Efecto de concentraciones subletales de flufenoxuron sobre parámetros poblacionales de Tetranychus urticae Koch (Acari: Tetranychidae)

Reproductive parameters of Phytoseiulus macropilis (Banks) fed with Tetranychus urticae Koch (Acari: Phytoseiidae, Tetranychidae) in laboratory.

Predatory mites that belong to the Phytoseiidae family are one of the main natural enemies of phytophagous mites, thus allowing for their use as a biological control. Phytoseiulus macropilis (Banks, 1904) (Acari: Phytoseiidae) is among the main species of predatory mites used for this purpose. Tetranychus urticae Koch, 1836 (Acari: Tetranychidae) is considered to be one of the most important sp...

Control of two–spotted spider mite Tetranychus urticae Koch (Acari: Tetranychidae) by some selected chemicals

The experiment was conducted to study the effectiveness of four commonly used chemicals viz., deltamethrin, cypermethrin, malathion and sulphur against two-spotted spider mite (TSSM), Tetranychus urticae Koch on potted bean plants and on excised leaf discs. Mite population remained significantly lower in all treated plots except malathion treatment. The population of T. urticae differed signifi...

Pyrethroid Lambdacyhalothrin-Induced Population Increase of Tetranychus urticae Koch (Acari:

J. Agric. Entomol. l(}(3):197-203 (July 1993) ABSTRACT Based on data from apple trees without the presence of any predatory mites, the effect of the pyrethroid lambdacyhalothrin on population density of the twospotted spider mite, Tetranychus urticae Koch, is reported. Results show that significantly (P < 0.05) higher numbers of T. urticae were found in pyrethroid·treatcd trees relative to the ...

Description de Hyalomma dromedarii (Koch 1844) Morphologie de la larve et de la nymphe

Estimación de Parámetros de Circuitos Impresos: Un Estudio de Caso

os circuitos digitales modernos operan a frecuencias en exceso de 20 MHz y, salvo aplicaciones relativamente sencillas, requieren circuitos impresos multicapa para su realización física. Es comúnmente aceptado que el circuito impreso es una componente importante de un sistema dado y que afecta tanto el comportamiento de éste, como a su reproducibilidad industrial y a la confiabilidad del produc...