Paper · 2004 · Peanut Science

Comparison of Fungicide Programs for the Control of Early Leaf Spot and Southern Stem Rot on Selected Peanut Cultivars1

A. K. Hagan; M. E. Rivas-Davila; K. L. Bowen; et al.

20
claims
38
verbatim quotes
28
citations
3
research areas
✓
Open access

Abstract

Abstract Azoxystrobin, tebuconazole, pyraclostrobin, chlorothalonil + flutolanil, and chlorothalonil fungicide programs were evaluated on selected peanut cultivars for the control of early leaf spot (ELS) and southern stem rot (SSR) in 2000, 2001, and 2002. A peanut-cotton-peanut rotation was followed and the plots were irrigated as needed. Virugard and Georgia Green were planted in all 3 yr. The late-maturing line Southern Runner was planted only in 2000 and was replaced with Florida C-99R in 2001 and 2002. Since the ranking of fungicide programs for ELS and SSR control and yield response was similar over peanut cultivars, data for each variable in 2000, 2001, and 2002 were pooled. The 0.34-kg ai/ha azoxystrobin and pyraclostrobin programs gave better ELS control than the season-long chlorothalonil standard in 1 yr. However, SSR control and yield response to pyraclostrobin was similar to the chlorothalonil standard. Significant reductions in SSR damage and higher yields were obtained with 0.34-kg ai/ha azoxystrobin program in all 3 yr. When compared to the chlorothalonil standard, the 0.47-kg ai/ha azoxystrobin program gave superior SSR control in 2000 and 2001, but significantly better ELS control and higher yield were obtained only in 2001. Tebuconazole-treated peanuts had similar ELS ratings to those recorded for the chlorothalonil standard and azoxystrobin programs in 2000 and 2001, but the ELS ratings for the former program were significantly higher in 2002. While tebuconazole reduced SSR damage compared with chlorothalonil alone, the azoxystrobin and chlorothalonil + flutolanil programs controlled SSR significantly better than tebuconazole in at least 1 yr. Also, the 0.34-kg ai/ha azoxystrobin program significantly increased yield above that of the chlorothalonil standard more consistently than did tebuconazole. Relatively few differences in disease control or yield response were noted between the two chlorothalonil + flutolanil programs, but both increased yield above that of the chlorothalonil standard. By maturing about 2 wk before Georgia Green, Virugard may have escaped some ELS and SSR damage, which may have contributed to its higher yield. There are indications that the late-maturing Florida C-99R has partial resistance to ELS but not SSR. Georgia Green proved more susceptible to both diseases than Virugard or Florida C-99R but no peanut cultivar produced consistently higher yields.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 20

Observationobservedoriginal resultmeasured

Claim · model-written summary

Fungicide program rankings were similar across peanut cultivars.

Outcome
ranking of fungicide programs for ELS and SSR control and yield responsee0
Direction
similare0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“ranking of fungicide programs for ELS and SSR control and yield response was similar over peanut cultivars”

✓ located verbatim in the source · abstract, characters 524–630 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The 0.34-kg ai/ha azoxystrobin program gave better ELS control than chlorothalonil in one year.

Treatment
0.34-kg ai/ha azoxystrobine0
Outcome
ELS controle0
Direction
bettere0
Qualifier
in 1 yre0
Comparator
season-long chlorothalonil standarde0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“The 0.34-kg ai/ha azoxystrobin and pyraclostrobin programs gave better ELS control than the season-long chlorothalonil standard in 1 yr”

✓ located verbatim in the source · abstract, characters 692–827 · show in text ↑
t0

“Peanut Cultivars”

✓ located verbatim in the source · title, characters 102–118 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The pyraclostrobin program gave better ELS control than chlorothalonil in one year.

Treatment
pyraclostrobine0
Outcome
ELS controle0
Direction
bettere0
Comparator
season-long chlorothalonil standarde0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“The 0.34-kg ai/ha azoxystrobin and pyraclostrobin programs gave better ELS control than the season-long chlorothalonil standard in 1 yr”

✓ located verbatim in the source · abstract, characters 692–827 · show in text ↑
t0

“Peanut Cultivars”

✓ located verbatim in the source · title, characters 102–118 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Pyraclostrobin gave SSR control similar to chlorothalonil.

Treatment
pyraclostrobine0
Outcome
SSR controle0
Direction
similare0
Comparator
chlorothalonil standarde0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“SSR control and yield response to pyraclostrobin was similar to the chlorothalonil standard”

✓ located verbatim in the source · abstract, characters 838–929 · show in text ↑
t0

“Peanut Cultivars”

✓ located verbatim in the source · title, characters 102–118 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Pyraclostrobin gave yield response similar to chlorothalonil.

Treatment
pyraclostrobine0
Outcome
yield responsee0
Direction
similare0
Comparator
chlorothalonil standarde0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“SSR control and yield response to pyraclostrobin was similar to the chlorothalonil standard”

✓ located verbatim in the source · abstract, characters 838–929 · show in text ↑
t0

“Peanut Cultivars”

✓ located verbatim in the source · title, characters 102–118 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

The 0.34-kg ai/ha azoxystrobin program significantly reduced SSR damage in all three years.

Treatment
0.34-kg ai/ha azoxystrobin programe0
Outcome
SSR damagee0
Direction
reductionse0
Qualifier
all 3 yre0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“Significant reductions in SSR damage and higher yields were obtained with 0.34-kg ai/ha azoxystrobin program in all 3 yr”

✓ located verbatim in the source · abstract, characters 931–1051 · show in text ↑
t0

“Peanut Cultivars”

✓ located verbatim in the source · title, characters 102–118 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The 0.34-kg ai/ha azoxystrobin program raised yield in all three years.

Treatment
0.34-kg ai/ha azoxystrobin programe0
Outcome
yieldse0
Direction
highere0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“Significant reductions in SSR damage and higher yields were obtained with 0.34-kg ai/ha azoxystrobin program in all 3 yr”

✓ located verbatim in the source · abstract, characters 931–1051 · show in text ↑
t0

“Peanut Cultivars”

✓ located verbatim in the source · title, characters 102–118 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The 0.47-kg ai/ha azoxystrobin program gave superior SSR control in 2000 and 2001.

Treatment
0.47-kg ai/ha azoxystrobin programe0
Outcome
SSR controle0
Direction
superiore0
Qualifier
in 2000 and 2001e0
Comparator
chlorothalonil standarde0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“When compared to the chlorothalonil standard, the 0.47-kg ai/ha azoxystrobin program gave superior SSR control in 2000 and 2001”

✓ located verbatim in the source · abstract, characters 1053–1180 · show in text ↑
t0

“Peanut Cultivars”

✓ located verbatim in the source · title, characters 102–118 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

The 0.47-kg ai/ha azoxystrobin program significantly improved ELS control only in 2001.

Treatment
0.47-kg ai/ha azoxystrobin programe0
Outcome
ELS controle0
Direction
bettere0
Qualifier
only in 2001e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“0.47-kg ai/ha azoxystrobin program gave superior SSR control in 2000 and 2001, but significantly better ELS control and higher yield were obtained only in 2001”

✓ located verbatim in the source · abstract, characters 1103–1262 · show in text ↑
t0

“Peanut Cultivars”

✓ located verbatim in the source · title, characters 102–118 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The 0.47-kg ai/ha azoxystrobin program raised yield only in 2001.

Treatment
0.47-kg ai/ha azoxystrobin programe0
Outcome
yielde0
Direction
highere0
Qualifier
only in 2001e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“0.47-kg ai/ha azoxystrobin program gave superior SSR control in 2000 and 2001, but significantly better ELS control and higher yield were obtained only in 2001”

✓ located verbatim in the source · abstract, characters 1103–1262 · show in text ↑
t0

“Peanut Cultivars”

✓ located verbatim in the source · title, characters 102–118 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Tebuconazole ELS ratings were similar to chlorothalonil and azoxystrobin in 2000 and 2001.

Taxon
peanutsArachis hypogaeae0
Treatment
Tebuconazolee0
Outcome
ELS ratingse0
Direction
similare0
Comparator
chlorothalonil standard and azoxystrobin programse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“Tebuconazole-treated peanuts had similar ELS ratings to those recorded for the chlorothalonil standard and azoxystrobin programs in 2000 and 2001”

✓ located verbatim in the source · abstract, characters 1264–1409 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Tebuconazole ELS ratings were significantly higher in 2002.

Taxon
peanutsArachis hypogaeae1
Treatment
Tebuconazolee1
Outcome
ELS ratingse0
Direction
highere0
Qualifier
in 2002e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“ELS ratings for the former program were significantly higher in 2002”

✓ located verbatim in the source · abstract, characters 1419–1487 · show in text ↑
e1

“Tebuconazole-treated peanuts had similar ELS ratings to those recorded for the chlorothalonil standard and azoxystrobin programs in 2000 and 2001”

✓ located verbatim in the source · abstract, characters 1264–1409 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Tebuconazole reduced SSR damage compared with chlorothalonil.

Treatment
tebuconazolee0
Outcome
SSR damagee0
Direction
reducede0
Comparator
chlorothalonil alonee0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“tebuconazole reduced SSR damage compared with chlorothalonil alone”

✓ located verbatim in the source · abstract, characters 1495–1561 · show in text ↑
t0

“Peanut Cultivars”

✓ located verbatim in the source · title, characters 102–118 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Azoxystrobin controlled SSR significantly better than tebuconazole in at least one year.

Treatment
azoxystrobine0
Outcome
SSRe0
Direction
bettere0
Comparator
tebuconazolee0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“azoxystrobin and chlorothalonil + flutolanil programs controlled SSR significantly better than tebuconazole in at least 1 yr”

✓ located verbatim in the source · abstract, characters 1567–1691 · show in text ↑
t0

“Peanut Cultivars”

✓ located verbatim in the source · title, characters 102–118 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Chlorothalonil plus flutolanil controlled SSR significantly better than tebuconazole in at least one year.

Treatment
chlorothalonil + flutolanile0
Outcome
SSRe0
Direction
bettere0
Comparator
tebuconazolee0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“azoxystrobin and chlorothalonil + flutolanil programs controlled SSR significantly better than tebuconazole in at least 1 yr”

✓ located verbatim in the source · abstract, characters 1567–1691 · show in text ↑
t0

“Peanut Cultivars”

✓ located verbatim in the source · title, characters 102–118 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Azoxystrobin increased yield above chlorothalonil more consistently than tebuconazole.

Treatment
0.34-kg ai/ha azoxystrobin programe0
Outcome
yielde0
Direction
increasede0
Qualifier
more consistently than did tebuconazolee0
Comparator
chlorothalonil standarde0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“0.34-kg ai/ha azoxystrobin program significantly increased yield above that of the chlorothalonil standard more consistently than did tebuconazole”

✓ located verbatim in the source · abstract, characters 1703–1849 · show in text ↑
t0

“Peanut Cultivars”

✓ located verbatim in the source · title, characters 102–118 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Both chlorothalonil plus flutolanil programs raised yield above chlorothalonil.

Treatment
chlorothalonil + flutolanil programse1
Outcome
yielde0
Direction
increasede0
Comparator
chlorothalonil standarde0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“both increased yield above that of the chlorothalonil standard”

✓ located verbatim in the source · abstract, characters 1984–2046 · show in text ↑
e1

“between the two chlorothalonil + flutolanil programs”

✓ located verbatim in the source · abstract, characters 1926–1978 · show in text ↑
t0

“Peanut Cultivars”

✓ located verbatim in the source · title, characters 102–118 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Virugard matured about two weeks before Georgia Green and may have escaped disease damage.

Taxon
Virugarde0
Material
Virugarde0
Outcome
maturinge0
Direction
beforee0
Value
2 wke0
Qualifier
may have escaped some ELS and SSR damagee0
Comparator
Georgia Greene0

Verbatim

e0

“By maturing about 2 wk before Georgia Green, Virugard may have escaped some ELS and SSR damage”

✓ located verbatim in the source · abstract, characters 2048–2142 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Florida C-99R showed indications of partial resistance to ELS but not SSR.

Material
Florida C-99Re0
Outcome
partial resistance to ELS but not SSRe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“late-maturing Florida C-99R has partial resistance to ELS but not SSR”

✓ located verbatim in the source · abstract, characters 2223–2292 · show in text ↑
t0

“Peanut Cultivars”

✓ located verbatim in the source · title, characters 102–118 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Georgia Green was more susceptible to both diseases than Virugard or Florida C-99R.

Material
Georgia Greene0
Outcome
susceptible to both diseasese0
Direction
more susceptiblee0
Comparator
Virugard or Florida C-99Re0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“Georgia Green proved more susceptible to both diseases than Virugard or Florida C-99R”

✓ located verbatim in the source · abstract, characters 2294–2379 · show in text ↑
t0

“Peanut Cultivars”

✓ located verbatim in the source · title, characters 102–118 · show in text ↑

pyraclostrobin · yield · Arachis hypogaea (peanut)Positive and negative results

9 papers: 5 positive, 4 negative or no effect

3 papers in the same direction as this paper · 5 reporting no difference from an alternative

  1. positive
  2. no effect
  3. positive

5 papers more in this group

See all 9 papers →

pyraclostrobin · disease · Arachis hypogaea (peanut)Positive and negative results

9 papers: 8 positive, 1 negative or no effect

7 papers in the same direction as this paper · 1 in the opposite direction

  1. negative
  2. positive
  3. positive

5 papers more in this group

See all 9 papers →

azoxystrobin · disease · Arachis hypogaea (peanut)Positive and negative results

11 papers: 8 positive, 3 negative or no effect

7 papers in the same direction as this paper · 2 in the opposite direction · 1 reporting no difference from an alternative

  1. negative
  2. no effect
  3. positive

7 papers more in this group

See all 11 papers →

azoxystrobin · yield · Arachis hypogaea (peanut)Positive and negative results

11 papers: 10 positive, 1 negative or no effect

9 papers in the same direction as this paper · 1 in the opposite direction

  1. positive
  2. positive
  3. positive

7 papers more in this group

See all 11 papers →

flutolanil · disease · Arachis hypogaea (peanut)Positive and negative results

12 papers: 10 positive, 2 negative or no effect

9 papers in the same direction as this paper · 2 in the opposite direction

  1. negative
  2. no effect
  3. positive

8 papers more in this group

See all 12 papers →

tebuconazole · disease · Arachis hypogaea (peanut)Positive and negative results

21 papers: 20 positive, 1 negative or no effect

19 papers in the same direction as this paper · 1 in the opposite direction

  1. positive
  2. positive
  3. negative

17 papers more in this group

See all 21 papers →

flutolanil · yield · Arachis hypogaea (peanut)Results agree

11 papers: 11 positive, 0 negative or no effect

10 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

7 papers more in this group

See all 11 papers →

chlorothalonil · yield · Arachis hypogaea (peanut)Results agree

13 papers: 13 positive, 0 negative or no effect

12 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

9 papers more in this group

See all 13 papers →

8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.

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.