Abstract
Abstract Field studies were conducted during 1984, 1985, and 1987 to evaluate weed control and the relative tolerance of peanuts (Arachis hypogaea) to alachlor and metolachlor when applied at rates from 2.2 to 13.4 kg ai/ha. Both single and split preemergence, and postemergence applications were included. In 1984 and 1985, neither herbicide adversely affected yields compared to a hand-weeded control. In 1987, metolachlor at a rate of 9.0 kg/ha and alachlor at 13.4 kg/ha reduced yields. Across all years, at least a two-fold safety factor existed between the maximum registered rate and the rate necessary for peanut injury. Occurrence of injury appears to be related to rainfall. Metolachlor was slightly more mobile than alachlor in soil chromatography trials, which may be a factor in its slightly greater propensity to be injurious under certain conditions of extensive leaching and/or slow peanut emergence.
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Claims 8
Claim · model-written summary
Alachlor did not adversely affect peanut yield in 1984 and 1985 versus hand weeding.
- Taxon
- Peanuts
Arachis hypogaeat0 - Treatment
- Alachlort0
- Outcome
- yieldse0
- Direction
- neither herbicide adversely affectede0
- Qualifier
- 1984 and 1985e0
- Comparator
- hand-weeded controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1984 and 1985, neither herbicide adversely affected yields compared to a hand-weeded control.”
t0“Peanuts to Alachlor and Metolachlor1”
Claim · model-written summary
Metolachlor did not adversely affect peanut yield in 1984 and 1985 versus hand weeding.
- Taxon
- PeanutsArachis hypogaeat0
- Treatment
- Metolachlort0
- Outcome
- yieldse0
- Direction
- neither herbicide adversely affectede0
- Qualifier
- 1984 and 1985e0
- Comparator
- hand-weeded controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1984 and 1985, neither herbicide adversely affected yields compared to a hand-weeded control.”
t0“Peanuts to Alachlor and Metolachlor1”
Claim · model-written summary
In 1987 metolachlor at 9.0 kg/ha reduced peanut yield.
- Taxon
- PeanutsArachis hypogaeat0
- Treatment
- metolachlor at a rate of 9.0 kg/hae0
- Outcome
- yieldse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1987, metolachlor at a rate of 9.0 kg/ha and alachlor at 13.4 kg/ha reduced yields.”
t0“Peanuts”
Claim · model-written summary
In 1987 alachlor at 13.4 kg/ha reduced peanut yield.
- Taxon
- PeanutsArachis hypogaeat0
- Treatment
- alachlor at 13.4 kg/hae0
- Outcome
- yieldse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1987, metolachlor at a rate of 9.0 kg/ha and alachlor at 13.4 kg/ha reduced yields.”
t0“Peanuts”
Claim · model-written summary
Peanut injury thresholds were at least twice the maximum registered rate across years.
- Taxon
- peanutArachis hypogaeae0
- Outcome
- safety factore0
- Value
- at least a two-folde0
- Comparator
- maximum registered ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Across all years, at least a two-fold safety factor existed between the maximum registered rate and the rate necessary for peanut injury.”
Claim · model-written summary
Peanut injury occurrence appeared related to rainfall.
- Taxon
- PeanutsArachis hypogaeat0
- Outcome
- Occurrence of injurye0
- Setting
- rainfalle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Occurrence of injury appears to be related to rainfall.”
t0“Peanuts”
Claim · model-written summary
Metolachlor was slightly more mobile than alachlor in soil chromatography.
- Taxon
- PeanutsArachis hypogaeat0
- Treatment
- Metolachlore0
- Outcome
- mobilee0
- Direction
- more mobilee0
- Comparator
- alachlore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Metolachlor was slightly more mobile than alachlor in soil chromatography trials, which may be a factor in its slightly greater propensity to be injurious under certain conditions of extensive leaching and/or slow peanut emergence.”
t0“Peanuts”
Claim · model-written summary
Metolachlor mobility may contribute to greater peanut injury under leaching or slow emergence.
- Taxon
- PeanutsArachis hypogaeat0
- Treatment
- Metolachlore0
- Outcome
- greater propensity to be injuriouse0
- Qualifier
- extensive leaching and/or slow peanut emergencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Metolachlor was slightly more mobile than alachlor in soil chromatography trials, which may be a factor in its slightly greater propensity to be injurious under certain conditions of extensive leaching and/or slow peanut emergence.”
t0“Peanuts”
The same questions in other papers
alachlor · yield · Arachis hypogaea (peanut)Results differ
2 papers in the same direction as this paper · 9 in the opposite direction
- positive
- positive
- positive
8 papers more in this group
See all 12 papers →metolachlor · yield · Arachis hypogaea (peanut)Results differ
3 papers in the same direction as this paper · 13 in the opposite direction
- positive
- positive
- positive
13 papers more in this group
See all 17 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.