Abstract
Abstract Field studies were conducted in 2015 and 2016 in North Carolina to determine the response of ‘Covington’ and ‘Murasaki-29’ sweetpotato cultivars to four rates of linuron (420, 560, 840, and 1,120 g ai ha –1 ) alone or with S -metolachlor (803 g ai ha –1 ) applied 7 or 14 d after transplanting (DAP). Injury (chlorosis/necrosis and stunting) to both cultivars was greater when linuron was applied with S -metolachlor as compared to linuron applied alone. Herbicide application at 14 DAP caused greater injury (chlorosis/necrosis and stunting) to both cultivars than when applied at 7 DAP. At 4 wk after treatment (WAT), stunting of Covington and Murasaki-29 (hereafter Murasaki) from linuron at 420 to 1,120 g ha –1 increased from 27% to 50% and 25% to 53%, respectively. At 7 or 8 WAT, crop stunting of 8% or less and 0% was observed in Covington and Murasaki, respectively, regardless of application rate and timing. Murasaki root yields were similar in the linuron alone or with S -metolachlor treatments, and were lower than the nontreated check. In 2016, no. 1 and marketable sweetpotato yields of Covington were similar for the nontreated check, linuron alone, or linuron plus S -metolachlor treatments, but not in 2015. Decreases in no. 1 and marketable root yields were observed when herbicides were applied 14 DAP compared to 7 DAP for Covington in 2015 and for Murasaki in both years. No. 1 and marketable yields of Covington were similar for 420 to 1,120 g ha –1 linuron and nontreated check except marketable root yields in 2015. No. 1 and marketable sweetpotato yields of Murasaki decreased as application rates increased.
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Claims 13
Claim · model-written summary
Injury (chlorosis/necrosis and stunting) to both sweetpotato cultivars was greater when linuron was applied with S-metolachlor than when linuron was applied alone.
- Taxon
- Sweetpotato
_Flower.jpg?width=60)
Ipomoea batatast0 - Treatment
- linuron was applied with S -metolachlore1
- Outcome
- Injury (chlorosis/necrosis and stunting)e1
- Direction
- greatere1
- Comparator
- linuron applied alonee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e1“Injury (chlorosis/necrosis and stunting) to both cultivars was greater when linuron was applied with S -metolachlor as compared to linuron applied alone”
t0“Sweetpotato”
Claim · model-written summary
Herbicide application 14 DAP caused greater injury (chlorosis/necrosis and stunting) to both cultivars than application 7 DAP.
- Taxon
- SweetpotatoIpomoea batatast0
- Treatment
- Herbicide application at 14 DAPe1
- Outcome
- injury (chlorosis/necrosis and stunting)e1
- Direction
- greatere1
- Comparator
- 7 DAPe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Herbicide application at 14 DAP caused greater injury (chlorosis/necrosis and stunting) to both cultivars than when applied at 7 DAP”
t0“Sweetpotato”
Claim · model-written summary
At 4 WAT, stunting of Covington increased from 27% to 50% as linuron rate increased from 420 to 1,120 g ha-1.
- Taxon
- SweetpotatoIpomoea batatast0
- Material
- Covingtone1
- Treatment
- linuron at 420 to 1,120 g ha –1e1
- Outcome
- stuntinge1
- Direction
- increasede1
- Value
- 27% to 50%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“At 4 wk after treatment (WAT), stunting of Covington and Murasaki-29 (hereafter Murasaki) from linuron at 420 to 1,120 g ha –1 increased from 27% to 50% and 25% to 53%, respectively”
t0“Sweetpotato”
Claim · model-written summary
At 4 WAT, stunting of Murasaki-29 increased from 25% to 53% as linuron rate increased from 420 to 1,120 g ha-1.
- Taxon
- SweetpotatoIpomoea batatast0
- Material
- Murasaki-29e1
- Treatment
- linuron at 420 to 1,120 g ha –1e1
- Outcome
- stuntinge1
- Direction
- increasede1
- Value
- 25% to 53%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“At 4 wk after treatment (WAT), stunting of Covington and Murasaki-29 (hereafter Murasaki) from linuron at 420 to 1,120 g ha –1 increased from 27% to 50% and 25% to 53%, respectively”
t0“Sweetpotato”
Claim · model-written summary
At 7 or 8 WAT, crop stunting in Covington was 8% or less regardless of application rate and timing.
- Taxon
- SweetpotatoIpomoea batatast0
- Material
- Covingtone1
- Outcome
- crop stuntinge1
- Value
- 8% or lesse1
- Qualifier
- regardless of application rate and timinge1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“At 7 or 8 WAT, crop stunting of 8% or less and 0% was observed in Covington and Murasaki, respectively, regardless of application rate and timing”
t0“Sweetpotato”
Claim · model-written summary
At 7 or 8 WAT, crop stunting in Murasaki was 0% regardless of application rate and timing.
- Taxon
- SweetpotatoIpomoea batatast0
- Material
- Murasakie1
- Outcome
- crop stuntinge1
- Value
- 0%e1
- Qualifier
- regardless of application rate and timinge1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“At 7 or 8 WAT, crop stunting of 8% or less and 0% was observed in Covington and Murasaki, respectively, regardless of application rate and timing”
t0“Sweetpotato”
Claim · model-written summary
Murasaki root yields with linuron alone or with S-metolachlor were lower than the nontreated check.
- Taxon
- SweetpotatoIpomoea batatast0
- Material
- Murasakie1
- Treatment
- linuron alone or with S -metolachlor treatmentse1
- Outcome
- root yieldse1
- Direction
- lowere1
- Comparator
- nontreated checke1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Murasaki root yields were similar in the linuron alone or with S -metolachlor treatments, and were lower than the nontreated check”
t0“Sweetpotato”
Claim · model-written summary
Murasaki root yields were similar with linuron alone and with linuron plus S-metolachlor.
- Taxon
- SweetpotatoIpomoea batatast0
- Material
- Murasakie1
- Treatment
- with S -metolachlor treatmentse1
- Outcome
- root yieldse1
- Direction
- similare1
- Comparator
- linuron alonee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Murasaki root yields were similar in the linuron alone or with S -metolachlor treatments, and were lower than the nontreated check”
t0“Sweetpotato”
Claim · model-written summary
In 2016, no. 1 and marketable yields of Covington were similar for the nontreated check, linuron alone and linuron plus S-metolachlor, but not in 2015.
- Taxon
- SweetpotatoIpomoea batatast0
- Material
- Covingtone1
- Treatment
- linuron alone, or linuron plus S -metolachlor treatmentse1
- Outcome
- no. 1 and marketable sweetpotato yieldse1
- Direction
- similare1
- Qualifier
- but not in 2015e1
- Comparator
- nontreated checke1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In 2016, no. 1 and marketable sweetpotato yields of Covington were similar for the nontreated check, linuron alone, or linuron plus S -metolachlor treatments, but not in 2015”
t0“Sweetpotato”
Claim · model-written summary
No. 1 and marketable root yields of Covington decreased in 2015 when herbicides were applied 14 DAP compared to 7 DAP.
- Taxon
- SweetpotatoIpomoea batatast0
- Material
- Covingtone1
- Treatment
- herbicides were applied 14 DAPe1
- Outcome
- no. 1 and marketable root yieldse1
- Direction
- Decreasese1
- Qualifier
- in 2015e1
- Comparator
- 7 DAPe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Decreases in no. 1 and marketable root yields were observed when herbicides were applied 14 DAP compared to 7 DAP for Covington in 2015 and for Murasaki in both years”
t0“Sweetpotato”
Claim · model-written summary
No. 1 and marketable root yields of Murasaki decreased in both years when herbicides were applied 14 DAP compared to 7 DAP.
- Taxon
- SweetpotatoIpomoea batatast0
- Material
- Murasakie1
- Treatment
- herbicides were applied 14 DAPe1
- Outcome
- no. 1 and marketable root yieldse1
- Direction
- Decreasese1
- Qualifier
- in both yearse1
- Comparator
- 7 DAPe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Decreases in no. 1 and marketable root yields were observed when herbicides were applied 14 DAP compared to 7 DAP for Covington in 2015 and for Murasaki in both years”
t0“Sweetpotato”
Claim · model-written summary
No. 1 and marketable yields of Covington with 420 to 1,120 g ha-1 linuron were similar to the nontreated check, except marketable root yields in 2015.
- Taxon
- SweetpotatoIpomoea batatast0
- Material
- Covingtone1
- Treatment
- 420 to 1,120 g ha –1 linurone1
- Outcome
- No. 1 and marketable yieldse1
- Direction
- similare1
- Qualifier
- except marketable root yields in 2015e1
- Comparator
- nontreated checke1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“No. 1 and marketable yields of Covington were similar for 420 to 1,120 g ha –1 linuron and nontreated check except marketable root yields in 2015”
t0“Sweetpotato”
Claim · model-written summary
No. 1 and marketable sweetpotato yields of Murasaki decreased as linuron application rates increased.
- Taxon
- SweetpotatoIpomoea batatast0
- Material
- Murasakie1
- Treatment
- application ratese1
- Outcome
- No. 1 and marketable sweetpotato yieldse1
- Direction
- decreasede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“No. 1 and marketable sweetpotato yields of Murasaki decreased as application rates increased”
t0“Sweetpotato”
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2 papers in the same direction as this paper
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3 papers in the same direction as this paper · 2 in the opposite direction
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See all 6 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.