Paper · 1981 · Journal of the American Society for Horticultural Science

Influence of Tillage System, Plant Spacing, and Nitrogen on Head Weight, Yield, and Nutrient Concentration of Spring Cabbage1

Dean E. Knavel; J. W. Herron

5
claims
9
verbatim quotes
22
citations
2
research areas
✓
Open access · cc-by-nc-nd

Abstract

Abstract Spring cabbage plants ( Brassica oleracea L. Capitata group) grown by no-tillage culture yielded less than conventionally tilled plants when grown under the same N treatment and spacing. No-till yields could be compensated somewhat by increasing plant population and N, but head size was generally smaller than for conventionally tilled plants. Large head size was positively correlated with high N content of wrapper leaves in 3 of 4 years, while high Ca was associated with large plants or heads in 2 of 4 years.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. Read at the source ↗

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 5

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

No-tillage culture yielded less than conventionally tilled spring cabbage

Taxon
Brassica oleracea L. Capitata groupBrassica oleraceae0
Treatment
no-tillage culturee0
Outcome
yielde0
Direction
lesse0
Comparator
conventionally tilled plantse0

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

Brassica oleracea
Brassica oleracea · TaxonDaderot · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Spring cabbage plants ( Brassica oleracea L. Capitata group) grown by no-tillage culture yielded less than conventionally tilled plants when grown under the same N treatment and spacing”

✓ located verbatim in the source · abstract, characters 9–194 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Increasing plant population and nitrogen somewhat compensated no-till yield loss in spring cabbage

Taxon
Brassica oleracea L. Capitata groupBrassica oleraceae0
Treatment
increasing plant population and Ne1
Outcome
yieldse1
Direction
increaseinferrede1
Qualifier
somewhate1
Comparator
No-tille1

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

Brassica oleracea
Brassica oleracea · TaxonDaderot · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Spring cabbage plants ( Brassica oleracea L. Capitata group) grown by no-tillage culture yielded less than conventionally tilled plants when grown under the same N treatment and spacing”

✓ located verbatim in the source · abstract, characters 9–194 · show in text ↑
e1

“No-till yields could be compensated somewhat by increasing plant population and N, but head size was generally smaller than for conventionally tilled plants”

✓ located verbatim in the source · abstract, characters 196–352 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

No-till spring cabbage heads were generally smaller than heads of conventionally tilled plants

Taxon
Brassica oleracea L. Capitata groupBrassica oleraceae0
Treatment
No-tille1
Outcome
head sizee1
Direction
smallere1
Qualifier
generallye1
Comparator
conventionally tilled plantse1

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

Brassica oleracea
Brassica oleracea · TaxonDaderot · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Spring cabbage plants ( Brassica oleracea L. Capitata group) grown by no-tillage culture yielded less than conventionally tilled plants when grown under the same N treatment and spacing”

✓ located verbatim in the source · abstract, characters 9–194 · show in text ↑
e1

“No-till yields could be compensated somewhat by increasing plant population and N, but head size was generally smaller than for conventionally tilled plants”

✓ located verbatim in the source · abstract, characters 196–352 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Large head size was positively correlated with high nitrogen content of wrapper leaves in 3 of 4 years

Taxon
Brassica oleracea L. Capitata groupBrassica oleraceae0
Organ / stage
wrapper leavese2
Compound
Ne2
Outcome
head sizee2
Direction
positivelye2
Qualifier
in 3 of 4 yearse2

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

Brassica oleracea
Brassica oleracea · TaxonDaderot · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Spring cabbage plants ( Brassica oleracea L. Capitata group) grown by no-tillage culture yielded less than conventionally tilled plants when grown under the same N treatment and spacing”

✓ located verbatim in the source · abstract, characters 9–194 · show in text ↑
e2

“Large head size was positively correlated with high N content of wrapper leaves in 3 of 4 years”

✓ located verbatim in the source · abstract, characters 354–449 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

High Ca was associated with large plants or heads in 2 of 4 years

Taxon
Brassica oleracea L. Capitata groupBrassica oleraceae0
Compound
Cae3
Outcome
large plants or headse3
Direction
increaseinferrede3
Qualifier
in 2 of 4 yearse3

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

Brassica oleracea
Brassica oleracea · TaxonDaderot · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Spring cabbage plants ( Brassica oleracea L. Capitata group) grown by no-tillage culture yielded less than conventionally tilled plants when grown under the same N treatment and spacing”

✓ located verbatim in the source · abstract, characters 9–194 · show in text ↑
e3

“high Ca was associated with large plants or heads in 2 of 4 years”

✓ located verbatim in the source · abstract, characters 457–522 · show in text ↑

tillage · yield · Brassica oleracea (wild cabbage)Positive and negative results

32 papers: 17 positive, 15 negative or no effect

14 papers in the same direction as this paper · 17 in the opposite direction

  1. no effect
  2. positive
  3. positive

28 papers more in this group

See all 32 papers →

density · yield · Brassica oleracea (wild cabbage)Positive and negative results

60 papers: 50 positive, 10 negative or no effect

49 papers in the same direction as this paper · 9 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. positive
  3. negative

56 papers more in this group

See all 60 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.