Azadirachtin on  Oligonychus yothersi in yerba mate  Ilex paraguariensis

Alves, Luís Francisco Angeli; Martins, C. C.; Mamprim, Ana Paula; Botton, Marcos

doi:10.1590/0103-8478cr20151369

Cienc. Rural

2016

DOI: 10.1590/0103-8478cr20151369

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Azadirachtin on Oligonychus yothersi in yerba mate Ilex paraguariensis

Luís Francisco Angeli Alves

C. C. Martins

Ana Paula Mamprim

et al.

Abstract: The red mite Oligonychus yothersi is one of the main pests of yerba mate in Brazil The damage this mite causes leads to leaf drop and decreased production. There are no registered

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Systemic activity of azadirachtin on Oligonychus yothersi (Acari: Tetranychidae) on yerba mate plants

Rode,

Alves,

Loeblein

et al. 2023

Arq. Inst. Biol.

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Among the management and control tactics of the coffee berry borer Hypothenemus hampei (Ferrari), there is the use of entomopathogenic fungi. Due to the importance of prospecting isolates of entomopathogenic fungi for the control of the coffee berry borer, the objective of this study was to evaluate the efficiency of 26 isolates of entomopathogenic fungi in the control of this insect pest in the laboratory. The coffee berry borers were immersed in a solution adjusted to the concentration of 1 to 3 × 10 8 conidia/mL of each isolate and the control treatment (sterilized water). After seven days total mortality and confirmed mortality were evaluated. The isolates that caused the highest mortality and two commercial isolates were selected for evaluation of lethal concentration (LC 50 and LC 90 ) and lethal time (LT 50 and LT 90 ). Coffee berry borers were treated at different conidia concentrations for lethal concentration to assess total and confirmed mortality. For a lethal time, the coffee berry borers were treated at the concentration of 108 conidia/mL of the selected isolates, and, after two days and every 24 hours until the eighth day, the number of dead individuals was verified. Among the 26 isolates evaluated, 24 presented mortality higher than the control treatment, and three presented mortality higher than 85%. In the LC 50 and LC 90 assays, the IBCB 353 and IBCB 364 isolates were more lethal to H. hampei. In the LT 50 and LT 90 assays, the IBCB 66 and IBCB 353 isolates caused lethality in a shorter time.

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Systemic activity of azadirachtin on Oligonychus yothersi (Acari: Tetranychidae) on yerba mate plants

Rode,

Alves,

Loeblein

et al. 2023

Arq. Inst. Biol.

Self Cite

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Azadirachtin on Oligonychus yothersi in yerba mate Ilex paraguariensis

Abstract: The red mite Oligonychus yothersi is one of the main pests of yerba mate in Brazil The damage this mite causes leads to leaf drop and decreased production. There are no registered

Cited by 1 publication

References 9 publications

Systemic activity of azadirachtin on Oligonychus yothersi (Acari: Tetranychidae) on yerba mate plants

Systemic activity of azadirachtin on Oligonychus yothersi (Acari: Tetranychidae) on yerba mate plants

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