Abstract
Quackgrass is a serious weed problem in the northern United States and southern Canada. Field experiments were conducted in 1990 and 1991 to examine the effect of herbicide rate, application timing, quackgrass growth stage, and cultivation on quackgrass control with nicosulfuron and primisulfuron in corn. Nicosulfuron (35 g ai/ha) and primisulfuron (40 g ai/ha) each provided 84% or greater control of two-leaf plants and 93% or greater control of four-leaf quackgrass plants. Sequential applications of both nicosulfuron and primisulfuron provided greater season-long control than single applications of the same rate on two-leaf but not four-leaf quackgrass. Cultivation 10 d after nicosulfuron or primisulfuron application often increased early-season control, but by corn harvest few differences were observed. Postemergence (POST) applications of nicosulfuron and primisulfuron provided at least 88% control, compared with 66 to 86% from an early preplant application of glyphosate. Corn yields were similar regardless of the quackgrass control program.
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Claims 10
Claim · model-written summary
Nicosulfuron (35 g ai/ha) gave 84% or greater control of two-leaf quackgrass plants.
- Taxon
- corn
Zea mays subsp. mayse0 - Organ / stage
- two-leaf plantse1
- Treatment
- Nicosulfuron (35 g ai/ha)e1
- Interactor
- quackgrasse1weed
- Outcome
- control of two-leaf plantse1
- Direction
- greatere1
- Value
- 84% or greatere1
- Setting
- Field experimentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted in 1990 and 1991 to examine the effect of herbicide rate, application timing, quackgrass growth stage, and cultivation on quackgrass control with nicosulfuron and primisulfuron in corn”
e1“Nicosulfuron (35 g ai/ha) and primisulfuron (40 g ai/ha) each provided 84% or greater control of two-leaf plants and 93% or greater control of four-leaf quackgrass plants”
Claim · model-written summary
Primisulfuron (40 g ai/ha) gave 84% or greater control of two-leaf quackgrass plants.
- Taxon
- cornZea mays subsp. mayse0
- Organ / stage
- two-leaf plantse1
- Treatment
- primisulfuron (40 g ai/ha)e1
- Interactor
- quackgrasse1weed
- Outcome
- control of two-leaf plantse1
- Direction
- greatere1
- Value
- 84% or greatere1
- Setting
- Field experimentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted in 1990 and 1991 to examine the effect of herbicide rate, application timing, quackgrass growth stage, and cultivation on quackgrass control with nicosulfuron and primisulfuron in corn”
e1“Nicosulfuron (35 g ai/ha) and primisulfuron (40 g ai/ha) each provided 84% or greater control of two-leaf plants and 93% or greater control of four-leaf quackgrass plants”
Claim · model-written summary
Nicosulfuron (35 g ai/ha) gave 93% or greater control of four-leaf quackgrass plants.
- Taxon
- cornZea mays subsp. mayse0
- Organ / stage
- four-leafe1
- Treatment
- Nicosulfuron (35 g ai/ha)e1
- Interactor
- quackgrasse1weed
- Outcome
- control of four-leaf quackgrass plantse1
- Direction
- greatere1
- Value
- 93% or greatere1
- Setting
- Field experimentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted in 1990 and 1991 to examine the effect of herbicide rate, application timing, quackgrass growth stage, and cultivation on quackgrass control with nicosulfuron and primisulfuron in corn”
e1“Nicosulfuron (35 g ai/ha) and primisulfuron (40 g ai/ha) each provided 84% or greater control of two-leaf plants and 93% or greater control of four-leaf quackgrass plants”
Claim · model-written summary
Primisulfuron (40 g ai/ha) gave 93% or greater control of four-leaf quackgrass plants.
- Taxon
- cornZea mays subsp. mayse0
- Organ / stage
- four-leafe1
- Treatment
- primisulfuron (40 g ai/ha)e1
- Interactor
- quackgrasse1weed
- Outcome
- control of four-leaf quackgrass plantse1
- Direction
- greatere1
- Value
- 93% or greatere1
- Setting
- Field experimentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted in 1990 and 1991 to examine the effect of herbicide rate, application timing, quackgrass growth stage, and cultivation on quackgrass control with nicosulfuron and primisulfuron in corn”
e1“Nicosulfuron (35 g ai/ha) and primisulfuron (40 g ai/ha) each provided 84% or greater control of two-leaf plants and 93% or greater control of four-leaf quackgrass plants”
Claim · model-written summary
Sequential applications of nicosulfuron and primisulfuron gave greater season-long quackgrass control than single applications on two-leaf plants.
- Taxon
- cornZea mays subsp. mayse0
- Organ / stage
- two-leafe2
- Treatment
- Sequential applications of both nicosulfuron and primisulfurone2
- Interactor
- quackgrasse2weed
- Outcome
- season-long controle2
- Direction
- greatere2
- Comparator
- single applications of the same ratee2
- Setting
- Field experimentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted in 1990 and 1991 to examine the effect of herbicide rate, application timing, quackgrass growth stage, and cultivation on quackgrass control with nicosulfuron and primisulfuron in corn”
e2“Sequential applications of both nicosulfuron and primisulfuron provided greater season-long control than single applications of the same rate on two-leaf but not four-leaf quackgrass”
Claim · model-written summary
Sequential applications of nicosulfuron and primisulfuron gave no greater season-long quackgrass control than single applications on four-leaf plants.
- Taxon
- cornZea mays subsp. mayse0
- Organ / stage
- four-leaf quackgrasse2
- Treatment
- Sequential applications of both nicosulfuron and primisulfurone2
- Interactor
- quackgrasse2weed
- Outcome
- season-long controle2
- Direction
- no_changeinferrede2
- Comparator
- single applications of the same ratee2
- Setting
- Field experimentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted in 1990 and 1991 to examine the effect of herbicide rate, application timing, quackgrass growth stage, and cultivation on quackgrass control with nicosulfuron and primisulfuron in corn”
e2“Sequential applications of both nicosulfuron and primisulfuron provided greater season-long control than single applications of the same rate on two-leaf but not four-leaf quackgrass”
Claim · model-written summary
Cultivation 10 days after herbicide application often increased early-season quackgrass control.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- Cultivation 10 d after nicosulfuron or primisulfuron applicatione3
- Outcome
- early-season controle3
- Direction
- increasede3
- Qualifier
- oftene3
- Setting
- Field experimentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted in 1990 and 1991 to examine the effect of herbicide rate, application timing, quackgrass growth stage, and cultivation on quackgrass control with nicosulfuron and primisulfuron in corn”
e3“Cultivation 10 d after nicosulfuron or primisulfuron application often increased early-season control, but by corn harvest few differences were observed”
Claim · model-written summary
By corn harvest, cultivation showed few differences in quackgrass control.
- Taxon
- cornZea mays subsp. mayse3
- Treatment
- Cultivation 10 d after nicosulfuron or primisulfuron applicatione3
- Outcome
- few differences were observede3
- Direction
- no_changeinferrede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Cultivation 10 d after nicosulfuron or primisulfuron application often increased early-season control, but by corn harvest few differences were observed”
Claim · model-written summary
Postemergence nicosulfuron and primisulfuron gave at least 88% quackgrass control, higher than an early preplant glyphosate application at 66 to 86%.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- Postemergence (POST) applications of nicosulfuron and primisulfurone4
- Interactor
- Quackgrasst0weed
- Outcome
- controle4
- Direction
- higherinferrede4
- Value
- at least 88%e4
- Qualifier
- 66 to 86%e4
- Comparator
- early preplant application of glyphosatee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field experiments were conducted in 1990 and 1991 to examine the effect of herbicide rate, application timing, quackgrass growth stage, and cultivation on quackgrass control with nicosulfuron and primisulfuron in corn”
e4“Postemergence (POST) applications of nicosulfuron and primisulfuron provided at least 88% control, compared with 66 to 86% from an early preplant application of glyphosate”
t0“Quackgrass (Elytrigia repens) Control in Corn (Zea mays)”
Claim · model-written summary
Corn yields were similar regardless of the quackgrass control program.
- Taxon
- CornZea mays subsp. mayse5
- Treatment
- quackgrass control programe5
- Interactor
- quackgrasse5weed
- Outcome
- yieldse5
- Direction
- no_changeinferrede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Corn yields were similar regardless of the quackgrass control program”
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See all 119 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.