Evaluation of organically acceptable insecticides as stand-alone treatments and in rotation for managing yellowmargined leaf beetle, Microtheca ochroloma (Coleoptera: Chrysomelidae), in organic crucifer production.
Pest Manag Sci
; 68(4): 573-9, 2012 Apr.
Article
en En
| MEDLINE
| ID: mdl-22231993
BACKGROUND: Yellowmargined leaf beetle, Microtheca ochroloma, is the most damaging pest of organic crucifer crops in the southern United States. Experiments were conducted over four growing seasons (2007-2010) in Alabama to evaluate some botanical and microbial insecticides approved by the Organic Materials Review Institute (OMRI) against M. ochroloma in organically grown crucifer crops. Insecticides evaluated included PyGanic(®) (pyrethrum), Aza-Direct(®) (azadiractin), Entrust(®) (spinosad), Mycotrol O(®) (Beauveria bassiana strain GHA) and NOFLY(®) [Isaria ( = Paecilomyces) fumosoroseus strain FE 9901]. Two experimental organic formulations, Tick-Ex (Metarhizium anisopliae strain F52) and MBI-203 (Chromobacterium subtsugae), and one non-OMRI-listed formulation, Novodor(®) (Bacillus thuringiensis subspecies tenebrionis), were also evaluated. The insecticides were applied as stand-alone treatments at recommended field rates on a weekly schedule. In 2010, some of the treatments were also evaluated in rotation/alternation with Entrust(®) . Insecticide efficacy was determined by comparing densities of M. ochroloma larvae and adults and crop damage ratings in treated versus untreated turnip plots. RESULTS: Entrust(®) consistently performed well in suppressing M. ochroloma adults, larvae and crop damage. PyGanic(®) was the second best treatment. PyGanic(®) or NOFLY(™) can be applied in rotation with Entrust(®) for effective management of M. ochroloma. CONCLUSION: Entrust(®) applied weekly or in alternation with PyGanic(®) or NOFLY(™) provided acceptable control of M. ochroloma in organic crucifer production.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Enfermedades de las Plantas
/
Control de Insectos
/
Brassica napus
/
Metarhizium
/
Insecticidas
Tipo de estudio:
Evaluation_studies
Límite:
Animals
Idioma:
En
Revista:
Pest Manag Sci
Asunto de la revista:
TOXICOLOGIA
Año:
2012
Tipo del documento:
Article
País de afiliación:
Estados Unidos
Pais de publicación:
Reino Unido