Abstract
Volunteer potato is a major weed pest of sweet corn in regions where winter soil temperatures fail to kill tubers left in the ground after harvest. Studies were conducted in 2004 to 2005 to determine the effect of combining atrazine with mesotrione applied POST on volunteer potato control and new tuber production in sweet corn. Mesotrione at 0.035, 0.07, and 0.1 kg/ha and atrazine at 0.3, 0.6, and 1.1 kg/ha were applied alone and in all possible combinations when volunteer potato ranged from 5 to 12 cm tall. Mesotrione applied alone at all rates, atrazine at 1.1 kg/ha, or mesotrione plus atrazine combinations reduced the number of new tubers produced to ≤ 1.1 per plant compared with 11 tubers per plant in nontreated checks. Potatoes treated with atrazine alone at 0.3 or 0.6 kg/ha produced 3.3 or 1.9 tubers per plant, respectively, which could lead to volunteer potato problems in the succeeding crop. Sweet corn yield was not affected by herbicide treatment in 2004 but was reduced in 2005 when atrazine was used alone at 0.3 or 0.6 kg/ha because of poor control of volunteer potato. Additional studies were conducted from 2004 to 2006 to determine volunteer potato control in sweet corn in reduced and conventional tillage and treated with fluroxypyr, mesotrione, or no herbicide. Volunteer potato control was improved and the number and weight of tubers was reduced 79 and 91%, respectively, in conventionally tilled plots treated with fluroxypyr compared with reduced-tillage plots. Control of volunteer potato with mesotrione was greater than 98% and reduced tuber number and weight greater than or equal to all other treatments regardless of tillage level.
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Claims 10
Claim · model-written summary
Mesotrione alone at all rates, atrazine at 1.1 kg/ha, or mesotrione plus atrazine combinations reduced new tuber production of volunteer potato to 1.1 or fewer per plant compared with 11 per plant in nontreated checks.
Verbatim
t0“Volunteer Potato”
e0“Mesotrione applied alone at all rates, atrazine at 1.1 kg/ha, or mesotrione plus atrazine combinations reduced the number of new tubers produced to ≤ 1.1 per plant compared with 11 tubers per plant in nontreated checks”
Claim · model-written summary
Volunteer potato treated with atrazine alone at 0.3 kg/ha produced 3.3 tubers per plant.
- Taxon
- Volunteer Potatot0
- Treatment
- atrazine alone at 0.3e0
- Outcome
- tubers per plante0
- Value
- 3.3e0
- Qualifier
- respectivelye0
Not reportedComparatorDirection
Verbatim
t0“Volunteer Potato”
e0“Potatoes treated with atrazine alone at 0.3 or 0.6 kg/ha produced 3.3 or 1.9 tubers per plant, respectively”
Claim · model-written summary
Volunteer potato treated with atrazine alone at 0.6 kg/ha produced 1.9 tubers per plant.
- Taxon
- Volunteer Potatot0
- Treatment
- atrazine alonee0
- Outcome
- tubers per plante0
- Value
- 1.9e0
- Qualifier
- 0.6 kg/hae0
Not reportedComparatorDirection
Verbatim
t0“Volunteer Potato”
e0“Potatoes treated with atrazine alone at 0.3 or 0.6 kg/ha produced 3.3 or 1.9 tubers per plant, respectively”
Claim · model-written summary
Sweet corn yield was not affected by herbicide treatment in 2004.
- Taxon
- Sweet corne0
- Treatment
- herbicide treatmente0
- Outcome
- Sweet corn yielde0
- Direction
- not affectede0
- Qualifier
- 2004e0
Not reportedComparator
Verbatim
e0“Sweet corn yield was not affected by herbicide treatment in 2004”
Claim · model-written summary
Sweet corn yield was reduced in 2005 when atrazine was used alone at 0.3 or 0.6 kg/ha because of poor control of volunteer potato.
- Taxon
- Sweet corne0
- Treatment
- atrazine was used alone at 0.3 or 0.6 kg/hae0
- Interactor
- volunteer potatoe0weed
- Outcome
- Sweet corn yielde0
- Direction
- reducede0
- Qualifier
- 2005e0
Not reportedComparator
Verbatim
e0“Sweet corn yield was not affected by herbicide treatment in 2004 but was reduced in 2005 when atrazine was used alone at 0.3 or 0.6 kg/ha because of poor control of volunteer potato”
Claim · model-written summary
Volunteer potato control was improved in conventionally tilled plots treated with fluroxypyr compared with reduced-tillage plots.
Verbatim
e0“Volunteer potato control was improved and the number and weight of tubers was reduced 79 and 91%, respectively, in conventionally tilled plots treated with fluroxypyr compared with reduced-tillage plots”
Claim · model-written summary
The number of volunteer potato tubers was reduced by 79 in conventionally tilled plots treated with fluroxypyr compared with reduced-tillage plots.
Verbatim
e0“Volunteer potato control was improved and the number and weight of tubers was reduced 79 and 91%, respectively, in conventionally tilled plots treated with fluroxypyr compared with reduced-tillage plots”
Claim · model-written summary
The weight of volunteer potato tubers was reduced by 91% in conventionally tilled plots treated with fluroxypyr compared with reduced-tillage plots.
Verbatim
e0“Volunteer potato control was improved and the number and weight of tubers was reduced 79 and 91%, respectively, in conventionally tilled plots treated with fluroxypyr compared with reduced-tillage plots”
Claim · model-written summary
Control of volunteer potato with mesotrione was greater than 98% regardless of tillage level.
- Taxon
- volunteer potatoe0
- Treatment
- mesotrionee0
- Outcome
- Control of volunteer potatoe0
- Direction
- greatere0
- Value
- 98%e0
- Qualifier
- regardless of tillage levele0
Not reportedComparator
Verbatim
e0“Control of volunteer potato with mesotrione was greater than 98% and reduced tuber number and weight greater than or equal to all other treatments regardless of tillage level”
Claim · model-written summary
Mesotrione reduced volunteer potato tuber number and weight greater than or equal to all other treatments regardless of tillage level.
Verbatim
e0“Control of volunteer potato with mesotrione was greater than 98% and reduced tuber number and weight greater than or equal to all other treatments regardless of tillage level”
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