Abstract
Fungicide penetration of the peanut (Arachis hypogaea) canopy to target soilborne pathogens is difficult due to the dense foliage present when mid- to late-season applications are made. To assess the effect of application timing and volume on leaf spot and stem rot control as well as peanut yield, pyraclostrobin (0.21 kg a.i./ha) or chlorothalonil (1.26 kg a.i./ha), a systemic and a contact fungicide, respectively, were applied four times on cv. Georgia Green during the day (on unfolded leaves) or at night (on folded leaves) at 187, 243, or 355 liters/ha. Night application of pyraclostrobin, across spray volumes, gave the best stem rot control and pod yield increase. Pyraclostrobin applied during the day at higher spray volumes also slightly increased control of stem rot, apparently by improving canopy penetration. Neither application timing nor spray volume affected leaf spot control with pyraclostrobin. Higher spray volumes for the chlorothalonil applications tended to improve control of early and late leaf spot, possibly by increasing coverage of foliage and stems. Accepted for publication 10 January 2012. Published 20 April 2012.
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Claims 6
Claim · model-written summary
Night application of pyraclostrobin gave the best stem rot control across spray volumes.
- Taxon
- Peanut
Arachis hypogaeat0 - Treatment
- Night application of pyraclostrobine0
- Outcome
- stem rot controle0
- Direction
- beste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Night application of pyraclostrobin, across spray volumes, gave the best stem rot control and pod yield increase”
t0“Peanut”
Claim · model-written summary
Night application of pyraclostrobin increased peanut pod yield across spray volumes.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- Night application of pyraclostrobine0
- Outcome
- pod yielde0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Night application of pyraclostrobin, across spray volumes, gave the best stem rot control and pod yield increase”
t0“Peanut”
Claim · model-written summary
Higher daytime pyraclostrobin spray volumes slightly improved stem rot control.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- Pyraclostrobin applied during the day at higher spray volumese0
- Outcome
- control of stem rote0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pyraclostrobin applied during the day at higher spray volumes also slightly increased control of stem rot”
t0“Peanut”
Claim · model-written summary
Application timing did not affect leaf spot control with pyraclostrobin.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- application timinge0
- Outcome
- leaf spot controle0
- Direction
- Neithere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither application timing nor spray volume affected leaf spot control with pyraclostrobin”
t0“Peanut”
Claim · model-written summary
Spray volume did not affect leaf spot control with pyraclostrobin.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- spray volumee0
- Outcome
- leaf spot controle0
- Direction
- Neithere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither application timing nor spray volume affected leaf spot control with pyraclostrobin”
t0“Peanut”
Claim · model-written summary
Higher chlorothalonil spray volumes tended to improve early and late leaf spot control.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- Higher spray volumes for the chlorothalonil applicationse0
- Outcome
- control of early and late leaf spote0
- Direction
- improvee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher spray volumes for the chlorothalonil applications tended to improve control of early and late leaf spot”
t0“Peanut”
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