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Impact of non-fumigant nematicides on reproduction and pathogenicity of Meloidogyne enterolobii and disease severity in tobacco

Journal of Nematology
Volume 55 (2023): Issue 1 (February 2023)
By:
Open Access
|Jun 2023

Figures & Tables

Figure 1:

Reproduction of M. enterolobii expressed as number of eggs per root system of tobacco (A) and as number of J2 per 100 cm3 of soil (B). Data were combined over two experiments and are means of 10 replications. Data were log transformed and the treatment means followed by a common letter are not significantly different according to Tukey's HSD test (P ≤ 0.05). The treatment means in the figure represent untransformed values. Burkholderia refers to Burkholderia rinojensis strain A396 secondary metabolites.
Reproduction of M. enterolobii expressed as number of eggs per root system of tobacco (A) and as number of J2 per 100 cm3 of soil (B). Data were combined over two experiments and are means of 10 replications. Data were log transformed and the treatment means followed by a common letter are not significantly different according to Tukey's HSD test (P ≤ 0.05). The treatment means in the figure represent untransformed values. Burkholderia refers to Burkholderia rinojensis strain A396 secondary metabolites.

Figure 2:

Dry weights of tobacco shoot (A) and root (B) inoculated with M. enterolobii. The plant materials were dried at 45°C for 2 wk. Data were combined over two experiments and are means of 10 replications. Treatment means followed by a common letter are not significantly different according to Tukey's HSD test (P ≤ 0.05). Burkholderia refers to Burkholderia rinojensis strain A396 secondary metabolites.
Dry weights of tobacco shoot (A) and root (B) inoculated with M. enterolobii. The plant materials were dried at 45°C for 2 wk. Data were combined over two experiments and are means of 10 replications. Treatment means followed by a common letter are not significantly different according to Tukey's HSD test (P ≤ 0.05). Burkholderia refers to Burkholderia rinojensis strain A396 secondary metabolites.

Figure 3:

Root gall index as influenced by the application of nematicides. Gall rating was conducted on a scale of 0 -10 (0 = no galls, and 10 = completely galled roots) as described by Bridge and Page (1980). Data were combined over two experiments and are means of 10 replications. Treatment means followed by a common letter are not significantly different according to Tukey's HSD test (P ≤ 0.05). Burkholderia refers to Burkholderia rinojensis strain A396 secondary metabolites.
Root gall index as influenced by the application of nematicides. Gall rating was conducted on a scale of 0 -10 (0 = no galls, and 10 = completely galled roots) as described by Bridge and Page (1980). Data were combined over two experiments and are means of 10 replications. Treatment means followed by a common letter are not significantly different according to Tukey's HSD test (P ≤ 0.05). Burkholderia refers to Burkholderia rinojensis strain A396 secondary metabolites.

Non-fumigant and biological nematicides with their product application rates employed in the current study_

TreatmentApplication rate (L/ha)Nematicide/pot (μl)
Oxamyl4.6816.55
Fluopyram1.000.06
Fluensulfone8.180.48
aBurkholderia18.7137.85
Untreated control--
DOI: https://doi.org/10.2478/jofnem-2023-0025 | Journal eISSN: 2640-396X | Journal ISSN: 0022-300X
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Language: English
Submitted on: Mar 9, 2023
Published on: Jun 5, 2023
Published by: Society of Nematologists, Inc.
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year
Keywords:
biological,
fluensulfone,
fluopyram,
management,
nematicide,
non-fumigant,
oxamyl,
tobacco
Related subjects:
Life sciences,
Life sciences, other

© 2023 Md Shah Alam, Churamani Khanal, Joseph Roberts, William Rutter, published by Society of Nematologists, Inc.
This work is licensed under the Creative Commons Attribution 4.0 License.

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