Abstract
Research was conducted in 1987 and 1988 to identify effective horseweed control strategies in no-tillage soybean production. Paraquat at 560 g ai ha -1 plus metolachlor at 2200 g ai ha -1 , linuron at 840 g ai ha -1 , and nonionic surfactant at 0.25% (v/v) applied preemergence provided less than 61% horseweed control. Glyphosate at 840 g ai ha -1 , 2,4-D ester at 560 g ai ha -1 , HOE-39866 at 840 g ai ha -1 , or BAS-514 at 70 g ai ha -1 applied early preplant controlled more than 96% when followed by the above preemergence herbicide combination. Substituting either glyphosate at 840 g ha -1 or HOE-39866 at 840 g ha -1 for paraquat in the preemergence application program significantly increased control. Adding BAS-514 at 70 g ha -1 to preemergence treatments containing paraquat significantly improved control. The substitution of metribuzin, metribuzin plus chlorimuron (10:1 ratio), or linuron plus chlorimuron (16:1 ratio) for linuron resulted in greater control and soybean yield. Sequential applications controlled horseweed equal to or better than a single preemergence application at the same total rate.
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Claims 8
Claim · model-written summary
Paraquat plus metolachlor, with linuron and surfactant applied preemergence, gave less than 61% horseweed control.
- Taxon
- Soybeans
Glycine maxt0 - Treatment
- Paraquat at 560 g ai ha -1 plus metolachlor at 2200 g ai ha -1e1
- Interactor
- Conyza canadensis
Erigeron canadensist0weed - Outcome
- horseweed controle1
- Direction
- less thane1
- Value
- 61%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Horseweed (Conyza canadensis) Control in No-Tillage Soybeans (Glycine max)”
e1“Paraquat at 560 g ai ha -1 plus metolachlor at 2200 g ai ha -1 , linuron at 840 g ai ha -1 , and nonionic surfactant at 0.25% (v/v) applied preemergence provided less than 61% horseweed control”
Claim · model-written summary
Glyphosate, 2,4-D ester, HOE-39866 or BAS-514 applied early preplant controlled horseweed by more than 96% when followed by preemergence herbicides.
- Taxon
- SoybeansGlycine maxt0
- Treatment
- applied early preplante2
- Interactor
- Conyza canadensisErigeron canadensist0weed
- Outcome
- controle2
- Direction
- controllede2
- Value
- more than 96%e2
- Qualifier
- when followed by the above preemergence herbicide combinatione2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Horseweed (Conyza canadensis) Control in No-Tillage Soybeans (Glycine max)”
e2“Glyphosate at 840 g ai ha -1 , 2,4-D ester at 560 g ai ha -1 , HOE-39866 at 840 g ai ha -1 , or BAS-514 at 70 g ai ha -1 applied early preplant controlled more than 96% when followed by the above preemergence herbicide combination”
Claim · model-written summary
Substituting glyphosate or HOE-39866 for paraquat in the preemergence program significantly increased horseweed control.
- Taxon
- SoybeansGlycine maxt0
- Treatment
- Substituting either glyphosate at 840 g ha -1 or HOE-39866 at 840 g ha -1e3
- Interactor
- Conyza canadensisErigeron canadensist0weed
- Outcome
- controle3
- Direction
- significantly increasede3
- Comparator
- paraquate3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Horseweed (Conyza canadensis) Control in No-Tillage Soybeans (Glycine max)”
e3“Substituting either glyphosate at 840 g ha -1 or HOE-39866 at 840 g ha -1 for paraquat in the preemergence application program significantly increased control”
Claim · model-written summary
Adding BAS-514 to preemergence treatments containing paraquat significantly improved horseweed control.
- Taxon
- SoybeansGlycine maxt0
- Treatment
- Adding BAS-514 at 70 g ha -1e4
- Interactor
- Conyza canadensisErigeron canadensist0weed
- Outcome
- controle4
- Direction
- significantly improvede4
- Comparator
- preemergence treatments containing paraquate4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Horseweed (Conyza canadensis) Control in No-Tillage Soybeans (Glycine max)”
e4“Adding BAS-514 at 70 g ha -1 to preemergence treatments containing paraquat significantly improved control”
Claim · model-written summary
Substituting metribuzin for linuron gave greater horseweed control and soybean yield.
- Taxon
- SoybeansGlycine maxt0
- Treatment
- substitution of metribuzine5
- Interactor
- Conyza canadensisErigeron canadensist0weed
- Outcome
- control and soybean yielde5
- Direction
- greatere5
- Comparator
- linurone5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Horseweed (Conyza canadensis) Control in No-Tillage Soybeans (Glycine max)”
e5“The substitution of metribuzin, metribuzin plus chlorimuron (10:1 ratio), or linuron plus chlorimuron (16:1 ratio) for linuron resulted in greater control and soybean yield”
Claim · model-written summary
Substituting metribuzin plus chlorimuron (10:1 ratio) for linuron gave greater horseweed control and soybean yield.
- Taxon
- SoybeansGlycine maxt0
- Treatment
- metribuzin plus chlorimuron (10:1 ratio)e5
- Interactor
- Conyza canadensisErigeron canadensist0weed
- Outcome
- control and soybean yielde5
- Direction
- greatere5
- Comparator
- linurone5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Horseweed (Conyza canadensis) Control in No-Tillage Soybeans (Glycine max)”
e5“The substitution of metribuzin, metribuzin plus chlorimuron (10:1 ratio), or linuron plus chlorimuron (16:1 ratio) for linuron resulted in greater control and soybean yield”
Claim · model-written summary
Substituting linuron plus chlorimuron (16:1 ratio) for linuron gave greater horseweed control and soybean yield.
- Taxon
- SoybeansGlycine maxt0
- Treatment
- linuron plus chlorimuron (16:1 ratio)e5
- Interactor
- Conyza canadensisErigeron canadensist0weed
- Outcome
- control and soybean yielde5
- Direction
- greatere5
- Comparator
- linurone5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Horseweed (Conyza canadensis) Control in No-Tillage Soybeans (Glycine max)”
e5“The substitution of metribuzin, metribuzin plus chlorimuron (10:1 ratio), or linuron plus chlorimuron (16:1 ratio) for linuron resulted in greater control and soybean yield”
Claim · model-written summary
Sequential applications controlled horseweed equal to or better than a single preemergence application at the same total rate.
- Taxon
- SoybeansGlycine maxt0
- Treatment
- Sequential applicationse6
- Interactor
- Conyza canadensisErigeron canadensist0weed
- Outcome
- controlled horseweede6
- Direction
- equal to or better thane6
- Comparator
- a single preemergence applicatione6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Horseweed (Conyza canadensis) Control in No-Tillage Soybeans (Glycine max)”
e6“Sequential applications controlled horseweed equal to or better than a single preemergence application at the same total rate”
The same questions in other papers
paraquat · Erigeron canadensis · Glycine max (soybean)Positive and negative results
4 in the opposite direction
- positive
- positive
- positive
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See all 5 papers →metribuzin · Erigeron canadensis · Glycine max (soybean)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- positive
- positive
- no effect
3 papers more in this group
See all 7 papers →chlorimuron · Erigeron canadensis · Glycine max (soybean)Results agree
1 paper in the same direction as this paper
- positive
linuron · Erigeron canadensis · Glycine max (soybean)Results agree
2 papers in the same direction as this paper
- positive
- positive
glyphosate · Erigeron canadensis · Glycine max (soybean)Results agree
8 papers in the same direction as this paper
- positive
- positive
- positive
5 papers more in this group
See all 9 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.