Abstract
Studies were conducted in a stale field production system in 2012 and 2013 to determine the effect of herbicide timing on Palmer amaranth control and ‘Covington’ sweetpotato yield and quality. Treatments consisted of flumioxazin at 72, 90, or 109 g ai ha −1 applied 45 d before transplanting (DBT) or 1 DBT, or sequentially the same rate at 45 DBT followed by (fb) 1 DBT; flumioxazin 109 g ha −1 applied 1 DBT fb S -metolachlor (800 g ai ha −1 ) at 0, 6 (± 1), or 10 d after treatment (DAT); flumioxazin at 72, 90, or 109 g ha −1 plus clomazone (630 g ai ha −1 ) applied 45 DBT fb S -metolachlor (800 g ha −1 ) applied 10 DAT; and fomesafen alone at 280 g ai ha −1 applied 45 DBT. Nontreated weed-free and weedy controls were included for comparison. Flumioxazin application time had a significant effect on Palmer amaranth control and sweetpotato yields, and the effect of flumioxazin rate was not significant. Treatments consisting of sequential application of flumioxazin 45 DBT fb 1 DBT or flumioxazin plus clomazone 45 DBT fb S -metolachlor 10 DAT provided the maximum Palmer amaranth control and sweetpotato yields (jumbo, No. 1, jumbo plus No. 1, marketable) among all treatments. Delayed flumioxazin application timings until 1 DBT allowed Palmer amaranth emergence on stale seedbeds and resulted only in 65, 62, 48, and 17% control at 14, 32, 68, and 109 DAT, respectively. POST transplant S -metolachlor applications following flumioxazin 1 DBT did not improve Palmer amaranth control, because the majority of Palmer amaranth emerged prior to S -metolachlor application. A control program consisting of flumioxazin 109 g ha −1 plus clomazone 630 g ha −1 at 45 DBT fb S -metolachlor 800 g ha −1 at 0 to 10 DAT provides an effective herbicide program for Palmer amaranth control in stale seedbed production systems in North Carolina sweetpotato.
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Claims 5
Claim · model-written summary
Flumioxazin application time had a significant effect on Palmer amaranth control and sweetpotato yields; flumioxazin rate did not.
- Taxon
- sweetpotato
_Flower.jpg?width=60)
Ipomoea batatase1 - Treatment
- Flumioxazin application timee1
- Interactor
- Palmer amaranthe1weed
- Outcome
- Palmer amaranth control and sweetpotato yieldse1
- Qualifier
- the effect of flumioxazin rate was not significante1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
t0“Palmer Amaranth Control in a Stale Seedbed Sweetpotato Production System”
e1“Flumioxazin application time had a significant effect on Palmer amaranth control and sweetpotato yields, and the effect of flumioxazin rate was not significant”
Claim · model-written summary
Sequential flumioxazin 45 DBT fb 1 DBT, or flumioxazin plus clomazone 45 DBT fb S-metolachlor 10 DAT, gave the maximum Palmer amaranth control and sweetpotato yields among all treatments.
- Taxon
- sweetpotatoIpomoea batatase2
- Treatment
- sequential application of flumioxazin 45 DBT fb 1 DBTe2
- Interactor
- Palmer amaranthe2weed
- Outcome
- Palmer amaranth control and sweetpotato yieldse2
- Direction
- maximume2
- Comparator
- among all treatmentse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Palmer Amaranth Control in a Stale Seedbed Sweetpotato Production System”
e2“Treatments consisting of sequential application of flumioxazin 45 DBT fb 1 DBT or flumioxazin plus clomazone 45 DBT fb S -metolachlor 10 DAT provided the maximum Palmer amaranth control and sweetpotato yields (jumbo, No. 1, jumbo plus No. 1, marketable) among all treatments”
Claim · model-written summary
Delaying flumioxazin to 1 DBT allowed Palmer amaranth emergence and gave only 65, 62, 48 and 17% control at 14, 32, 68 and 109 DAT.
- Taxon
- SweetpotatoIpomoea batatast0
- Treatment
- Delayed flumioxazin application timings until 1 DBTe3
- Interactor
- Palmer amaranthe3weed
- Outcome
- controle3
- Direction
- lowerinferrede3
- Value
- 65, 62, 48, and 17%e3
- Qualifier
- at 14, 32, 68, and 109 DATe3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Palmer Amaranth Control in a Stale Seedbed Sweetpotato Production System”
e3“Delayed flumioxazin application timings until 1 DBT allowed Palmer amaranth emergence on stale seedbeds and resulted only in 65, 62, 48, and 17% control at 14, 32, 68, and 109 DAT, respectively”
Claim · model-written summary
POST transplant S-metolachlor after flumioxazin at 1 DBT did not improve Palmer amaranth control, because most Palmer amaranth emerged before the S-metolachlor application.
- Taxon
- SweetpotatoIpomoea batatast0
- Treatment
- POST transplant S -metolachlor applications following flumioxazin 1 DBTe4
- Interactor
- Palmer amaranthe4weed
- Outcome
- Palmer amaranth controle4
- Direction
- did not improvee4
- Qualifier
- because the majority of Palmer amaranth emerged prior to S -metolachlor applicatione4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Palmer Amaranth Control in a Stale Seedbed Sweetpotato Production System”
e4“POST transplant S -metolachlor applications following flumioxazin 1 DBT did not improve Palmer amaranth control, because the majority of Palmer amaranth emerged prior to S -metolachlor application”
Claim · model-written summary
Flumioxazin 109 g/ha plus clomazone 630 g/ha at 45 DBT followed by S-metolachlor at 0 to 10 DAT is an effective herbicide program for Palmer amaranth control in North Carolina sweetpotato.
- Taxon
- sweetpotatoIpomoea batatase5
- Treatment
- flumioxazin 109 g ha −1 plus clomazone 630 g ha −1 at 45 DBT fb S-metolachlor 800 g ha −1 at 0 to 10 DATe5
- Interactor
- Palmer amaranthe5weed
- Outcome
- Palmer amaranth controle5
- Setting
- North Carolinae5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Palmer Amaranth Control in a Stale Seedbed Sweetpotato Production System”
e5“A control program consisting of flumioxazin 109 g ha −1 plus clomazone 630 g ha −1 at 45 DBT fb S-metolachlor 800 g ha −1 at 0 to 10 DAT provides an effective herbicide program for Palmer amaranth control in stale seedbed production systems in North Carolina sweetpotato”
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See all 8 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.