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      Efeito de diferentes volumes de calda no raleio químico de frutos da macieira 'Gala' Translated title: Effect of fruit thinners at different volumes on 'Gala' apple tree

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          Abstract

          O objetivo deste trabalho foi comparar a eficiência de diferentes volumes de calda de raleantes químicos em plantas de macieira (Malus domestica Borkh), cultivar Gala. Foram utilizados o ácido naftalenoacético (ANA) (15 g/ha de i.a.) e o carbaryl (1naftilNmetilcarbamato) (1.000 g/ha de i.a.) aplicando-se 16, 300, 430, 950, 1.300 e 1.900 L/ha de calda. O ANA foi aplicado cinco dias após a plena floração (DAPF), e o carbaryl, aos 15 DAPF. O volume de calda não parece ter sidoo fator mais importante para a eficiência do raleio: os tratamentos utilizados provocaram respostas semelhantes nas plantas. O peso e a porcentagem de frutas >66 mm, em todos os tratamentos, com exceção de 430 L/ha, foram maiores do que os da testemunha, mas não diferiram entre si.

          Translated abstract

          The aim of this trial was to compare the thinning efficiency ofchemicalssprayed at different volumes, in apple (Malus domestica Borkh), cultivar Gala. Naphthaleneacetic acid (NAA) (15 g/ha of a.i.) and carbaryl (1naphthylNmethylcarbamate) (1,000 g/ha of a.i.) were used in spray solutions at 16, 300, 430, 950, 1,300 and 1,900 L/ha maintaining the dose of each product per hectare. NAA was sprayed at five days after full bloom (DAFB) and carbaryl at 15 DAFB. The volume did not play a major role on the efficiency of the treatments on fruit thinning: the different spray volumes showed similar thinning efficiency on 'Gala' apple. Except at 430 L/ha, chemical thinners sprayed at different volumes gave fruit weight and percentage of fruits >66 mm greater than the control, but did not differ among them.

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          Pesticide Application Methods

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            Physiology of temperate zone fruit tress

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              CHEMICAL THINNING OF GOLDEN DELICIOUS APPLE WITH NAAM AND/OR CARBARYL IN COMBINATION WITH A SPREADER AND THE ANTI-RUSSETING AGENT GA4+7

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Journal
                pab
                Pesquisa Agropecuária Brasileira
                Pesq. agropec. bras.
                Embrapa Informação Tecnológica (Brasília )
                1678-3921
                November 2000
                : 35
                : 11
                : 2191-2195
                Affiliations
                [1 ] Embrapa Brazil
                Article
                S0100-204X2000001100010
                10.1590/S0100-204X2000001100010
                b2ac234d-ecce-4e99-828f-af1a7d183f99

                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=0100-204X&lng=en
                Categories
                AGRICULTURE, DAIRY & ANIMAL SCIENCE
                AGRICULTURE, MULTIDISCIPLINARY

                Animal agriculture,General agriculture
                Malus domestica,apples,NAA,carbaryl,plant growth substances,maçã,ácido naftalenoacético,substâncias de crescimento vegetal

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