Paper · 1993 · Weed Technology

Cover Crop Management and Weed Control in Corn (Zea mays)

Gregg A. Johnson; Michael S. Defelice; Zane R. Helsel

7
claims
14
verbatim quotes
68
citations
2
research areas
—
Not open access

Abstract

Field experiments were conducted in central Missouri in 1989 and 1990 to evaluate weed control practices in conjunction with cover crops and cover management systems in reduced tillage corn. There was no difference in weed control among soybean stubble, hairy vetch, and rye soil cover when averaged over cover management systems and herbicide treatments. However, mowed hairy vetch and rye covers provided greater weed control in the no-till plots than soybean stubble when no herbicide was used. Differences in weed control among cover management systems were reduced or eliminated when a PRE herbicide was applied. corn population and height were reduced by hairy vetch and rye soil cover. Corn grain yield was reduced in rye plots both years. There was no difference in grain yield between tilled and no-till plots.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 7

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Weed control did not differ among soybean stubble, hairy vetch, and rye soil covers averaged over management and herbicide.

Treatment
soybean stubble, hairy vetch, and rye soil covere0
Outcome
weed controle0
Direction
no differencee0
Comparator
soybean stubble, hairy vetch, and rye soil covere0

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Corn (Zea mays)”

✓ located verbatim in the source · title, characters 42–57 · show in text ↑
e0

“There was no difference in weed control among soybean stubble, hairy vetch, and rye soil cover when averaged over cover management systems and herbicide treatments.”

✓ located verbatim in the source · abstract, characters 191–355 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Without herbicide in no-till plots, mowed hairy vetch and rye gave greater weed control than soybean stubble.

Treatment
mowed hairy vetch and rye coverse0
Outcome
weed controle0
Direction
greatere0
Comparator
soybean stubblee0

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Corn (Zea mays)”

✓ located verbatim in the source · title, characters 42–57 · show in text ↑
e0

“However, mowed hairy vetch and rye covers provided greater weed control in the no-till plots than soybean stubble when no herbicide was used.”

✓ located verbatim in the source · abstract, characters 356–497 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

A PRE herbicide reduced or eliminated weed-control differences among cover management systems.

Treatment
PRE herbicidee0
Outcome
Differences in weed control among cover management systemse0
Direction
reduced or eliminatede0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Corn (Zea mays)”

✓ located verbatim in the source · title, characters 42–57 · show in text ↑
e0

“Differences in weed control among cover management systems were reduced or eliminated when a PRE herbicide was applied.”

✓ located verbatim in the source · abstract, characters 498–617 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Hairy vetch and rye soil covers reduced corn population.

Treatment
hairy vetch and rye soil covere0
Outcome
corn populatione0
Direction
reducede0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Corn (Zea mays)”

✓ located verbatim in the source · title, characters 42–57 · show in text ↑
e0

“corn population and height were reduced by hairy vetch and rye soil cover.”

✓ located verbatim in the source · abstract, characters 618–692 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Hairy vetch and rye soil covers reduced height.

Treatment
hairy vetch and rye soil covere0
Outcome
heighte0
Direction
reducede0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Corn (Zea mays)”

✓ located verbatim in the source · title, characters 42–57 · show in text ↑
e0

“corn population and height were reduced by hairy vetch and rye soil cover.”

✓ located verbatim in the source · abstract, characters 618–692 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Rye plots had reduced corn grain yield in both years.

Treatment
rye plotse0
Outcome
Corn grain yielde0
Direction
reducede0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Corn (Zea mays)”

✓ located verbatim in the source · title, characters 42–57 · show in text ↑
e0

“Corn grain yield was reduced in rye plots both years.”

✓ located verbatim in the source · abstract, characters 693–746 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Grain yield did not differ between tilled and no-till plots.

Treatment
no-till plotse0
Outcome
grain yielde0
Direction
no differencee0
Comparator
tillede0

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Corn (Zea mays)”

✓ located verbatim in the source · title, characters 42–57 · show in text ↑
e0

“There was no difference in grain yield between tilled and no-till plots.”

✓ located verbatim in the source · abstract, characters 747–819 · show in text ↑

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