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      Eficiência de diferentes bicos e volumes de calda no controle de tripes em cebola Translated title: Efficiency of different nozzle types and volume of the insecticide solution in the control of thrips in onions

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          Abstract

          O objetivo do trabalho foi avaliar a eficiência de diferentes volumes de calda e tipo de bico no controle químico de Thrips tabaci em cebola. Dois experimentos foram conduzidos na EPAGRI, Estação Experimental de Ituporanga, SC, no período de agosto a dezembro de 1996 e 1997. Os tratamentos com bico leque e respectivos níveis de vazão foram XR 110 015 VS® - 236 L/ha, XR 110 02 VS® - 316 L/ha, XR 110 03 VS® - 472 L/ha, XR 110 04 VS® - 632 L/ha, XR 110 05 VS® - 788 L/ha, TJ 60 110 02 VS® - 316 L/ha, TJ 60 110 04 VS® - 632 L/ha; com bico cone foram Conejet TSVS® - 236 L/ha, Conejet TXVK 18® - 472 L/ha, Conejet TXVK 26® - 632 L/ha, D6 Difusor V5® - 600 L/ha, além da testemunha, sem tratamento. O delineamento experimental utilizado foi blocos ao acaso com quatro repetições. O tamanho de parcela foi de 2,8 m x 3,0 m. O inseticida usado foi clorpirifós 0,72 g. i.a./ha. A amostragem de ninfas de T. tabaci foi realizada no campo em cinco plantas escolhidas ao acaso em cada parcela. A redução populacional de tripes foi semelhante entre os diferentes volumes de calda e tipos de bico utilizados. Portanto, os bicos cone e leque aplicando volumes de calda entre 236 a 788 L/ha, apresentaram a mesma eficiência no controle de T. tabaci em cebola.

          Translated abstract

          The objective of this work was to evaluate the efficiency of different nozzle types and volume of the insecticide solution in controlling thrips (Thrips tabaci) in onions. The work was carried out from August to December, 1996 and 1997. The treatments consisted of different nozzle types (fan and cone) and different flow rates. Fan nozzles were XR 110 015 VS® - 236 L/ha, XR 110 02 VS® - 316 L/ha, XR 110 03 VS® - 472 L/ha, XR 110 04 VS® - 632 L/ha, XR 110 05 VS® - 788 L/ha, TJ 60 110 02 VS® - 316 L/ha, TJ 60 110 04 VS - 632 L/ha; and cone nozzles were Conejet TSVS® - 236 L/ha, Conejet TXVK 18® - 472 L/ha, Conejet TXVK 26® - 632 L/ha, D6 Difusor V5® - 600 L/ha. Besides these treatments there was an untreated check. The experimental design was of randomized complete blocks with four replications. The insecticide used was chlorpyrifos 0.72 g.a.i./ha. The evaluation of the number of nimphs of T. tabaci was made weekly in the field using five plants per plot. The fan or cone nozzle applying 236 L/ha to 788 L/ha of the insecticide solution (chlorpyrifos) gave similar thrips control.

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          Thrips: their Biology, Ecology and Economic Importance

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            Flutuação populacional de tripes, Thrips tabaci Lind., em cebola em Ituporanga, Santa Catarina

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              Determinação de danos de Thrips tabaci Lind. em cutivares de cebola

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Journal
                hb
                Horticultura Brasileira
                Hortic. Bras.
                Associação Brasileira de Horticultura (Vitoria da Conquista )
                1806-9991
                July 2000
                : 18
                : 2
                : 141-144
                Affiliations
                [1 ] Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina Brazil
                [2 ] Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina Brazil
                Article
                S0102-05362000000200014
                10.1590/S0102-05362000000200014
                1de52119-4539-461c-be44-168d9ef7c87d

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0102-0536&lng=en
                Categories
                HORTICULTURE

                Horticulture
                Allium cepa,thrips,chemical control,nozzles,volumes,tripes,controle químico,bicos
                Horticulture
                Allium cepa, thrips, chemical control, nozzles, volumes, tripes, controle químico, bicos

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