Abstract
Effective weed control in corn ( Zea mays L.) is important to optimize yield. Concern over environmental impact of atrazine and selection for glyphosate resistance has increased the need to develop alternative strategies that use herbicides other than atrazine and glyphosate and appropriate cultural practices to control weeds. Research was conducted during 2011 and 2012 to determine weed and corn response to herbicide programs containing dicamba, glufosinate, and glyphosate applied postemergence alone or with atrazine in single- and twin-row planting patterns. Planting pattern had no effect on common ragweed ( Ambrosia artemisiifolia L.) and Texas panicum ( Panicum texanum L.) population and did not interact with herbicide program. Effective weed control hastened maturity in some but not all instances. Under weed-free conditions, corn grain yield was higher in 5 of 7 trials when planted in twin rows versus single rows at equivalent corn populations (141,000 plants ha −1 ). These results suggest that while planting pattern may not impact weed control dramatically, planting corn in twin rows may be an effective alternative to single-row planting patterns because of increased yield under high corn populations.
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Claims 5
Claim · model-written summary
Planting pattern did not affect common ragweed population.
- Taxon
- corn
Zea mays subsp. mayse1 - Treatment
- Planting patterne0
- Interactor
- Ambrosia artemisiifolia L.
Ambrosia artemisiifoliae0weed - Outcome
- common ragweed ( Ambrosia artemisiifolia L.)e0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Planting pattern had no effect on common ragweed ( Ambrosia artemisiifolia L.) and Texas panicum ( Panicum texanum L.) population”
e1“corn ( Zea mays L.)”
Claim · model-written summary
Planting pattern did not affect Texas panicum population.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- Planting patterne0
- Interactor
- Panicum texanum L.
Urochloa texanae0weed - Outcome
- Texas panicum ( Panicum texanum L.) populatione0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Planting pattern had no effect on common ragweed ( Ambrosia artemisiifolia L.) and Texas panicum ( Panicum texanum L.) population”
e1“corn ( Zea mays L.)”
Claim · model-written summary
Planting pattern did not interact with herbicide program.
- Taxon
- cornZea mays subsp. mayse2
- Outcome
- did not interact with herbicide programe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“did not interact with herbicide program”
e1“Planting pattern had no effect on common ragweed ( Ambrosia artemisiifolia L.) and Texas panicum ( Panicum texanum L.) population”
e2“corn ( Zea mays L.)”
Claim · model-written summary
Effective weed control hastened corn maturity in some instances.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- Effective weed controle0
- Outcome
- maturitye0
- Direction
- hastenede0
- Qualifier
- in some but not all instancese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Effective weed control hastened maturity in some but not all instances”
e1“corn ( Zea mays L.)”
Claim · model-written summary
Under weed-free conditions, twin-row corn had higher yield than single-row corn in five of seven trials.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- twin rowse0
- Outcome
- corn grain yielde0
- Direction
- highere0
- Value
- 5 of 7 trialse0
- Qualifier
- 141,000 plants ha −1e0
- Comparator
- single rowse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under weed-free conditions, corn grain yield was higher in 5 of 7 trials when planted in twin rows versus single rows at equivalent corn populations (141,000 plants ha −1 )”
The same questions in other papers
herbicide · phenology · Zea mays (maize)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
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.