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Meloidogyne incognita management by nematicides in tomato production

Journal of Nematology
Volume 53 (2021): Issue 1 (January 2021)
By:
Open Access
|Jul 2021

Figures & Tables

Figure 1:

Nematicide effects on root galling at harvest (A) and tomato yields (B-E) in 2018 trial. Within each subfigure, means with different letters are significantly different (P  <  0.05) based on Fisher’s protected LSD. “1,3-D + Fluop.” indicates preplant 1,3-D followed by fluopyram (237 g a.i./ha) at 3 weeks after planting. “Fluop. single” indicates a single fluopyram chemigation (237 g a.i./ha) at transplanting. “Fluop. split” indicates split fluopyram chemigation with 118.5 g a.i./ha each applied at transplanting and 3 weeks after transplanting.
Nematicide effects on root galling at harvest (A) and tomato yields (B-E) in 2018 trial. Within each subfigure, means with different letters are significantly different (P  <  0.05) based on Fisher’s protected LSD. “1,3-D + Fluop.” indicates preplant 1,3-D followed by fluopyram (237 g a.i./ha) at 3 weeks after planting. “Fluop. single” indicates a single fluopyram chemigation (237 g a.i./ha) at transplanting. “Fluop. split” indicates split fluopyram chemigation with 118.5 g a.i./ha each applied at transplanting and 3 weeks after transplanting.

Figure 2:

Nematicide effects on Meloidogyne incognita J2 soil abundances and root galling at harvest in 2019 and 2020 trials. Within each subfigure, means with different letters are significantly different (P < 0.05) based on Fisher’s protected LSD.
Nematicide effects on Meloidogyne incognita J2 soil abundances and root galling at harvest in 2019 and 2020 trials. Within each subfigure, means with different letters are significantly different (P < 0.05) based on Fisher’s protected LSD.

Figure 3:

Nematicide effects on free-living nematode soil abundances in 2019 and 2020 trials. Within each subfigure, means with different letters are significantly different (P  <  0.05) based on Fisher’s protected LSD.
Nematicide effects on free-living nematode soil abundances in 2019 and 2020 trials. Within each subfigure, means with different letters are significantly different (P  <  0.05) based on Fisher’s protected LSD.

Figure 4:

Nematicide effects on marketable yield, crop value, and net income in 2019 and 2020 trials. USD is United States dollars. Net income is crop value minus nematicide product cost, not including any labor or equipment costs. Within each subfigure, means with different letters are significantly different (P  <  0.05) based on Fisher’s protected LSD.
Nematicide effects on marketable yield, crop value, and net income in 2019 and 2020 trials. USD is United States dollars. Net income is crop value minus nematicide product cost, not including any labor or equipment costs. Within each subfigure, means with different letters are significantly different (P  <  0.05) based on Fisher’s protected LSD.

Nematicide treatments in 2018–2020 trials_

TreatmentActive ingredientProductTotal product broadcast rate a Total a.i. broadcast rateTiming/method

  • 2018

  • 1

  • Untreated control

  • 2

  • 1,3-dichloropropene (1,3-D)

  • Telone II

  • 140 liters/ha

  • 166 kg/ha

  • Preplant shank fumigation

  • 3

  • 1,3-D

  • Telone II

  • 140 liters/ha

  • 166 kg/ha

  • Preplant shank fumigation

  • Fluopyram

  • Velum Prime

  • 474 mL/ha

  • 237 g/ha

  • Single chemigation 21 DAP

  • 4

  • Fluopyram

  • Velum Prime

  • 474 mL/ha

  • 237 g/ha

  • Single chemigation at planting

  • 5

  • Fluopyram

  • Velum Prime

  • 474 mL/ha

  • 237 g/ha

  • Chemigation (1) at planting and (2) 21 DAP

  • 2019 and 2020

  • 1

  • Untreated control

  • 2

  • 1,3-D

  • Telone II

  • 140 liters/ha

  • 166 kg/ha

  • Preplant shank fumigation

  • 3

  • 1,3-D

  • Telone II

  • 140 liters/ha

  • 166 kg/ha

  • Preplant shank fumigation

  • Fluopyram

  • Velum Prime

  • 474 mL/ha

  • 237 g/ha

  • Single chemigation at planting

  • 4

  • Fluopyram

  • Velum Prime

  • 474 mL/ha

  • 237 g/ha

  • Single chemigation at planting

  • 5

  • Oxamyl

  • Vydate L

  • 3.10 liters/ha

  • 750 g/ha

  • Chemigation (1) at planting and (2) 10-12 DAP

Schedule for data collection_ Numbers in parentheses are days before transplanting (DBP) or days after transplanting (DAP)_

Item201820192020
Preplant soil samples

  • 30 July (23 DBP)

  • 30 July (44 DBP)

  • 27 July (43 DBP)

  • Preplant M. incognita J2/100 cm3 soil

  • 30

  • 45

  • 14

  • Soil fumigation

  • 1 August (22 DBP)

  • 30 July (44 DBP)

  • 27 July (43 DBP)

  • Date planted

  • 23 August

  • 5 September

  • 8 September

  • Tomato variety

  • Grand Marshall

  • BHN 602

  • BHN 602

  • Postplant fluopyam injection

  • 13 September (21 DAP)

  • 17 September (12 DAP)

  • 18 September (10 DAP)

  • Harvest date(s)

  • 9 November (78 DAP)

  • 4 December (90 DAP)

  • 2 December (87 DAP)

  • 20 November (89 DAP)

  • 29 November (98 DAP)

  • Soil sampling/root rating

  • 29 November (98 DAP)

  • 4 December (90 DAP)

  • 3 December (88 DAP)

Tomato yield (Mg/ha) in different size categories as affected by nematicide treatments in 2019 and 2020_

TreatmentCull a Small b MediumLargeTotal

  • 2019

  • Untreated control

  • 4.3

  • 4.2a

  • 2.2

  • 0.7

  • 11.4b

  • 1,3-D

  • 6.6

  • 7.0b

  • 4.2

  • 1.4

  • 19.2a

  • 1,3-D+Fluopyram

  • 5.4

  • 5.2ab

  • 2.9

  • 1.0

  • 14.4ab

  • Fluopyram

  • 4.6

  • 3.7b

  • 1.6

  • 0.6

  • 10.5b

  • Oxamyl

  • 6.1

  • 5.4ab

  • 2.4

  • 0.8

  • 14.8ab

  • 2020

  • Untreated control

  • 11.6

  • 15.1

  • 12.2

  • 6.1

  • 45.0

  • 1,3-D

  • 12.3

  • 15.0

  • 12.9

  • 8.2

  • 48.4

  • 1,3-D+Fluopyram

  • 12.3

  • 16.5

  • 12.5

  • 7.0

  • 48.3

  • Fluopyram

  • 12.7

  • 16.1

  • 11.5

  • 5.9

  • 46.2

  • Oxamyl

  • 12.7

  • 15.8

  • 12.4

  • 7.1

  • 47.9

DOI: https://doi.org/10.21307/jofnem-2021-055 | Journal eISSN: 2640-396X | Journal ISSN: 0022-300X
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Language: English
Page range: 1 - 12
Published on: Jul 19, 2021
Published by: Society of Nematologists, Inc.
In partnership with: Paradigm Publishing Services
Publication frequency: 1 times per year
Keywords:
1,3-dichloropropene,
Fluopyram,
Management,
Nematicide,
Fumigation,
Nematode community,
Oxamyl,
Southern root-knot nematode,
Tomato
Related subjects:
Life sciences,
Life sciences, other

© 2021 Zane J. Grabau, Chang Liu, Rebeca Sandoval-Ruiz, published by Society of Nematologists, Inc.
This work is licensed under the Creative Commons Attribution 4.0 License.

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