Paper · 1984 · Agronomy Journal

No‐Tillage of Grain Sorghum on a Shrinking Clay Soil1

Thomas J. Gerik; John E. Morrison

6
claims
12
verbatim quotes
13
citations
1
research areas
—
Not open access

Abstract

Abstract Conservation tillage systems, such as no‐tillage, have shown tremendous potential for controlling erosion, yet results in crop growth and yield have varied with location, environment, and soil type. The objectives of this study were to evaluate the effects of no‐tillage (NT) and conventional tillage (CT) on growth and development of grain sorghum ( Sorghum bicolor L. Moench) grown on a heavy clay soil in a humid, subtropical climate. The study was conducted over a 2‐year period on an Austin silty clay (fine‐silty, carbonatic, thermic Entic Haplustolls) with grain sorghum grown in rotation with winter wheat ( Triticum aestivum L.). Grain sorghum yields did not differ significantly between NT and CT. Soil water contents were not significantly different between the tillage treatments, but there were consistent trends toward more soil water under NT throughout sorghum development each year. The tillage treatments did not have a major effect on soil temperature. Reductions in the leaf area index at panicle initiation noted under the NT treatment, however, were not reflected in differences in grain yield. Therefore, no‐tillage may become an attractive management alternative for areas with similar soil and climatic conditions.

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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 6

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Grain sorghum yields did not differ significantly between no-tillage and conventional tillage.

Taxon
grain sorghumSorghum bicolort0
Treatment
NTe0
Outcome
yieldse0
Direction
did not differe0
Comparator
CTe0

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 sorghum yields did not differ significantly between NT and CT.”

✓ located verbatim in the source · abstract, characters 648–716 · show in text ↑
t0

“grain sorghum grown in rotation with winter wheat”

✓ located verbatim in the source · abstract, characters 573–622 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Soil water content did not significantly differ between tillage treatments.

Taxon
grain sorghumSorghum bicolort0
Treatment
tillage treatmentse0
Outcome
Soil water contentse0
Direction
not significantly differente0

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

“Soil water contents were not significantly different between the tillage treatments”

✓ located verbatim in the source · abstract, characters 717–800 · show in text ↑
t0

“grain sorghum grown in rotation with winter wheat”

✓ located verbatim in the source · abstract, characters 573–622 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

There was a consistent trend toward more soil water under no-tillage during sorghum development.

Taxon
grain sorghumSorghum bicolort0
Treatment
NTe0
Outcome
soil watere0
Direction
moree0
Qualifier
throughout sorghum development each yeare0

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

“there were consistent trends toward more soil water under NT throughout sorghum development each year.”

✓ located verbatim in the source · abstract, characters 806–908 · show in text ↑
t0

“grain sorghum grown in rotation with winter wheat”

✓ located verbatim in the source · abstract, characters 573–622 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Tillage treatments had no major effect on soil temperature.

Taxon
grain sorghumSorghum bicolort0
Treatment
tillage treatmentse0
Outcome
soil temperaturee0
Direction
did not have a major effecte0

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

“The tillage treatments did not have a major effect on soil temperature.”

✓ located verbatim in the source · abstract, characters 909–980 · show in text ↑
t0

“grain sorghum grown in rotation with winter wheat”

✓ located verbatim in the source · abstract, characters 573–622 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

No-tillage reduced sorghum leaf area index at panicle initiation.

Taxon
grain sorghumSorghum bicolort0
Organ / stage
panicle initiatione0
Treatment
NT treatmente0
Outcome
leaf area indexe0
Direction
Reductionse0

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

“Reductions in the leaf area index at panicle initiation noted under the NT treatment”

✓ located verbatim in the source · abstract, characters 981–1065 · show in text ↑
t0

“grain sorghum grown in rotation with winter wheat”

✓ located verbatim in the source · abstract, characters 573–622 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors propose no-tillage as an attractive management option in similar soil and climate.

Taxon
grain sorghumSorghum bicolort0
Outcome
no‐tillagee0
Qualifier
areas with similar soil and climatic conditionse0

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

“no‐tillage may become an attractive management alternative for areas with similar soil and climatic conditions.”

✓ located verbatim in the source · abstract, characters 1137–1248 · show in text ↑
t0

“grain sorghum grown in rotation with winter wheat”

✓ located verbatim in the source · abstract, characters 573–622 · show in text ↑

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

3 papers: 2 positive, 1 negative or no effect

2 in the opposite direction

  1. positive
  2. positive
See all 3 papers →

tillage · soil: physics · Sorghum bicolor (sorghum)Positive and negative results

10 papers: 7 positive, 3 negative or no effect

2 papers in the same direction as this paper · 7 in the opposite direction

  1. positive
  2. positive
  3. positive

6 papers more in this group

See all 10 papers →

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

48 papers: 29 positive, 19 negative or no effect

18 papers in the same direction as this paper · 29 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive

44 papers more in this group

See all 48 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.