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Efeito do óleo de laranja no controle do pulgão da erva-doce
Authors
Ivanildo Cavalcanti de Albuquerque
Jacinto de Luna Batista
+3 more
Carlos Henrique de Brito
Luciano de Medeiros Pereira Brito
Edson Batista Lopes
Publication date
14 August 2009
Publisher
Abstract
Verificou-se no cultivo da erva-doce nos Estados da Bahia, Sergipe, ParaÃba e Pernambuco, um alto Ãndice de agro-quÃmicos, visando combater o pulgão Hyadaphis foeniculi. O objetivo desta pesquisa foi avaliar o efeito do óleo de laranja Prev-Am (sodium tetraborohydrate decahydrate), na mortalidade de pulgão H. foeniculi. A pesquisa foi conduzida na Estação Experimental de Lagoa Seca, pertencente à EMEPA S/A. Quarenta e oito horas após a aplicação, uma flor da umbela foi coletada e dela retirada os pulgões, os quais foram colocados em uma placa de âpetriâ de 9 cm de diâmetro.Em seguida, foram contados em dois lotes, considerando o número de insetos mortos e vivos, sendo tabulados para posterior análise. Os dados foram submetidos à análise de variância utilizando-se o delineamento experimental blocos ao acaso composto de seis tratamentos (doses de 0,3; 0,4; 0,5; 0,6; 0,7% de óleo de laranja (Prev-am)) e água (controle) e cinco repetições. Os dados obtidos foram submetidos à análise de regressão. O óleo de laranja (Prev-am) controla eficazmente H. foeniculi, já a partir da concentração de 0,3%, sendo sua eficiência maior nas doses de 0,6 e 0,7%. O produto não é mortÃfero para a joaninha (Cycloneda sanguinea), podendo ser empregado em programas de manejo integrado de pragas. Palavras-chave: Foeniculum vulgare, afideo, óleo vegetal, joaninha, umbela. ABSTRACT In the properties where fennel is grown, in the states of Bahia, Sergipe, Pernambuco and Paraiba, at the Northeast of Brazil, a high rate of usage of pesticides in the crop, aiming to control the aphid Hyadaphis foeniculi. The purpose of this study was to evaluate the effect of orange oil Prev-Am (sodium tetraborohydrate decahydrate), in the control of H. foeniculi aphid of the fennel crop. The trial was conducted in a fennel field located in Lagoa Seca Experimental Station, belonging to the EMEPA-PB. Forty-eight hours after the product has been sprayed, one flower of the umbel was collected and removed her aphids, which were placed in a "petri" plate from 9cm in diameter. As a following step, the insects were counted as part of two groups, considering the number of insects dead and alive, being tabulated for later analysis. The data were subjected to analysis of variance, using the experimental design of randomized blocks composed of six treatments (doses of 0.3, 0.4, 0.5, 0.6, 0.7% of orange oil (Prev-am) and pure water as check, with five repetitions. The data were submitted to the regression analysis. The orange oil (Prev-am) controls effectively H. foeniculi at the concentration of 0.3%, increasing the control up to concentrations of 0.6 and 0.7%. The product does not kill ladybugs (Cycloneda sanguinea) and can be used in programs for integrated pest management. Keywords: Foeniculum vulgare, aphid, vegetable oil, ladybug, umbel.</div
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Engenharia Ambiental: Pesquisa e Tecnologia (E-Journal, Unipinhal - Universitário de Espírito Santo do Pinhal)
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Last time updated on 30/10/2019