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Fluopyram or Resistant Cultivars Manage Meloidogyne arenaria Infestation in Virginia-Type Peanut Production

Zane J. Grabau

Zane J. Grabau

Entomology and Nematology Department, Institute of Food and Agricultural Sciences, University of Florida InstituteGainesville, United States
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Grabau, Zane J.
, 
Sabina Budhathoki

Sabina Budhathoki

Entomology and Nematology Department, Institute of Food and Agricultural Sciences, University of Florida InstituteGainesville, United States
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Budhathoki, Sabina
, 
Rebeca Sandoval Ruiz

Rebeca Sandoval Ruiz

  • Entomology and Nematology Department, Institute of Food and Agricultural Sciences, University of Florida InstituteGainesville, United States
  • Laboratory of Nematology, Crop Protection Research Center, Agronomy School, University of Costa RicaSan José, Costa Rica
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Ruiz, Rebeca Sandoval
 and 
Chang Liu

Chang Liu

  • Entomology and Nematology Department, Institute of Food and Agricultural Sciences, University of Florida InstituteGainesville, United States
  • Department of Biochemistry, Molecular Biology, Entomology, & Plant Pathology, Mississippi State University
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Liu, Chang
  
Apr 22, 2025
Fluopyram or Resistant Cultivars Manage Meloidogyne arenaria Infestation in Virginia-Type Peanut Production's Cover Image
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Article Category: Research Paper
Published Online: Apr 22, 2025
Received: Aug 02, 2024
DOI: https://doi.org/10.2478/jofnem-2025-0010
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© 2025 Zane J. Grabau et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Figure 1:

Peanut root-knot nematode egg abundances from peanut roots at midseason (6 weeks after planting) in 2022 and 2023 as affected by cultivars and nematicide treatment. “B-II Fluop.” indicates Bailey II cultivar with infurrow fluopyram application. Other treatment names indicate cultivars without nematicide application. Within each subfigure, means with different letters are significantly different (Fisher’s protected LSD, α = 0.05).
Peanut root-knot nematode egg abundances from peanut roots at midseason (6 weeks after planting) in 2022 and 2023 as affected by cultivars and nematicide treatment. “B-II Fluop.” indicates Bailey II cultivar with infurrow fluopyram application. Other treatment names indicate cultivars without nematicide application. Within each subfigure, means with different letters are significantly different (Fisher’s protected LSD, α = 0.05).

Figure 2:

Peanut root-knot nematode soil abundances before planting, at midseason (6 weeks after planting), and at harvest in 2022 and 2023 as affected by cultivars and nematicide treatment. “B-II Fluop.” indicates Bailey II cultivar with in-furrow fluopyram application. Other treatment names indicate cultivars without nematicide application. Within each subfigure, means with different letters are significantly different (Fisher’s protected LSD, α = 0.05).
Peanut root-knot nematode soil abundances before planting, at midseason (6 weeks after planting), and at harvest in 2022 and 2023 as affected by cultivars and nematicide treatment. “B-II Fluop.” indicates Bailey II cultivar with in-furrow fluopyram application. Other treatment names indicate cultivars without nematicide application. Within each subfigure, means with different letters are significantly different (Fisher’s protected LSD, α = 0.05).

Figure 3:

Ring nematode soil abundances before planting, at midseason (6 weeks after planting), and at harvest in 2022 and 2023 as affected by cultivars and nematicide treatment. “B-II Fluop.” indicates Bailey II cultivar with in-furrow fluopyram application. Other treatment names indicate cultivars without nematicide application. Within each subfigure, means with different letters are significantly different (Fisher’s protected LSD, α = 0.05).
Ring nematode soil abundances before planting, at midseason (6 weeks after planting), and at harvest in 2022 and 2023 as affected by cultivars and nematicide treatment. “B-II Fluop.” indicates Bailey II cultivar with in-furrow fluopyram application. Other treatment names indicate cultivars without nematicide application. Within each subfigure, means with different letters are significantly different (Fisher’s protected LSD, α = 0.05).

Figure 4:

Peanut yield and marginal return on investment in 2022 and 2023 as affected by cultivars and nematicide treatment. “B-II Fluop.” indicates Bailey II cultivar with in-furrow fluopyram application. Other treatment names indicate cultivars without nematicide application. Marginal return (in US Dollars) is relative to mean income (crop value minus product cost only) for Bailey II. Within each subfigure, means with different letters differ significantly (Fisher’s protected LSD, α = 0.05).
Peanut yield and marginal return on investment in 2022 and 2023 as affected by cultivars and nematicide treatment. “B-II Fluop.” indicates Bailey II cultivar with in-furrow fluopyram application. Other treatment names indicate cultivars without nematicide application. Marginal return (in US Dollars) is relative to mean income (crop value minus product cost only) for Bailey II. Within each subfigure, means with different letters differ significantly (Fisher’s protected LSD, α = 0.05).

Figure 5:

Total free-living nematode soil abundances before planting, at midseason (6 weeks after planting), and at harvest in 2022 and 2023 as affected by cultivars and nematicide treatment. “B-II Fluop.” indicates Bailey II cultivar with in-furrow fluopyram application. Other treatment names indicate cultivars without nematicide application. Within each subfigure, means with different letters differ significantly (Fisher’s protected LSD, α = 0.05).
Total free-living nematode soil abundances before planting, at midseason (6 weeks after planting), and at harvest in 2022 and 2023 as affected by cultivars and nematicide treatment. “B-II Fluop.” indicates Bailey II cultivar with in-furrow fluopyram application. Other treatment names indicate cultivars without nematicide application. Within each subfigure, means with different letters differ significantly (Fisher’s protected LSD, α = 0.05).

Cultivar and nematicide effects on agronomic measurements in 2022 and 2023 trials_ Numbers in parentheses are days after planting_

Treatment ----------------------------------------2022---------------------------------------
Stand (12) Root weight (42)b Shoot weight (42)b Vigor (42) Vigor (68) Vigor (95) Stem rot (143)c Leafspot (143)d
Bailey II 3.0 a 4.6 42 a 87 a 89 a 85 a 1 5.8 a
Bailey II + Fluopyram 2.8 ab 3.6 34 a 88 ab 95 a 85 a 1 6.3 a
TifJumbo 2.5 b 3.9 33 ab 67 c 63 b 74 b 1 4.7 b
Georgia-19HP 2.5 b 3.5 21 b 77 bc 50 b 59 c 2 3.5 c

Schedule for data collection and trial establishment_ Numbers in parentheses are days after planting_

Event 2022 2023
Preplant soil sampling 28 April (0) 8 May (0)
Planting 28 April (0) 8 May (0)
Stand count 1 10 May (12) 22 May (14)
Vigor rating 1 9 June (42) 19 June (42)
Vigor rating 2 5 July (68) 21 July (74)a
Vigor rating 3 2 Aug (95) 28 Aug (112)b
Midseason soil sampling 9 June (42) 22 June (42)
Midseason root sampling 9 June (42) 22 June (45)
Harvest soil sampling 6 Sep (129) 6 Sep (121)
Leafspot and stem rot rating 20 Sep (143) 19 Sep (134)
Peanut inverting 20 Sep (143) 19 Sep (134)
Peanut combining 22 Sep (145) 25 Sep (137)
Language:
English
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Journal Subjects:
Life Sciences, Life Sciences, other
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