Abstract
Field and greenhouse studies were conducted to evaluate herbicides in pumpkin. Field experiments at three Illinois locations determined weed control and crop injury from clomazone, dimethenamid, ethalfluralin, sulfentrazone, imazamox, RPA 201772, flumiclorac, and halosulfuron applied preemergence. Clomazone plus sulfentrazone controlled redroot pigweed 78 to 99%, ivyleaf morningglory 80 to 97%, common lambsquarters 97%, common purslane 84 to 99%, and velvetleaf 55 to 99%. Imazamox plus clomazone commonly provided more consistent broadleaf weed control than did ethalfluralin plus clomazone. RPA 201772 when used on sandy soils killed the pumpkin. Sulfentrazone initially caused chlorosis and necrosis on pumpkin seedlings when soil organic matter was low (< 1%) or when soil moisture was high. However, plants recovered rapidly, and yields were not affected. In a greenhouse study pumpkin was more tolerant to clomazone plus sulfentrazone than to sulfentrazone.Nomenclature: Clomazone; dimethenamid; ethalfluralin; flumiclorac; halosulfuron, imazamox; RPA 201772 (proposed name, isoxaflutole), 5-cyclopropyl-4-(2-methylsulphonyl)-4-trifluoromethyl-benzoyl isoxazole; sulfentrazone; common lambsquarters, Chenopodium album L. #3 CHEAL; common purslane, Portulaca oleracea L. # POROL; ivyleaf morningglory, Ipomoea hederacea (L.) Jacq. # IPOHE; redroot pigweed, Amaranthus retroflexus L. # AMARE; velvetleaf, Abutilon theophrasti Medicus # ABUTH; pumpkin, Cucurbita pepo var. pepo L. ‘Howden’.Additional index words: Herbicide combinations, herbicide interactions.Abbreviations: DAT, days after treatment; PRE, preemergence.
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Claims 11
Claim · model-written summary
Clomazone plus sulfentrazone controlled redroot pigweed by 78 to 99%.
- Taxon
- pumpkint0
- Treatment
- Clomazone plus sulfentrazonee0
- Outcome
- redroot pigweede0
- Direction
- controllede0
- Value
- 78 to 99%e0
Not reportedComparator
Verbatim
e0“Clomazone plus sulfentrazone controlled redroot pigweed 78 to 99%”
t0“pumpkin”
t1“pumpkin”
Claim · model-written summary
Clomazone plus sulfentrazone controlled ivyleaf morningglory by 80 to 97%.
- Taxon
- pumpkint0
- Treatment
- Clomazone plus sulfentrazonee1
- Interactor
- ivyleaf morningglory
Ipomoea hederaceae0weedt1 - Outcome
- ivyleaf morningglorye0
- Value
- 80 to 97%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ivyleaf morningglory 80 to 97%”
t0“pumpkin”
t1“pumpkin”
e1“Clomazone plus sulfentrazone controlled redroot pigweed 78 to 99%”
Claim · model-written summary
Clomazone plus sulfentrazone controlled common lambsquarters by 97%.
- Taxon
- pumpkint0
- Treatment
- Clomazone plus sulfentrazonee1
- Interactor
- common lambsquarters
Chenopodium albume0weedt1 - Outcome
- common lambsquarterse0
- Value
- 97%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“common lambsquarters 97%”
t0“pumpkin”
t1“pumpkin”
e1“Clomazone plus sulfentrazone controlled redroot pigweed 78 to 99%”
Claim · model-written summary
Clomazone plus sulfentrazone controlled common purslane by 84 to 99%.
Not reportedComparatorDirection
Verbatim
e0“common purslane 84 to 99%”
t0“pumpkin”
t1“pumpkin”
e1“Clomazone plus sulfentrazone controlled redroot pigweed 78 to 99%”
Claim · model-written summary
Clomazone plus sulfentrazone controlled velvetleaf by 55 to 99%.
- Taxon
- pumpkint0
- Treatment
- Clomazone plus sulfentrazonee1
- Interactor
- velvetleaf
Abutilon theophrastie0weedt1 - Outcome
- velvetleafe0
- Value
- 55 to 99%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“velvetleaf 55 to 99%”
t0“pumpkin”
t1“pumpkin”
e1“Clomazone plus sulfentrazone controlled redroot pigweed 78 to 99%”
Claim · model-written summary
Imazamox plus clomazone usually gave more consistent broadleaf weed control than ethalfluralin plus clomazone.
Verbatim
e0“Imazamox plus clomazone commonly provided more consistent broadleaf weed control than did ethalfluralin plus clomazone”
t0“pumpkin”
Claim · model-written summary
RPA 201772 killed pumpkin on sandy soil.
Not reportedComparatorDirection
Verbatim
e0“RPA 201772 when used on sandy soils killed the pumpkin”
Claim · model-written summary
Sulfentrazone initially caused seedling chlorosis and necrosis under low organic matter or high soil moisture.
- Taxon
- pumpkine0
- Organ / stage
- seedlingse0
- Treatment
- Sulfentrazonee0
- Outcome
- chlorosis and necrosise0
- Qualifier
- soil organic matter was low (< 1%) or when soil moisture was highe0
Not reportedComparatorDirection
Verbatim
e0“Sulfentrazone initially caused chlorosis and necrosis on pumpkin seedlings when soil organic matter was low (< 1%) or when soil moisture was high”
Claim · model-written summary
Affected pumpkin plants recovered rapidly.
Not reportedDirection
Verbatim
e0“plants recovered rapidly”
t0“pumpkin”
Claim · model-written summary
Pumpkin yields were unaffected following transient sulfentrazone injury.
Not reportedComparator
Verbatim
e0“yields were not affected”
t0“pumpkin”
t1“pumpkin”
e1“Clomazone plus sulfentrazone controlled redroot pigweed 78 to 99%”
Claim · model-written summary
Pumpkin tolerated clomazone plus sulfentrazone better than sulfentrazone alone in a greenhouse.
Verbatim
e0“In a greenhouse study pumpkin was more tolerant to clomazone plus sulfentrazone than to sulfentrazone”
The same questions in other papers
clomazone · weed · Cucurbita (pumpkins)Results agree
2 papers in the same direction as this paper
- 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.