Anais da Sociedade Entomológica do Brasil (1997) 26, 487-493

Carlos A.L. Oliveira, Tomomassa Matuo, José E. Santos Jr. and Mílton C. Toledo (1997)
Efeito de Espalhante-Adesivo na Eficiência dos Acaricidas Propargite e Cyhexatin no Controle do Brevipalpus phoenicis (Geijskes) (Acari: Tenuipalpidae) em Citros
[Effect of spreader-sticker on the efficacy, of mitecides propargite and cyhexatin to control Brevipalpus phoenicis (Geijskes) (Acari: Tenuipalpidae) on citrus]
Anais da Sociedade Entomológica do Brasil 26 (3), 487-493
Abstract: A field work was conducted using the mitecides propargite and cyhexatin in two formulations (WP and FW) with or without the addition of a spreader-sticker (polyoxyethylene alkylphenol ether), for the control of citrus leprosis mite, Brevipalpus phoenicis (Geijskes). Two field trials were carried out, in 1991 and 1994, in Natal citrus orchards. Spraying was performed using a tractor powered high pressure spray gun using 18 1 and 11 1 of spray solution/ tree, respectively. Effect of the spreader-sticker was evaluated counting the number of mites before and after treatments. Retention of the spray liquid on the leaves was not affected by the addition of spreader-sticker. Reduction up to 95.6% in mite population was observed with the increase in the dosage rate of the propargite, and up to 98.9% for the cyhexatin in relation to the lower dosage. Spreader-sticker did not increase the efficiency of the cyhexatin, although the total number of the mites, independently, of dosage and formulation was 50.1 % lower in treatments with spreader-sticker.
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(original language: Portuguese)
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Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Brevipalpus phoenicis	Citrus (genus)	Brazil (south)