and 38-cm rowse2
Outcome
Yieldse2
Direction
no_changeinferrede2

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e2

“Yields from soybeans interseeded in 20- and 38-cm rows were not significantly different”

✓ located verbatim in the source · abstract, characters 513–600 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The 38-cm row spacing gave a larger net income than the 20-cm rows in interseeded soybean

Taxon
SoybeansGlycine maxt0
Treatment
38-cm row spacinge3
Outcome
net incomee3
Direction
largere3
Comparator
20-cm rowse3

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Systems for Interseeding and Double Cropping Soybeans”

✓ located verbatim in the source · title, characters 0–53 · show in text ↑
e3

“the 38-cm row spacing produced a larger net income because wheat yield losses were higher in the 20-cm rows”

✓ located verbatim in the source · abstract, characters 611–718 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Wheat yield losses were higher in the 20-cm rows than with 38-cm row spacing when soybean was interseeded

Treatment
the 20-cm rowse3
Outcome
wheat yield lossese3
Direction
highere3
Comparator
the 38-cm row spacinge3

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e3

“the 38-cm row spacing produced a larger net income because wheat yield losses were higher in the 20-cm rows”

✓ located verbatim in the source · abstract, characters 611–718 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Soybeans double cropped in 18-, 20- and 38-cm row spacings yielded more than those planted in 76-cm rows

Taxon
SoybeansGlycine maxe4
Treatment
18-, 20-, and 38-cm row spacingse4
Outcome
yieldse5
Direction
highere5
Comparator
76-cm rowse5

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e4

“Soybeans double cropped in 18-, 20-, and 38-cm row spacings”

✓ located verbatim in the source · abstract, characters 720–779 · show in text ↑
e5

“higher yields than those planted in 76-cm rows”

✓ located verbatim in the source · abstract, characters 789–835 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

No-till and plow treatments gave higher soybean yields than the disk treatment

Taxon
SoybeansGlycine maxt0
Treatment
no-till and plowe6
Outcome
soy-bean yieldse6
Direction
highere6
Qualifier
poor stands on disked plotse7
Comparator
the disk treatmente6

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Systems for Interseeding and Double Cropping Soybeans”

✓ located verbatim in the source · title, characters 0–53 · show in text ↑
e6

“The no-till and plow treatments produced higher soy-bean yields than the disk treatment”

✓ located verbatim in the source · abstract, characters 837–924 · show in text ↑
e7

“because of poor stands on disked plots”

✓ located verbatim in the source · abstract, characters 926–964 · show in text ↑

Triticum aestivum · yield · Glycine max (soybean)Positive and negative results

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  1. no effect
  2. negative
  3. no effect

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

305 papers: 207 positive, 98 negative or no effect

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  1. negative
  2. no effect
  3. no effect

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

390 papers: 264 positive, 126 negative or no effect

263 papers in the same direction as this paper · 100 in the opposite direction · 26 reporting no difference from an alternative

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

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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.