Paper · 2017 · Kansas Agricultural Experiment Station Research Reports

Tillage Intensity in a Long-Term Wheat-Sorghum-Fallow Rotation

A. Schlegel

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citations
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Open access · cc-by

Abstract

This study was initiated in 1991 at the Kansas State University Southwest Research- Extension Center near Tribune, KS. The purpose of the study was to identify the effects of tillage intensity on precipitation capture, soil water storage, and grain yield in a wheat-sorghum-fallow rotation. Grain yields of wheat and grain sorghum increased with decreased tillage intensity in a wheat-sorghum-fallow (WSF) rotation. In 2016, available soil water at wheat and sorghum planting was greater for reduced tillage (RT) than no-tillage (NT) and least for conventional tillage (CT). Averaged across the 16-yr study, available soil water at wheat and sorghum planting was similar for RT and NT and about 1 inch greater than CT. Averaged across the past 16 years, NT wheat yields were 4 bu/a greater than RT and 7 bu/a greater than CT. Grain sorghum yields in 2016 were 15 bu/a greater with long-term NT than short-term NT. Averaged across the past 16 years, sorghum yields with long-term NT have been 70% greater than with short-term NT (68 vs. 40 bu/a).

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Claims 8

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Wheat grain yields increased as tillage intensity decreased.

Treatment
decreased tillage intensitye0
Outcome
Grain yieldse0
Direction
increasede0

Not reportedComparator

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

e0

“Grain yields of wheat and grain sorghum increased with decreased tillage intensity in a wheat-sorghum-fallow (WSF) rotation”

✓ located verbatim in the source · abstract, characters 291–414 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Grain sorghum yields increased as tillage intensity decreased.

Taxon
grain sorghumSorghum bicolore0
Treatment
decreased tillage intensitye0
Outcome
Grain yieldse0
Direction
increasede0

Not reportedComparator

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

Sorghum bicolor
Sorghum bicolor · TaxonNo machine-readable author provided. Pethan assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Grain yields of wheat and grain sorghum increased with decreased tillage intensity in a wheat-sorghum-fallow (WSF) rotation”

✓ located verbatim in the source · abstract, characters 291–414 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

In 2016, reduced tillage had greater available soil water at planting than no tillage, while conventional tillage had the least.

Treatment
reduced tillage (RT)e0
Outcome
available soil water at wheat and sorghum plantinge0
Direction
greatere0
Qualifier
In 2016e0
Comparator
no-tillage (NT)e0

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

e0

“In 2016, available soil water at wheat and sorghum planting was greater for reduced tillage (RT) than no-tillage (NT) and least for conventional tillage (CT)”

✓ located verbatim in the source · abstract, characters 416–573 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Over 16 years, reduced tillage and no tillage had similar soil water at planting, about 1 inch more than conventional tillage.

Treatment
RT and NTe0
Outcome
available soil water at wheat and sorghum plantinge0
Direction
greatere0
Value
about 1 inche0
Comparator
CTe0

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

e0

“Averaged across the 16-yr study, available soil water at wheat and sorghum planting was similar for RT and NT and about 1 inch greater than CT”

✓ located verbatim in the source · abstract, characters 575–717 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Over 16 years, no tillage wheat yield exceeded reduced tillage by 4 bu/a.

Treatment
NTe0
Outcome
wheat yieldse0
Direction
greatere0
Value
4 bu/ae0
Comparator
RTe0

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

e0

“Averaged across the past 16 years, NT wheat yields were 4 bu/a greater than RT and 7 bu/a greater than CT”

✓ located verbatim in the source · abstract, characters 719–824 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Over 16 years, no tillage wheat yield exceeded conventional tillage by 7 bu/a.

Treatment
NTe0
Outcome
wheat yieldse0
Direction
greatere0
Value
7 bu/ae0
Comparator
CTe0

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

e0

“Averaged across the past 16 years, NT wheat yields were 4 bu/a greater than RT and 7 bu/a greater than CT”

✓ located verbatim in the source · abstract, characters 719–824 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

In 2016, long-term no tillage sorghum yield exceeded short-term no tillage by 15 bu/a.

Taxon
sorghumSorghume0
Treatment
long-term NTe0
Outcome
Grain sorghum yieldse0
Direction
greatere0
Value
15 bu/ae0
Comparator
short-term NTe0

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

Sorghum
Sorghum · Taxon · picture of the genus (one of its species)Evelyn Simak · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Grain sorghum yields in 2016 were 15 bu/a greater with long-term NT than short-term NT”

✓ located verbatim in the source · abstract, characters 826–912 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Across 16 years, long-term no tillage sorghum yield exceeded short-term no tillage by 70%.

Taxon
sorghumSorghume0
Treatment
long-term NTe0
Outcome
sorghum yieldse0
Direction
greatere0
Value
70%e0
Qualifier
68 vs. 40 bu/ae0
Comparator
short-term NTe0

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

Sorghum
Sorghum · Taxon · picture of the genus (one of its species)Evelyn Simak · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Averaged across the past 16 years, sorghum yields with long-term NT have been 70% greater than with short-term NT (68 vs. 40 bu/a)”

✓ located verbatim in the source · abstract, characters 914–1044 · show in text ↑

tillage · yield · SorghumResults differ

123 papers: 102 positive, 21 negative or no effect

101 papers in the same direction as this paper · 17 in the opposite direction · 4 reporting no difference from an alternative

  1. negative
  2. negative
  3. negative

119 papers more in this group

See all 123 papers →

tillage · yield · Sorghum bicolor (sorghum)Positive and negative results

48 papers: 29 positive, 19 negative or no effect

28 papers in the same direction as this paper · 16 in the opposite direction · 3 reporting no difference from an alternative

  1. negative
  2. no effect
  3. negative

44 papers more in this group

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tillage · soil: physics · Triticum aestivum (wheat)Positive and negative results

142 papers: 118 positive, 24 negative or no effect

117 papers in the same direction as this paper · 22 in the opposite direction · 2 reporting no difference from an alternative

  1. negative
  2. negative
  3. no effect

138 papers more in this group

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tillage · yield · Triticum aestivum (wheat)Positive and negative results

1,414 papers: 1,116 positive, 298 negative or no effect

1,115 papers in the same direction as this paper · 257 in the opposite direction · 41 reporting no difference from an alternative

  1. negative
  2. negative
  3. negative

1,410 papers more in this group

See all 1,414 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.