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Compatibility of fluazaindolizine and oxamyl with Pasteuria penetrans on spore attachment to juveniles of Meloidogyne javanica and M. incognita

Open Access
|Jul 2020

Figures & Tables

Average number of spores per juvenile of Meloidogyne incognita and M_ javanica exposed to spores of Pasteuria penetrans (Pp) which had been previously incubated for 1, 7, and 21 days in the nematicides fluazaindolizine and oxamyl_

Pp 3 Pp blend
Incubation period
Treatments1 day7 days21 days1 day7 days21 days
Experiment 4
 M. incognita
  Control (Pp untreated)1.26 c1.64 b3.46 b0.78 c2.86 a0.32 b
  Fluazaindolizine 50ppm2.84 b1.50 b3.36 b0.98 bc2.42 a1.06 a
  Fluazaindolizine 250ppm4.28 a2.48 a4.08 b1.28 ab2.20 a1.08 a
  Oxamyl 50ppm4.68 a2.76 a5.02 a1.33 a2.38 a0.94 a
  Spores/dish (× 103)202020101520
  J2/dish3205505501,0001701,150
  Incubation period24 h24 h24 h48 h48 h48 h
Experiment 5
 M. javanica
  Control (Pp untreated) 4.54 b
  Fluazaindolizine 50ppm 5.28 b
  Fluazaindolizine 250ppm 4.66 b
  Oxamyl 50ppm 7.70 a
  Spores/dish (× 103) 15
  J2/dish 550
  Incubation period 24 h
Experiment 6
 M. javanica
  Control (Pp untreated)2.58 c4.16 b3.56 c3.88 b3.58 c2.34 c
  Fluazaindolizine 50ppm3.60 b3.96 b4.38 b4.02 b4.82 b2.96 b
  Fluazaindolizine 250ppm4.02 ab3.78 b4.74 b4.10 b5.16 ab3.00 b
  Oxamyl 50ppm4.30 a4.80 a5.42 a5.90 a5.86 a4.46 a
  Spores/dish (× 103)2020201068
  J2/dish1,0001,000700350300400
  Incubation period48 h48 h48 h48 h48 h48 h

Average number of spores per juvenile of Meloidogyne javanica (M_j_) and M_ incognita (M_i_) exposed to spores of Pasteuria penetrans (Pp blend) which had been previously incubated for 1, 7, and 21 days in the nematicides fluazaindolizine and oxamyl_

Experiment 1Experiment 2Experiment 3
Treatments M.j. M.i. M.j. M.i. M.j.
Control (Pp untreated)3.88 bc6.22 cd3.42 e1.86 cd15.50 ab
Fluazaindolizine 5 ppm
1 day3.46 c8.72 ab6.04 cde1.14 cd14.60 abc
7 days5.20 abc8.72 ab7.56 bcd1.86 cd17.92 a
21 days4.26 bc7.52 bcd12.70 a1.90 cd15.92 ab
Fluazaindolizine 50 ppm
1 day7.06 a10.04 a3.68 e1.02 d17.96 a
7 days4.90 bc7.72 bcd6.58 bcde1.68 cd11.70 c
21 days5.74 ab7.88 bcd9.76 abc3.64 b16.22 ab
Fluazaindolizine 250 ppm
1 day 15.32 abc
7 days 14.66 abc
21 days 13.64 bc
Oxamyl 25 ppm
1 day4.94 bc6.16 d3.72 e1.40 cd
7 days4.18 bc6.40 cd4.78 de2.32 c
21 days5.42 abc8.04 bc10.04 ab6.14 a
Spores/dish (× 103)2020202015
J2/dish180180300550100
Incubation period24 h24 h48 h48 h24 h

Number of egg masses per gram of root of tomato plants infected with juveniles of Meloidogyne incognita and M_ javanica pre-exposed to spores of Pasteuria penetrans (Pp 3)_

Pp 3
Incubation period
Treatments7 days21 days
Experiment 4
 M. incognita
  Control without Pp 55.50 a49.60 a
  Pp untreated10.50 b42.60 ab
  Fluazaindolizine 50 ppm19.90 b19.10 c
  Fluazaindolizine 250 ppm3.50 b31.40 abc
  Oxamyl 50 ppm20.70 b24.90 bc
Experiment 6
 M. javanica
  Control without Pp 103.43 a86.89 a
  Pp untreated62.70 ab72.55 ab
  Fluazaindolizine 50 ppm59.40 ab57.31 bc
  Fluazaindolizine 250 ppm47.29 b48.23 c
  Oxamyl 50 ppm79.56 ab59.65 bc
DOI: https://doi.org/10.21307/jofnem-2020-070 | Journal eISSN: 2640-396X | Journal ISSN: 0022-300X
Language: English
Page range: 1 - 7
Published on: Jul 21, 2020
Published by: Society of Nematologists, Inc.
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year

© 2020 Eleni Nasiou, Tim Thoden, Iro V. Pardavella, Emmanuel A. Tzortzakakis, published by Society of Nematologists, Inc.
This work is licensed under the Creative Commons Attribution 4.0 License.