Paper · 1977 · Journal of the American Society for Horticultural Science

Effect of Soil Compaction on Nitrogen and Water Use Efficiency, Root Growth, Yield, and Fruit Shape of Pickling Cucumbers1

D. A. Smittle; R. E. Williamson

8
claims
16
verbatim quotes
11
citations
4
research areas
✓
Open access · cc-by-nc-nd

Abstract

Abstract Root growth of cucumber ( Cucumis sativus L.) was not greatly restricted by soil strength less than 500 kPa (5 bars). Root growth was inhibited 80% at a soil strength of 850 kPa. Mechanical compaction produced by a tractor wheel resulted in a 50% reduction of tissue NO 3 at comparable soil NO 3 levels, a 25 to 35% yield reduction, and a decrease in fruit length/diameter ratio. The effects of soil compaction could be partially alleviated by increasing the rate of nitrogen fertilization; however, a 3-fold increase in N fertilization did not completely counteract the effect of compaction on cucumber yield. A system for cucumber seedbed preparation which reduces soil compaction is presented.

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 8

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Cucumber root growth was not greatly restricted by soil strength below 500 kPa.

Taxon
cucumberCucumis sativuse0
Treatment
soil strength less than 500 kPae0
Outcome
Root growthe0
Direction
not greatly restrictede0

Not reportedComparator

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

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Root growth of cucumber ( Cucumis sativus L.) was not greatly restricted by soil strength less than 500 kPa”

✓ located verbatim in the source · abstract, characters 9–116 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Cucumber root growth was inhibited by 80% at a soil strength of 850 kPa.

Taxon
cucumberCucumis sativuse0
Treatment
soil strength of 850 kPae1
Outcome
Root growthe1
Direction
inhibitede1
Value
80%e1

Not reportedComparator

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

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Root growth of cucumber ( Cucumis sativus L.) was not greatly restricted by soil strength less than 500 kPa”

✓ located verbatim in the source · abstract, characters 9–116 · show in text ↑
e1

“Root growth was inhibited 80% at a soil strength of 850 kPa”

✓ located verbatim in the source · abstract, characters 127–186 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Mechanical compaction by a tractor wheel reduced tissue NO 3 of cucumber by 50% at comparable soil NO 3 levels.

Taxon
cucumberCucumis sativuse0
Treatment
Mechanical compaction produced by a tractor wheele2
Outcome
tissue NO 3e2
Direction
reductione2
Value
50%e2

Not reportedComparator

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

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Root growth of cucumber ( Cucumis sativus L.) was not greatly restricted by soil strength less than 500 kPa”

✓ located verbatim in the source · abstract, characters 9–116 · show in text ↑
e2

“Mechanical compaction produced by a tractor wheel resulted in a 50% reduction of tissue NO 3 at comparable soil NO 3 levels”

✓ located verbatim in the source · abstract, characters 188–311 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Mechanical compaction reduced cucumber yield by 25 to 35%.

Taxon
cucumberCucumis sativuse0
Treatment
Mechanical compaction produced by a tractor wheele2
Outcome
yielde3
Direction
reductione3
Value
25 to 35%e3

Not reportedComparator

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

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Root growth of cucumber ( Cucumis sativus L.) was not greatly restricted by soil strength less than 500 kPa”

✓ located verbatim in the source · abstract, characters 9–116 · show in text ↑
e2

“Mechanical compaction produced by a tractor wheel resulted in a 50% reduction of tissue NO 3 at comparable soil NO 3 levels”

✓ located verbatim in the source · abstract, characters 188–311 · show in text ↑
e3

“a 25 to 35% yield reduction”

✓ located verbatim in the source · abstract, characters 313–340 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Mechanical compaction decreased the fruit length/diameter ratio of cucumber.

Taxon
cucumberCucumis sativuse0
Treatment
Mechanical compaction produced by a tractor wheele2
Outcome
fruit length/diameter ratioe4
Direction
decreasee4

Not reportedComparator

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

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Root growth of cucumber ( Cucumis sativus L.) was not greatly restricted by soil strength less than 500 kPa”

✓ located verbatim in the source · abstract, characters 9–116 · show in text ↑
e2

“Mechanical compaction produced by a tractor wheel resulted in a 50% reduction of tissue NO 3 at comparable soil NO 3 levels”

✓ located verbatim in the source · abstract, characters 188–311 · show in text ↑
e4

“a decrease in fruit length/diameter ratio”

✓ located verbatim in the source · abstract, characters 346–387 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Increasing the rate of nitrogen fertilization could partially alleviate the effects of soil compaction on cucumber.

Taxon
cucumberCucumis sativuse0
Treatment
increasing the rate of nitrogen fertilizatione5
Outcome
effects of soil compactione5
Direction
partially alleviatede5

Not reportedComparator

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

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Root growth of cucumber ( Cucumis sativus L.) was not greatly restricted by soil strength less than 500 kPa”

✓ located verbatim in the source · abstract, characters 9–116 · show in text ↑
e5

“The effects of soil compaction could be partially alleviated by increasing the rate of nitrogen fertilization”

✓ located verbatim in the source · abstract, characters 389–498 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

A 3-fold increase in N fertilization did not completely counteract the effect of compaction on cucumber yield.

Taxon
cucumberCucumis sativuse0
Treatment
a 3-fold increase in N fertilizatione6
Outcome
effect of compaction on cucumber yielde6
Direction
did not completely counteracte6

Not reportedComparator

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

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Root growth of cucumber ( Cucumis sativus L.) was not greatly restricted by soil strength less than 500 kPa”

✓ located verbatim in the source · abstract, characters 9–116 · show in text ↑
e6

“a 3-fold increase in N fertilization did not completely counteract the effect of compaction on cucumber yield”

✓ located verbatim in the source · abstract, characters 509–618 · show in text ↑
Method / resourceobservedoriginal resultbasis n/a

Claim · model-written summary

A cucumber seedbed preparation system that reduces soil compaction is presented.

Taxon
cucumberCucumis sativuse7
Outcome
soil compactione7

Not reportedComparator

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

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e7

“A system for cucumber seedbed preparation which reduces soil compaction is presented”

✓ located verbatim in the source · abstract, characters 620–704 · show in text ↑

fertilization · soil: physics · Cucumis sativus (cucumber)Positive and negative results

8 papers: 7 positive, 1 negative or no effect

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

  1. negative
  2. positive
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tillage · yield · Cucumis sativus (cucumber)Positive and negative results

9 papers: 5 positive, 4 negative or no effect

3 papers in the same direction as this paper · 5 in the opposite direction

  1. positive
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fertilization · yield · Cucumis sativus (cucumber)Positive and negative results

288 papers: 263 positive, 25 negative or no effect

24 papers in the same direction as this paper · 263 in the opposite direction

  1. positive
  2. positive
  3. positive

284 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.