Paper · 2000 · HortScience

Black Polyethylene Mulch Does Not Reduce Yield of Cucumbers Double-cropped with Tomatoes under Heat Stress

H.Y. Hanna

7
claims
8
verbatim quotes
28
citations
1
research areas
✓
Open access

Abstract

Black polyethylene mulch is preferred for producing early spring tomatoes (Lycopersicon esculentum Mill.) because of its warming effect on the soil around the roots. However, using the same mulch for double-cropping cucumbers ( Cucumis sativus L.) with tomatoes is considered by some growers to be undesirable because of the belief that heat accumulation under the mulch in midsummer or early fall is detrimental to cucumber yield. Eight studies were conducted from July to September in 1994, 1995, and 1996 to determine the effects of mulching spring tomatoes with black vs. white polyethylene mulch on the growth and yield of subsequent cucumber crops. Soil temperature recorded after planting cucumbers ≈4:00 pm for 3 weeks was higher under black mulch than under white mulch. Color of the mulch did not affect leaf length, leaf width, and plant dry weight of cucumbers in six of the eight studies. Cucumbers grown on black mulch produced longer leaves in one study and wider leaves in two studies, and plant dry weight was lower in two studies. Mulch color had no significant effect on the premium or total yields of cucumbers in all but one study. Cucumbers grown on black mulch produced lower percentages of culls in two studies.

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Claims 7

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Soil temperature after planting cucumbers was higher under black polyethylene mulch than under white mulch.

Taxon
cucumbersCucumis sativuse0
Treatment
black mulche0
Outcome
Soil temperaturee0
Direction
highere0
Comparator
white mulche0

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

“Soil temperature recorded after planting cucumbers ≈4:00 pm for 3 weeks was higher under black mulch than under white mulch”

✓ located verbatim in the source · abstract, characters 655–778 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Mulch color did not affect leaf length, leaf width or plant dry weight of cucumbers in six of the eight studies.

Taxon
cucumbersCucumis sativuse1
Treatment
black vs. white polyethylene mulche0
Outcome
leaf length, leaf width, and plant dry weighte1
Direction
did not affecte1
Value
six of the eight studiese1
Comparator
white polyethylene mulche0

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

“Eight studies were conducted from July to September in 1994, 1995, and 1996 to determine the effects of mulching spring tomatoes with black vs. white polyethylene mulch on the growth and yield of subsequent cucumber crops”

✓ located verbatim in the source · abstract, characters 432–653 · show in text ↑
e1

“Color of the mulch did not affect leaf length, leaf width, and plant dry weight of cucumbers in six of the eight studies”

✓ located verbatim in the source · abstract, characters 780–900 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Cucumbers grown on black mulch produced longer leaves than on white mulch in one study.

Taxon
CucumbersCucumis sativuse1
Treatment
black mulche1
Outcome
longer leavese1
Direction
longere1
Value
one studye1

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

e1

“Cucumbers grown on black mulch produced longer leaves in one study and wider leaves in two studies, and plant dry weight was lower in two studies”

✓ located verbatim in the source · abstract, characters 902–1047 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Cucumbers grown on black mulch produced wider leaves than on white mulch in two studies.

Taxon
CucumbersCucumis sativuse1
Treatment
black mulche1
Outcome
wider leavese1
Direction
widere1
Value
two studiese1

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

e1

“Cucumbers grown on black mulch produced longer leaves in one study and wider leaves in two studies, and plant dry weight was lower in two studies”

✓ located verbatim in the source · abstract, characters 902–1047 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Plant dry weight of cucumbers grown on black mulch was lower than on white mulch in two studies.

Taxon
CucumbersCucumis sativuse1
Treatment
black mulche1
Outcome
plant dry weighte1
Direction
lowere1
Value
two studiese1

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

e1

“Cucumbers grown on black mulch produced longer leaves in one study and wider leaves in two studies, and plant dry weight was lower in two studies”

✓ located verbatim in the source · abstract, characters 902–1047 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Mulch color had no significant effect on premium or total yields of cucumbers in all but one study.

Taxon
cucumbersCucumis sativuse1
Treatment
Mulch colore1
Outcome
premium or total yieldse1
Direction
no significant effecte1
Value
all but one studye1

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

e1

“Mulch color had no significant effect on the premium or total yields of cucumbers in all but one study”

✓ located verbatim in the source · abstract, characters 1049–1151 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Cucumbers grown on black mulch produced lower percentages of culls than on white mulch in two studies.

Taxon
CucumbersCucumis sativuse1
Treatment
black mulche1
Outcome
percentages of cullse1
Direction
lowere1
Value
two studiese1

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

e1

“Cucumbers grown on black mulch produced lower percentages of culls in two studies”

✓ located verbatim in the source · abstract, characters 1153–1234 · show in text ↑

mulching · yield · Cucumis sativus (cucumber)Results differ

58 papers: 50 positive, 8 negative or no effect

7 papers in the same direction as this paper · 50 in the opposite direction

  1. positive
  2. positive
  3. positive

54 papers more in this group

See all 58 papers →

mulching · growth · Cucumis sativus (cucumber)Positive and negative results

20 papers: 17 positive, 3 negative or no effect

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

  1. positive
  2. positive
  3. positive

16 papers more in this group

See all 20 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.