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      Calcium and potassium contents in nutrient solution on Phoma leaf spot intensity in coffee seedlings Translated title: Intensidade da mancha de Phoma em mudas de cafeeiro sob doses de cálcio e de potássio em solução nutritiva

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          Abstract

          ABSTRACT Coffee is one of the main export commodities of Brazilian agribusiness. Phoma leaf spot [Phoma tarda (Stewart) Boerema & Bollen] is one of the most important coffee fungal diseases in Brazil. Therefore, this study aimed to evaluate the intensity of Phoma leaf spot in coffee seedlings supplied with different rates of Ca+2 and K+. The study was conducted under controlled conditions in a growth chamber, at the Department of Phytopathology - UFLA, from February 2010 to December 2011. The assay was repeated twice under the same conditions. The nutrient solutions consisted of five concentrations of K+ (3, 4, 5, 6, 7 mmol L-1) and Ca+2 (2, 4, 6, 8 and 10 mmol L-1). The experiment was arranged in a randomized block design, with 25 treatments and three replicates, with two plants per plot. The areas under incidence progress curve (AUIPC) and severity (AUSPC) were calculated. At the lowest rate of Ca2+ (2 mmol L-1) and highest K+ (6 and 7 mmol L-1), approximately, the AUIPC was the smallest. For the AUSPC, the lowest rates of Ca+2 and K+ resulted in the lowest severities. Supply of Ca+2 and K+ in nutrient solution reduced AUIPC and AUSPC of Phoma leaf spot, and these nutrients can be recommended for the management of the disease.

          Translated abstract

          RESUMO O café é um dos principais itens de exportação do agronegócio brasileiro. A mancha de Phoma, ocasionada pelo fungo Phoma tarda (Stewart) Boerema & Bollen, é uma das mais importantes doenças do cafeeiro no Brasil. Por essa razão, este trabalho teve como objetivo avaliar a intensidade da mancha de Phoma do cafeeiro em mudas supridas com doses de Ca+2 e de K+. O experimento foi conduzido, sob condições controladas, em câmara de crescimento, no Departamento de Fitopatologia da UFLA, de fevereiro de 2010 a dezembro de 2011. O ensaio foi repetido duas vezes sob as mesmas condições. As soluções nutritivas foram compostas por cinco doses de K+ (3, 4, 5, 6 e 7 mmol L-1) e de Ca+2 (2, 4, 6, 8 e 10 mmol L-1). O delineamento foi em blocos casualizados, com 25 tratamentos, três repetições e duas plantas por unidade experimental. As áreas abaixo da curva de progresso da incidência (AACPI) e da severidade (AACPS) foram calculadas. Na menor dose de Ca+2 (2 mmol L-1) e nas maiores de K+ (6 e 7 mmol L-1), aproximadamente, observou-se menor AACPI. Para a AACPS, as menores doses de Ca+2 e de K+ resultaram em menores severidades. Os suprimentos de Ca+2 e de K+ em solução nutritiva reduziram as AACPI e AACPS da mancha de Phoma do cafeeiro e o uso desses nutrientes pode ser recomendado no manejo da doença.

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          • Record: found
          • Abstract: not found
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          The water culture method of growing plants without soil

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            • Record: found
            • Abstract: not found
            • Book: not found

            Manual do sistema Sisvar para análises estatísticas

              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              Statistica for Windows

              (1995)
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rceres
                Revista Ceres
                Rev. Ceres
                Universidade Federal de Viçosa
                2177-3491
                August 2016
                : 63
                : 4
                : 486-491
                Affiliations
                [1 ] Universidade Federal Rural de Pernambuco Brazil
                [2 ] Universidade Federal de Lavras Brazil
                [3 ] Universidade Federal de Lavras Brazil
                Article
                S0034-737X2016000400486
                10.1590/0034-737X201663040008
                ab996a74-18f9-4f16-b982-9e76800af6c0

                This work is licensed under a Creative Commons Attribution 4.0 International License.

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0034-737X&lng=en
                Categories
                AGRICULTURE, MULTIDISCIPLINARY

                General agriculture
                incidence,severity,Phoma tarda (Stewart) Boerema & Bollen,Coffea arabica L.,mineral nutrition,incidência,severidade,nutrição mineral

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