Abstract
A field study was conducted over 2 yr to evaluate red morningglory control and sugarcane injury with herbicides applied below the sugarcane canopy in late May to early June following the layby cultivation. Rainfall to activate herbicides was received within the first 2 wk after application at the two sites in 1997, but not at the two sites in 1998. Red morningglory control for most herbicides 21 d after treatment (DAT) in both years was at least 90% and was attributed to postemergence activity of the herbicides and limited weed reinfestation following cultivation and herbicide application. At 45 DAT, red morningglory control with sulfentrazone was maximized (87 to 100%) at 0.14 kg ai/ha at three of four sites. Control with azafeniden was less consistent and, to achieve the same level of control as for sulfentrazone, 0.42 kg ai/ha azafeniden was needed in 1997 and 0.84 kg/ha in 1998. The currently registered herbicides atrazine, diuron, metribuzin, and terbacil controlled red morningglory no more than 83%, 45 DAT at three of the four sites. Of these herbicides, terbacil was the least effective. Even in 1997 at one site when the herbicide was rainfall activated early, red morningglory control with sulfentrazone at 0.14 kg/ha and azafeniden at 0.42 kg/ha 45 DAT was still greater than with the currently registered herbicides. Sugarcane injury expressed as foliage discoloration 21 DAT was 7 to 18% for sulfentrazone at 0.14 kg/ha and 15 to 31% for azafeniden at 0.42 kg/ha. Plant recovery was rapid and none of the herbicide treatments evaluated reduced sugarcane stalk height or population in September.Nomenclature: Atrazine; azafeniden; diuron; metribuzin; sulfentrazone; terbacil; red morningglory, Ipomoea coccinea L. #3 IPOCC; sugarcane, Saccharum spp. # SACCH, ‘LCP 85-384’, ‘CP 70-321’.Additional index words: Crop tolerance, final interrow cultivation, layby.Abbreviations: DAT, days after treatment; POST, postemergence; PRE, preemergence.
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Claims 13
Claim · model-written summary
Red morningglory control was at least 90% for most herbicides 21 days after treatment in both years.
- Taxon
- Sugarcanet0
- Interactor
- red morningglory
Ipomoea coccineae0weed - Outcome
- Red morningglory controle0
- Value
- at least 90%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Sugarcane (Saccharum spp.)”
e0“Red morningglory control for most herbicides 21 d after treatment (DAT) in both years was at least 90%”
Claim · model-written summary
At 45 days after treatment, sulfentrazone maximized red morningglory control (87 to 100%) at three of four sites.
- Taxon
- Sugarcanet0
- Treatment
- sulfentrazonee1
- Interactor
- red morninggloryIpomoea coccineae1weed
- Outcome
- red morningglory controle1
- Direction
- maximizede1
- Value
- 87 to 100%e1
- Qualifier
- At 45 DATe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Sugarcane (Saccharum spp.)”
e1“At 45 DAT, red morningglory control with sulfentrazone was maximized (87 to 100%) at 0.14 kg ai/ha at three of four sites”
Claim · model-written summary
Azafeniden gave less consistent red morningglory control than sulfentrazone.
- Taxon
- Sugarcanet0
- Treatment
- azafenidene2
- Interactor
- red morninggloryIpomoea coccineae0weed
- Outcome
- Controle2
- Direction
- less consistente2
- Comparator
- sulfentrazonee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Sugarcane (Saccharum spp.)”
e0“Red morningglory control for most herbicides 21 d after treatment (DAT) in both years was at least 90%”
e2“Control with azafeniden was less consistent and, to achieve the same level of control as for sulfentrazone, 0.42 kg ai/ha azafeniden was needed in 1997 and 0.84 kg/ha in 1998”
Claim · model-written summary
Azafeniden at 0.42 kg ai/ha was needed in 1997 to match the control obtained with sulfentrazone.
- Taxon
- Sugarcanet0
- Treatment
- azafenidene2
- Interactor
- red morninggloryIpomoea coccineae0weed
- Outcome
- level of controle2
- Value
- 0.42 kg ai/hae2
- Qualifier
- in 1997e2
- Comparator
- sulfentrazonee2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Sugarcane (Saccharum spp.)”
e0“Red morningglory control for most herbicides 21 d after treatment (DAT) in both years was at least 90%”
e2“Control with azafeniden was less consistent and, to achieve the same level of control as for sulfentrazone, 0.42 kg ai/ha azafeniden was needed in 1997 and 0.84 kg/ha in 1998”
Claim · model-written summary
Azafeniden at 0.84 kg/ha was needed in 1998 to match the control obtained with sulfentrazone.
- Taxon
- Sugarcanet0
- Treatment
- azafenidene2
- Interactor
- red morninggloryIpomoea coccineae0weed
- Outcome
- level of controle2
- Value
- 0.84 kg/hae2
- Qualifier
- in 1998e2
- Comparator
- sulfentrazonee2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Sugarcane (Saccharum spp.)”
e0“Red morningglory control for most herbicides 21 d after treatment (DAT) in both years was at least 90%”
e2“Control with azafeniden was less consistent and, to achieve the same level of control as for sulfentrazone, 0.42 kg ai/ha azafeniden was needed in 1997 and 0.84 kg/ha in 1998”
Claim · model-written summary
The currently registered herbicides atrazine, diuron, metribuzin and terbacil controlled red morningglory to no more than 83%.
- Taxon
- Sugarcanet0
- Treatment
- atrazine, diuron, metribuzin, and terbacile3
- Interactor
- red morninggloryIpomoea coccineae3weed
- Outcome
- controlled red morningglorye3
- Direction
- no more thane3
- Value
- 83%e3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Sugarcane (Saccharum spp.)”
e3“The currently registered herbicides atrazine, diuron, metribuzin, and terbacil controlled red morningglory no more than 83%, 45 DAT at three of the four sites”
Claim · model-written summary
Terbacil was the least effective of the registered herbicides against red morningglory.
- Taxon
- Sugarcanet0
- Treatment
- terbacile4
- Interactor
- red morninggloryIpomoea coccineae3weed
- Outcome
- least effectivee4
- Direction
- least effectivee4
- Comparator
- these herbicidese4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Sugarcane (Saccharum spp.)”
e3“The currently registered herbicides atrazine, diuron, metribuzin, and terbacil controlled red morningglory no more than 83%, 45 DAT at three of the four sites”
e4“Of these herbicides, terbacil was the least effective”
Claim · model-written summary
Sulfentrazone gave greater red morningglory control than the currently registered herbicides after early rainfall activation in 1997.
- Taxon
- Sugarcanet0
- Treatment
- sulfentrazonee5
- Interactor
- red morninggloryIpomoea coccineae5weed
- Outcome
- red morningglory controle5
- Direction
- greatere5
- Qualifier
- Even in 1997 at one site when the herbicide was rainfall activated earlye5
- Comparator
- currently registered herbicidese5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Sugarcane (Saccharum spp.)”
e5“Even in 1997 at one site when the herbicide was rainfall activated early, red morningglory control with sulfentrazone at 0.14 kg/ha and azafeniden at 0.42 kg/ha 45 DAT was still greater than with the currently registered herbicides”
Claim · model-written summary
Azafeniden gave greater red morningglory control than the currently registered herbicides after early rainfall activation in 1997.
- Taxon
- Sugarcanet0
- Treatment
- azafenidene5
- Interactor
- red morninggloryIpomoea coccineae5weed
- Outcome
- red morningglory controle5
- Direction
- greatere5
- Qualifier
- Even in 1997 at one site when the herbicide was rainfall activated earlye5
- Comparator
- currently registered herbicidese5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in Sugarcane (Saccharum spp.)”
e5“Even in 1997 at one site when the herbicide was rainfall activated early, red morningglory control with sulfentrazone at 0.14 kg/ha and azafeniden at 0.42 kg/ha 45 DAT was still greater than with the currently registered herbicides”
Claim · model-written summary
Sulfentrazone at 0.14 kg/ha caused 7 to 18% sugarcane foliage injury at 21 days after treatment.
- Taxon
- Sugarcanet0
- Treatment
- sulfentrazonee6
- Outcome
- Sugarcane injury expressed as foliage discoloratione6
- Direction
- increaseinferrede6
- Value
- 7 to 18%e6
Not reportedComparator
Verbatim
t0“in Sugarcane (Saccharum spp.)”
e6“Sugarcane injury expressed as foliage discoloration 21 DAT was 7 to 18% for sulfentrazone at 0.14 kg/ha and 15 to 31% for azafeniden at 0.42 kg/ha”
Claim · model-written summary
Azafeniden at 0.42 kg/ha caused 15 to 31% sugarcane foliage injury at 21 days after treatment.
- Taxon
- Sugarcanet0
- Treatment
- azafenidene6
- Outcome
- Sugarcane injury expressed as foliage discoloratione6
- Direction
- increaseinferrede6
- Value
- 15 to 31%e6
Not reportedComparator
Verbatim
t0“in Sugarcane (Saccharum spp.)”
e6“Sugarcane injury expressed as foliage discoloration 21 DAT was 7 to 18% for sulfentrazone at 0.14 kg/ha and 15 to 31% for azafeniden at 0.42 kg/ha”
Claim · model-written summary
No herbicide treatment reduced sugarcane stalk height or population in September.
- Taxon
- Sugarcanet0
- Treatment
- herbicide treatmentse7
- Outcome
- sugarcane stalk height or populatione7
- Direction
- no_changeinferrede7
Not reportedComparator
Verbatim
t0“in Sugarcane (Saccharum spp.)”
e7“Plant recovery was rapid and none of the herbicide treatments evaluated reduced sugarcane stalk height or population in September”
Claim · model-written summary
Sugarcane plant recovery after the herbicide treatments was rapid.
Verbatim
t0“in Sugarcane (Saccharum spp.)”
e7“Plant recovery was rapid and none of the herbicide treatments evaluated reduced sugarcane stalk height or population in September”
The same questions in other papers
atrazine · Ipomoea coccinea · Saccharum officinarum (sugarcane)Positive and negative results
1 in the opposite direction
- positive
sulfentrazone · Ipomoea coccinea · Saccharum officinarum (sugarcane)Results agree
1 paper in the same direction as this paper
- positive
herbicide · pest · Saccharum officinarum (sugarcane)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
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.