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Biological control of coffee root mealybugs with entomopathogenic fungi Control biológico de cochinillas de las raíces del café con hongos entomopatógenos

How to Cite
Góngora, C. E., & Gil-Palacio, Z. (2020). Biological control of coffee root mealybugs with entomopathogenic fungi. Cenicafe Journal, 71(2), 53-65. https://doi.org/10.38141/10778/71204

Dimensions
PlumX

Keywords
Puto barberi,

Metarhizium robertsii

Metarhizium anisopliae

azadiractina

Puto barberi

Metarhizium robertsii

Metarhizium anisopliae

azaridachtin

Puto barberi

Metarhizium robertsii

Metarhizium anisopliae

azadiractina

Sectión
Articles
Carmenza Esther Góngora
Zulma Gil-Palacio

Summary

Coffee root mealybugs are a limiting pest in Colombian coffee farming; Puto barberi (Cockerell, 1895) (Hemiptera: Putoidae) is the prevailing species. In order to propose a strategy for the control of this pest, strains of Metarhizium anisopliae Ma 9236 and M. robertsii were evaluated under laboratory conditions at concentrations of 1x107 conidia/mL; mortalities between 80% and 84% on P. barberi were found. They were also evaluated on coffee seedlings infested with the pest in three different trials. In the first one, 4 to 6-month-old plants infested with oviplen P. barberi females treated with 50 cm3 of: 1. M. anisopliae, 2. M. robertsii both at 2x10 10 conidia/L and 3. Water as control. With the water treatment, the infestation percentage was 100% and 25 mealybugs were found per plant. The application of M. anisopliae decreased the mealybugs infestation by 10% and reduced the population by 55%. M. robertsii decreased the infestation by 40% and the insect population by 86%. In trial 2, M. robertsii vs. Water showed results similar to those obtained in trial 1 and 50% plant protection was achieved. In trial 3, the treatments corresponded to: 1. M. robertsii (2x10 10 conidia/L). 2. Azaridachtin 6% water soluble powder (3g/L). 3. Chlorpyrifos 75% WG (3g/L) and 4. Water. In the water control treatment the infestation percentage was 65%, in the other treatments the infestations were between 11 and 22%, which differed from the control, but were statistically similar to each other. M. robertsii is a good candidate to be evaluated under commercial and field seedling conditions

Carmenza Esther Góngora, National Coffee Research Center-Cenicafé

Investigador Científico III (https://orcid.org/0000-0002-3633-1077) Disciplina de Entomología, Centro Nacional de Investigaciones de Café, Cenicafé.


Zulma Gil-Palacio, National Coffee Research Center-Cenicafé

Investigador Científico II (https://orcid.org/0000-0001-7013-1231). Disciplina de Entomología, Centro Nacional de Investigaciones de Café, Cenicafé.


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