Abstract
Field studies were conducted in 1999 and 2000 at Simcoe and Exeter, Ontario to determine the effect of glufosinate, applied alone or in combination with s-metolachlor/atrazine, on weed control and crop safety on six glufosinate-resistant Bt sweet corn cultivars. A single application of glufosinate at 0.5 or 1.0 kg ha -1 gave 89% or better control of redroot pigweed, common ragweed, wild buckwheat and lady’s-thumb in 1999 and pale smartweed and redroot pigweed in 2000. Glufosinate applied alone gave reduced control of wild buckwheat and barnyard grass in 2000 and reduced control of crab grass in 1999 and 2000 at Simcoe. S-metolachlor/atrazine applied preemergence, followed by glufosinate postemergence, improved control of these species. In the untreated control, yield of all cultivars, except Bonus Bt at Exeter, was reduced at all locations. Yield of Cupola Bt and SS Jubilee Bt was reduced when glufosinate was applied alone at 0.5 kg ha -1 . Yield of Cupola Bt, Empire Bt and SS Jubilee Bt was reduced with s-metolachlor/atrazine used alone. Maximum yields were obtained with a sequential treatment of s-metolachlor/atrazine followed by glufosinate. Glufosinate did not cause any injury, plant height reduction or delayed maturity of any glufosinate-resistant Bt sweet corn cultivars. Key words: Cultivar, sensitivity, herbicide injury, glufosinate, Zea mays
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Claims 10
Claim · model-written summary
A single application of glufosinate at 0.5 or 1.0 kg ha -1 gave 89% or better control of redroot pigweed and common ragweed.
- Taxon
- sweet corne1
- Treatment
- A single application of glufosinate at 0.5 or 1.0 kg ha -1e2
- Interactor
- redroot pigweede2weed
- Second interactor
- common ragweed
Ambrosia artemisiifoliae2weed - Outcome
- control of redroot pigweed, common ragweede2
- Direction
- increaseinferrede2
- Value
- 89% or bettere2
- Qualifier
- wild buckwheat and lady’s-thumb in 1999e2
- Setting
- Simcoe and Exeter, Ontarioe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field studies were conducted in 1999 and 2000 at Simcoe and Exeter, Ontario”
e1“crop safety on six glufosinate-resistant Bt sweet corn cultivars”
e2“A single application of glufosinate at 0.5 or 1.0 kg ha -1 gave 89% or better control of redroot pigweed, common ragweed, wild buckwheat and lady’s-thumb in 1999 and pale smartweed and redroot pigweed in 2000”
Claim · model-written summary
Glufosinate gave 89% or better control of pale smartweed and redroot pigweed in 2000.
- Taxon
- sweet corne1
- Treatment
- A single application of glufosinate at 0.5 or 1.0 kg ha -1e2
- Interactor
- pale smartweede2weed
- Second interactor
- redroot pigweede2weed
- Outcome
- pale smartweed and redroot pigweede2
- Direction
- increaseinferrede2
- Value
- 89% or bettere2
- Qualifier
- in 2000e2
Not reportedComparator
Verbatim
e1“crop safety on six glufosinate-resistant Bt sweet corn cultivars”
e2“A single application of glufosinate at 0.5 or 1.0 kg ha -1 gave 89% or better control of redroot pigweed, common ragweed, wild buckwheat and lady’s-thumb in 1999 and pale smartweed and redroot pigweed in 2000”
Claim · model-written summary
Glufosinate applied alone reduced control of wild buckwheat and barnyard grass in 2000.
- Taxon
- sweet corne1
- Treatment
- Glufosinate applied alonee3
- Interactor
- wild buckwheat
Fallopia convolvuluse3weed - Second interactor
- barnyard grass
Echinochloa crus-gallie3weed - Outcome
- control of wild buckwheat and barnyard grasse3
- Direction
- reducede3
- Qualifier
- in 2000e3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“crop safety on six glufosinate-resistant Bt sweet corn cultivars”
e3“Glufosinate applied alone gave reduced control of wild buckwheat and barnyard grass in 2000 and reduced control of crab grass in 1999 and 2000 at Simcoe”
Claim · model-written summary
Glufosinate applied alone reduced control of crab grass in 1999 and 2000 at Simcoe.
- Taxon
- sweet corne1
- Treatment
- Glufosinate applied alonee3
- Interactor
- crab grasse3weed
- Outcome
- control of crab grasse3
- Direction
- reducede3
- Qualifier
- in 1999 and 2000e3
- Setting
- Simcoee3
Not reportedComparator
Verbatim
e1“crop safety on six glufosinate-resistant Bt sweet corn cultivars”
e3“Glufosinate applied alone gave reduced control of wild buckwheat and barnyard grass in 2000 and reduced control of crab grass in 1999 and 2000 at Simcoe”
Claim · model-written summary
S-metolachlor/atrazine applied preemergence followed by glufosinate postemergence improved control of these weed species.
- Taxon
- sweet corne1
- Treatment
- S-metolachlor/atrazine applied preemergence, followed by glufosinate postemergencee4
- Outcome
- control of these speciese4
- Direction
- improvede4
Not reportedComparator
Verbatim
e1“crop safety on six glufosinate-resistant Bt sweet corn cultivars”
e4“S-metolachlor/atrazine applied preemergence, followed by glufosinate postemergence, improved control of these species”
Claim · model-written summary
In the untreated control, yield of all cultivars except Bonus Bt was reduced at all locations.
Verbatim
e1“crop safety on six glufosinate-resistant Bt sweet corn cultivars”
e5“In the untreated control, yield of all cultivars, except Bonus Bt at Exeter, was reduced at all locations”
Claim · model-written summary
Glufosinate applied alone at 0.5 kg ha -1 reduced yield of Cupola Bt and SS Jubilee Bt.
- Taxon
- sweet corne1
- Material
- Cupola Bt and SS Jubilee Bte6
- Treatment
- glufosinate was applied alone at 0.5 kg ha -1e6
- Outcome
- Yielde6
- Direction
- reducede6
Not reportedComparator
Verbatim
e1“crop safety on six glufosinate-resistant Bt sweet corn cultivars”
e6“Yield of Cupola Bt and SS Jubilee Bt was reduced when glufosinate was applied alone at 0.5 kg ha -1”
Claim · model-written summary
S-metolachlor/atrazine used alone reduced yield of Cupola Bt, Empire Bt and SS Jubilee Bt.
- Taxon
- sweet corne1
- Material
- Cupola Bt, Empire Bt and SS Jubilee Bte7
- Treatment
- s-metolachlor/atrazine used alonee7
- Outcome
- Yielde7
- Direction
- reducede7
Not reportedComparator
Verbatim
e1“crop safety on six glufosinate-resistant Bt sweet corn cultivars”
e7“Yield of Cupola Bt, Empire Bt and SS Jubilee Bt was reduced with s-metolachlor/atrazine used alone”
Claim · model-written summary
Maximum yields were obtained with s-metolachlor/atrazine followed by glufosinate.
- Taxon
- sweet corne1
- Treatment
- sequential treatment of s-metolachlor/atrazine followed by glufosinatee2
- Outcome
- yieldse2
- Direction
- Maximume2
Not reportedComparator
Verbatim
e1“crop safety on six glufosinate-resistant Bt sweet corn cultivars”
e2“Maximum yields were obtained with a sequential treatment of s-metolachlor/atrazine followed by glufosinate”
Claim · model-written summary
Glufosinate did not cause injury, plant height reduction or delayed maturity of glufosinate-resistant Bt sweet corn cultivars.
- Taxon
- sweet corne1
- Material
- glufosinate-resistant Bt sweet corn cultivarse2
- Treatment
- Glufosinatee2
- Outcome
- injury, plant height reduction or delayed maturitye2
- Direction
- did not causee2
Not reportedComparator
Verbatim
e1“crop safety on six glufosinate-resistant Bt sweet corn cultivars”
e2“Glufosinate did not cause any injury, plant height reduction or delayed maturity of any glufosinate-resistant Bt sweet corn cultivars”
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