Abstract
Abstract Potential increases in corn ( Zea mays L.) grain yield have led many producers to consider using narrow corn rows. Narrow row spacing is also thought to play a role in reducing weed interference through enhanced light interception by the crop. However, there is little information on how narrow row spacing and cultivation fit into an integrated weed and crop management strategy. The objective of this research was to investigate the potential for reduced herbicide amount (either through below‐label rate and/or banded applications) using narrow corn crop row spacing and timely cultivation. Field studies were conducted in 1995 and 1996 at the University of Minnesota Southern Experiment Station in Waseca. Corn was planted in 51‐ and 76‐cm row spacings. Within each row‐spacing treatment, plots were either cultivated or not cultivated. Eight herbicide treatments were applied to each row space and cultivation plot. Corn row spacing had little impact on giant foxtail ( Setaria faberi Herrm.) and common ragweed ( Ambrosia artemisiifolia L.) visual control, density, biomass, or height. Cultivation was the single most important variable in reducing the amount of herbicide used. Grain yield was not increased by planting corn in narrow rows. Increased grain yield and weed control reported in previous research studies using narrow row spacing may be due to the choice of hybrid, plant population, and weed spectrum present.
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Claims 4
Claim · model-written summary
Corn row spacing had little impact on giant foxtail and common ragweed control, density, biomass or height.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- Corn row spacinge2
- Interactor
- giant foxtaile2weed
- Second interactor
- common ragweed
Ambrosia artemisiifoliae2weed - Outcome
- visual control, density, biomass, or heighte2
- Direction
- little impacte2
- Setting
- University of Minnesota Southern Experiment Station in Wasecae1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potential increases in corn ( Zea mays L.) grain yield have led many producers to consider using narrow corn rows”
e1“Field studies were conducted in 1995 and 1996 at the University of Minnesota Southern Experiment Station in Waseca”
e2“Corn row spacing had little impact on giant foxtail ( Setaria faberi Herrm.) and common ragweed ( Ambrosia artemisiifolia L.) visual control, density, biomass, or height”
Claim · model-written summary
Cultivation was the single most important variable in reducing the amount of herbicide used, compared with not cultivated plots.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- Cultivatione3
- Outcome
- amount of herbicide usede3
- Direction
- reducinge3
- Comparator
- not cultivatede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potential increases in corn ( Zea mays L.) grain yield have led many producers to consider using narrow corn rows”
e3“Cultivation was the single most important variable in reducing the amount of herbicide used”
e4“Within each row‐spacing treatment, plots were either cultivated or not cultivated”
Claim · model-written summary
Planting corn in narrow rows did not increase grain yield.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- planting corn in narrow rowse5
- Outcome
- Grain yielde5
- Direction
- not increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potential increases in corn ( Zea mays L.) grain yield have led many producers to consider using narrow corn rows”
e5“Grain yield was not increased by planting corn in narrow rows”
Claim · model-written summary
Increased grain yield and weed control reported in earlier narrow-row studies may be due to hybrid choice, plant population and weed spectrum.
- Taxon
- cornZea mays subsp. mayse0
- Outcome
- Increased grain yield and weed controle6
- Qualifier
- choice of hybrid, plant population, and weed spectrum presente6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potential increases in corn ( Zea mays L.) grain yield have led many producers to consider using narrow corn rows”
e6“Increased grain yield and weed control reported in previous research studies using narrow row spacing may be due to the choice of hybrid, plant population, and weed spectrum present”
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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.