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Seasonal abundance of thrips on snap beans with notes on their insecticidal control

By: Contributor(s): Material type: ArticleArticleLanguage: English Description: (6-7):56-63Subject(s): LOC classification:
  • 28937
 In: MSAC Research JournalSummary: Se estudio la poblacion de trips durante la epoca de siembra (nov. 1978-mayo 1979) y el efecto de la aplicacion de insecticidas para su control en College Exptl. Station de Mountain State Agricultural College (La Trinidad, Benguet, Filipinas). Se muestrearon semanalmente hojas de habichuela con ayuda de una lupa. La efectividad de los insecticidas se determino por el no. de trips encontrados antes y despues de la aplicacion. Las infestaciones mas fuertes se presentaron durante las etapas vegetativa e iniciacion de la floracion. En consecuencia, la infestacion max. fue durante ene. y feb. La poblacion de trips disminuyo considerablemente de abril a mayo. Es necesario efectuar un estricto control de trips durante los meses pico. Se recomienda fosalona (Zolone 35 por ciento concentrado emulsionable) en dosis de 500, 600 y 700 g de i.a. (RA-CIAT)Summary: Thrip population during the planting season (Nov. 1978-May 1979) and the effect of insecticide application to control thrips were studied at the College Exptl. Station of Mountain State Agricultural College (La Trinidad, Benguet, Philippines). Snap bean leaves were sampled weekly with the aid of a magnifying glass. The efficacy of the insecticides was determined by the no. of thrips found before and after application. The heaviest infestations occurred during the vegetative and the flower initiation stages. Consequently, peak infestation was during Jan. and Feb. Thrip population decreased considerably from April to May. Strict control of thrips is necessary during peak mo. Phosalone (Zolone 35 percent emulsifiable concentrate) at 500, 600, and 700 g a.i. is recommended. (AS)
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Se estudio la poblacion de trips durante la epoca de siembra (nov. 1978-mayo 1979) y el efecto de la aplicacion de insecticidas para su control en College Exptl. Station de Mountain State Agricultural College (La Trinidad, Benguet, Filipinas). Se muestrearon semanalmente hojas de habichuela con ayuda de una lupa. La efectividad de los insecticidas se determino por el no. de trips encontrados antes y despues de la aplicacion. Las infestaciones mas fuertes se presentaron durante las etapas vegetativa e iniciacion de la floracion. En consecuencia, la infestacion max. fue durante ene. y feb. La poblacion de trips disminuyo considerablemente de abril a mayo. Es necesario efectuar un estricto control de trips durante los meses pico. Se recomienda fosalona (Zolone 35 por ciento concentrado emulsionable) en dosis de 500, 600 y 700 g de i.a. (RA-CIAT) spa

Thrip population during the planting season (Nov. 1978-May 1979) and the effect of insecticide application to control thrips were studied at the College Exptl. Station of Mountain State Agricultural College (La Trinidad, Benguet, Philippines). Snap bean leaves were sampled weekly with the aid of a magnifying glass. The efficacy of the insecticides was determined by the no. of thrips found before and after application. The heaviest infestations occurred during the vegetative and the flower initiation stages. Consequently, peak infestation was during Jan. and Feb. Thrip population decreased considerably from April to May. Strict control of thrips is necessary during peak mo. Phosalone (Zolone 35 percent emulsifiable concentrate) at 500, 600, and 700 g a.i. is recommended. (AS) eng

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