Abstract
The effect of tillage and herbicide application timing was examined on established populations of burcucumber ( Sicyos angulatus L.) in corn ( Zea mays L.). The field study consisted of three tillage regimes (moldboard plow/disk, chisel plow/disk, and no‐tillage) and three herbicide treatments: atrazine [6‐chloro‐ N ‐ethyl‐ N ′‐(1‐methylethyl)‐1,3,5‐triazine‐2,4‐diamine] plus the dimethylamine salt of dicamba; 3,6‐dichloro‐2‐methoxybenzoic acid applied preemergence (PRE) or postemergence (POST); and no atrazine plus dicamba (no broadleaf herbicide). Postemergence treatments were applied to 3‐ to 6‐leaf corn and cotyledon to 8‐leaf burcucumber. In two of three field locations, late‐season burcucumber dry weight was approximately 65% less in no‐tillage than in the moldboard plow treatment, while no difference in burcucumber dry weight was observed between chisel plow and no‐tillage treatments. Regardless of tillage system, atrazine plus dicamba applied POST was more effective than PRE applications. Corn grain yield was not affected by tillage treatment, but was higher in both the PRE and POST treatments than in the no broadleaf herbicide treatment. Depth of burcucumber seedling emergence was examined in the greenhouse. Pre‐germinated burcucumber seeds were placed in the soil at 0, 1, 3, 5, 10, 15, and 20 cm deep. Percent emergence was highest in the 1 to 5 cm depth. Less burcucumber emerged from depths of 10 cm or greater or when burcucumber was placed on the soil surface. These data suggest that tillage and herbicide timing can influence burcucumber control.
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Claims 9
Claim · model-written summary
Burcucumber dry weight was approximately 65% lower under no tillage than moldboard plowing at two of three sites.
- Treatment
- no‐tillagee0
- Interactor
- burcucumbere0weed
- Outcome
- burcucumber dry weighte0
- Direction
- lesse0
- Value
- 65%e0
- Comparator
- moldboard plow treatmente0
Not reportedTaxon
Verbatim
e0“In two of three field locations, late‐season burcucumber dry weight was approximately 65% less in no‐tillage than in the moldboard plow treatment”
Claim · model-written summary
Burcucumber dry weight did not differ between chisel plow and no tillage.
- Taxon
- Corn
Zea mays subsp. mayst0 - Treatment
- chisel plowe0
- Interactor
- burcucumbere0weed
- Outcome
- burcucumber dry weighte0
- Direction
- no differencee0
- Comparator
- no‐tillagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no difference in burcucumber dry weight was observed between chisel plow and no‐tillage treatments”
t0“in Corn”
Claim · model-written summary
Postemergence atrazine plus dicamba controlled burcucumber better than preemergence application across tillage systems.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- atrazine plus dicamba applied POSTe0
- Interactor
- Burcucumbert0weed
- Outcome
- more effectivee0
- Direction
- more effectivee0
- Comparator
- PRE applicationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Regardless of tillage system, atrazine plus dicamba applied POST was more effective than PRE applications”
t0“Burcucumber Management in Corn”
Claim · model-written summary
Corn grain yield was unaffected by tillage.
- Taxon
- CornZea mays subsp. mayse0
- Treatment
- tillage treatmente0
- Outcome
- Corn grain yielde0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn grain yield was not affected by tillage treatment”
Claim · model-written summary
Corn grain yield was higher under preemergence herbicide than no broadleaf herbicide.
- Taxon
- CornZea mays subsp. mayse0
- Treatment
- PREe0
- Outcome
- Corn grain yielde0
- Direction
- highere0
- Comparator
- no broadleaf herbicide treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn grain yield was not affected by tillage treatment, but was higher in both the PRE and POST treatments than in the no broadleaf herbicide treatment”
Claim · model-written summary
Corn grain yield was higher under postemergence herbicide than no broadleaf herbicide.
- Taxon
- CornZea mays subsp. mayse0
- Treatment
- POSTe0
- Outcome
- Corn grain yielde0
- Direction
- highere0
- Comparator
- no broadleaf herbicide treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn grain yield was not affected by tillage treatment, but was higher in both the PRE and POST treatments than in the no broadleaf herbicide treatment”
Claim · model-written summary
Burcucumber emergence was highest at 1 to 5 cm burial depth.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- 1 to 5 cm depthe0
- Interactor
- Burcucumbert0weed
- Outcome
- Percent emergencee0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Percent emergence was highest in the 1 to 5 cm depth”
t0“Burcucumber Management in Corn”
Claim · model-written summary
Burcucumber emergence was lower at depths of 10 cm or greater.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- depths of 10 cm or greatere0
- Interactor
- burcucumbere0weed
- Outcome
- burcucumber emergede0
- Direction
- Lesse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Less burcucumber emerged from depths of 10 cm or greater”
t0“in Corn”
Claim · model-written summary
Burcucumber emergence was lower when seeds were placed on the soil surface.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- burcucumber was placed on the soil surfacee0
- Interactor
- burcucumbere0weed
- Outcome
- burcucumber emergede0
- Direction
- Lesse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Less burcucumber emerged from depths of 10 cm or greater or when burcucumber was placed on the soil surface”
t0“in Corn”
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