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      COMPORTAMENTO DE PLANTAS DE CAFÉ ARÁBICA SUBMETIDAS A DÉFICIT HÍDRICO DURANTE O DESENVOLVIMENTO INICIAL Translated title: BEHAVIOR OF COFFEA ARABICA L. PLANTS EXPOSED TO WATER DEFICITS IN DIFFERENT PHASES OF THEIR INITIAL DEVELOPMENT

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          Abstract

          O presente trabalho objetivou estudar a influência do déficit hídrico no desenvolvimento inicial da lavoura cafeeira, aplicado em diferentes épocas: 30, 60, 90 e 120 dias após o transplantio. O experimento foi conduzido em casa de vegetação, em delineamento inteiramente ao acaso, com cinco tratamentos e três repetições. Os tratamentos consistiram na submissão das mudas transplantadas a déficits hídricos com duração fixa de 30 dias, sendo D0 = sem déficit hídrico; D1 = plantas submetidas a déficit hídrico entre o 30º e 60º dia após o transplantio; D2 = plantas submetidas a déficit hídrico entre o 60º e 90º dia após o transplantio; D3 = plantas submetidas a déficit hídrico entre o 90º e 120º dia após o transplantio e; D4 = plantas submetidas a déficit hídrico entre o 120º e 150º dia após o transplantio. Após 180 dias do transplantio avaliou-se a massa seca da parte aérea e do sistema radicular, a área foliar, o diâmetro da copa e altura das plantas. O efeito do déficit hídrico foi especialmente importante nas variáveis estudadas quando aplicado aos 30, 60 ou 90 dias após o transplantio e não influenciou de forma significativa as variáveis área foliar, diâmetro da copa e altura das plantas, quando aplicado aos 120 dias após o transplantio.

          Translated abstract

          The objective of this work was to study the influence of water deficits on the initial development of a coffee field, applied at different times: 30, 60, 90 and 120 days after transplanting. The experiment was conducted in a greenhouse, with a completely randomized design, with five treatments and three repetitions. Treatments consisted of submission of transplanted seedlings to water deficits of fixed duration of 30 days, with D0 = without water deficit, D1 = plants submitted to water deficits between 30 and 60 days after transplanting, D2 = plants submitted to water deficits between 60 and 90 days after transplanting, D3 = plants submitted to water deficits between 90 and 120 days after transplanting and, D4 = plants submitted to water deficits between 120 and 150 days after transplanting. At 180 days after transplanting we evaluated aerial and root system dry mater, leaf area, canopy diameter, and plant height. The effect of water deficit was especially important on the variables studied when applied 30, 60 or 90 days after transplanting and did not significantly influence the variables leaf area, canopy diameter, and plant height, when applied 120 days after transplanting.

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          Most cited references13

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          Field Pea Transpiration and Leaf Growth in Response to Soil Water Deficits

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            Programa Genes: Estatística Experimental e Matrizes

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              Estimating water use and irrigation requirements of coffee in Hawaii

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                idesia
                Idesia (Arica)
                Idesia
                Universidad de Tarapacá. Facultad de Ciencias Agronómicas (Arica )
                0718-3429
                December 2010
                : 28
                : 3
                : 35-39
                Affiliations
                [1 ] Universidade Federal de Viçosa Brazil
                [2 ] Universidade Federal de Viçosa Brazil
                [3 ] Universidade Federal do Espírito Santo Brazil
                [4 ] Embrapa Brazil
                [5 ] Embrapa Café Brazil
                Article
                S0718-34292010000300005
                10.4067/S0718-34292010000300005
                a24a4ce5-11eb-42f9-9d36-f79f32e8abd1

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

                History
                Product

                SciELO Chile

                Self URI (journal page): http://www.scielo.cl/scielo.php?script=sci_serial&pid=0718-3429&lng=en
                Categories
                AGRICULTURE, MULTIDISCIPLINARY

                General agriculture
                Water stress,arabica coffee,irrigated coffee production,Estresse hídrico,Coffea arabica,cafeicultura irrigada

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