Abstract
Abstract Growth and yield responses of peanuts (Arachis hypogaca L.) to preplant incorporated applications of metolachlor (2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamide] herbicide were studied at two locations in Georgia. At Sycamore, GK-7 peanuts which received 3.8 cm irrigation immediately following herbicide incorporation and planting were generally stunted and yielded less than non-irrigated peanuts. Metolachlor rates from 2.2 to 6.7 kg ai/ha reduced early and late season growth of irrigated peanuts in 1985 and 1986 but non-irrigated peanuts recovered by mid-August. Yields were suppressed only at the highest rate of metolachor in 1985, but there was no yield response in 1986 or 1987. At Tifton, emergence of Florunner peanuts was delayed and canopy height and width were reduced by metolachlor. Initial flower, peg and pod production were reduced in a linear response to metolachlor rate, resulting in differences in pod development 95 days after planting. There was a rate response for pod yield in 1985 but not in 1986 and grade did not differ either year. In general, emergence and growth were delayed and reduced by preplant incorporated metolachlor when rainfall or irrigation followed application, but yields were not reduced at labeled rates.
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Claims 10
Claim · model-written summary
Metolachlor rates from 2.2 to 6.7 kg ai/ha reduced early and late season growth of irrigated peanuts in 1985 and 1986.
- Taxon
- peanuts
Arachis hypogaeae0 - Treatment
- Metolachlor rates from 2.2 to 6.7 kg ai/hae1
- Outcome
- early and late season growthe1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth and yield responses of peanuts (Arachis hypogaca L.) to preplant incorporated applications of metolachlor”
e1“Metolachlor rates from 2.2 to 6.7 kg ai/ha reduced early and late season growth of irrigated peanuts in 1985 and 1986”
Claim · model-written summary
Yields of peanuts were suppressed only at the highest metolachlor rate in 1985.
- Taxon
- peanutsArachis hypogaeae0
- Treatment
- highest rate of metolachore2
- Outcome
- Yieldse2
- Direction
- suppressede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth and yield responses of peanuts (Arachis hypogaca L.) to preplant incorporated applications of metolachlor”
e2“Yields were suppressed only at the highest rate of metolachor in 1985”
Claim · model-written summary
Metolachlor produced no yield response in 1986 or 1987.
- Taxon
- peanutsArachis hypogaeae0
- Treatment
- metolachlore0
- Outcome
- yield responsee3
- Direction
- no_changeinferrede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth and yield responses of peanuts (Arachis hypogaca L.) to preplant incorporated applications of metolachlor”
e3“but there was no yield response in 1986 or 1987”
Claim · model-written summary
At Tifton, emergence of Florunner peanuts was delayed by metolachlor.
- Taxon
- peanutsArachis hypogaeae4
- Material
- Florunnere4
- Treatment
- metolachlore4
- Outcome
- emergencee4
- Direction
- delayede4
- Setting
- Tiftone4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“At Tifton, emergence of Florunner peanuts was delayed and canopy height and width were reduced by metolachlor”
Claim · model-written summary
At Tifton, metolachlor reduced canopy height and width of Florunner peanuts.
- Taxon
- peanutsArachis hypogaeae4
- Treatment
- metolachlore4
- Outcome
- canopy height and widthe4
- Direction
- reducede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“At Tifton, emergence of Florunner peanuts was delayed and canopy height and width were reduced by metolachlor”
Claim · model-written summary
Initial flower, peg and pod production of peanuts were reduced in a linear response to metolachlor rate.
- Taxon
- peanutsArachis hypogaeae0
- Treatment
- metolachlor ratee5
- Outcome
- Initial flower, peg and pod productione5
- Direction
- reducede5
- Qualifier
- in a linear responsee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth and yield responses of peanuts (Arachis hypogaca L.) to preplant incorporated applications of metolachlor”
e5“Initial flower, peg and pod production were reduced in a linear response to metolachlor rate”
Claim · model-written summary
Pod yield showed a metolachlor rate response in 1985 but not in 1986.
- Taxon
- peanutsArachis hypogaeae0
- Treatment
- metolachlore0
- Outcome
- pod yielde6
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth and yield responses of peanuts (Arachis hypogaca L.) to preplant incorporated applications of metolachlor”
e6“There was a rate response for pod yield in 1985 but not in 1986”
Claim · model-written summary
Metolachlor rate did not change peanut pod grade in either year.
- Taxon
- peanutsArachis hypogaeae0
- Treatment
- metolachlore0
- Outcome
- gradee7
- Direction
- no_changeinferrede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth and yield responses of peanuts (Arachis hypogaca L.) to preplant incorporated applications of metolachlor”
e7“grade did not differ either year”
Claim · model-written summary
Preplant-incorporated metolachlor delayed and reduced emergence and growth of peanuts when rainfall or irrigation followed application.
- Taxon
- peanutsArachis hypogaeae0
- Treatment
- preplant incorporated metolachlore1
- Outcome
- emergence and growthe1
- Direction
- delayed and reducede1
- Qualifier
- when rainfall or irrigation followed applicatione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth and yield responses of peanuts (Arachis hypogaca L.) to preplant incorporated applications of metolachlor”
e1“emergence and growth were delayed and reduced by preplant incorporated metolachlor when rainfall or irrigation followed application”
Claim · model-written summary
At labeled rates, metolachlor did not reduce peanut yields.
- Taxon
- peanutsArachis hypogaeae0
- Treatment
- labeled ratese1
- Outcome
- yieldse1
- Direction
- not reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth and yield responses of peanuts (Arachis hypogaca L.) to preplant incorporated applications of metolachlor”
e1“but yields were not reduced at labeled rates”
The same questions in other 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 →metolachlor · growth · Arachis hypogaea (peanut)Results agree
1 paper in the same direction as this paper
- negative
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.