Abstract
Preemergence (PRE) herbicides are an important part of the overall weed management plan in no-till (NT) pumpkin ( Cucurbita pepo ) production. A field evaluation was conducted in an NT production system using PRE herbicides labeled for pumpkins to determine the benefits of specific herbicide combinations and the economic returns on investment associated with their use. The PRE herbicide treatments evaluated were 1) s-metolachlor (1360 g⋅ha –1 a.i.), 2) clomazone (350 g⋅ha –1 a.i.) and ethalfluralin premix (1120 g⋅ha –1 a.i.), 3) s-metolachlor + clomazone and ethalfluralin premix, 4) s-metolachlor + halosulfuron (35 g⋅ha –1 a.i.), 5) clomazone and ethalfluralin premix + halosulfuron, and 6) none. The primary weed species present were tall waterhemp ( Amaranthus tuberculatus ), redroot pigweed ( Amaranthus retroflexus ), giant foxtail ( Setaria faberi ), and large crabgrass ( Digitaria sanguinalis ). The best weed control option for full-season broadleaf and grass weed control was s-metolachlor + clomazone and ethalfluralin. This herbicide combination also provided the greatest economic return on investment, ranging from a 20% to 40% improvement (depending on the year) compared with the next closest PRE herbicide treatment. Those with the lowest returns on investment were s-metolachlor combined with halosulfuron, and clomazone and ethalfluralin combined with halosulfuron. Besides providing the highest returns on investment, the PRE application of s-metolachlor with clomazone and ethalfluralin also produced the largest pumpkin fruit for the weed species present. Although growers often look for ways to reduce input costs in NT pumpkin production systems, the proper selection of PRE herbicides that considers the weed species present is clearly an important investment that improves pumpkin yields and revenues.
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Claims 3
Claim · model-written summary
S-metolachlor with clomazone and ethalfluralin gave best broadleaf and grass weed control.
- Taxon
- pumpkint0
- Treatment
- s-metolachlor + clomazone and ethalfluraline0
- Outcome
- full-season broadleaf and grass weed controle0
- Direction
- beste0
Not reportedComparator
Verbatim
e0“The best weed control option for full-season broadleaf and grass weed control was s-metolachlor + clomazone and ethalfluralin.”
t0“pumpkin”
Claim · model-written summary
The combination gave the greatest economic return, 20% to 40% above the next closest treatment.
Verbatim
e0“This herbicide combination also provided the greatest economic return on investment, ranging from a 20% to 40% improvement (depending on the year) compared with the next closest PRE herbicide treatment.”
t0“pumpkin”
Claim · model-written summary
The combination produced the largest pumpkin fruit.
- Taxon
- pumpkine0
- Treatment
- PRE application of s-metolachlor with clomazone and ethalfluraline0
- Outcome
- pumpkin fruite0
- Direction
- largeste0
Not reportedComparator
Verbatim
e0“the PRE application of s-metolachlor with clomazone and ethalfluralin also produced the largest pumpkin fruit”
The same questions in other papers
clomazone · weed · Cucurbita (pumpkins)Results agree
2 papers in the same direction as this paper
- positive
- positive
herbicide · yield · Cucurbita (pumpkins)Positive and negative results
3 papers in the same direction as this paper · 8 in the opposite direction
- no effect
- negative
- negative
8 papers more in this group
See all 12 papers →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.