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      Teores de nutrientes e qualidade fisiológica de sementes de feijão em resposta à adubação foliar com manganês e zinco Translated title: Nutrient contents and physiological quality of common bean seeds in response to leaf fertilization with manganese and zinc

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          Abstract

          No presente trabalho, objetivou-se avaliar os teores de nutrientes minerais e a qualidade fisiológica de sementes de feijão (Phaseolus vulgaris L.), em resposta à adubação foliar com manganês e zinco. O experimento foi desenvolvido a campo em Latossolo Vermelho-Amarelo distrófico fase cerrado, em Ijaci (MG). Utilizou-se o esquema fatorial em blocos casualizados, com quatro repetições, sendo os tratamentos formados pela combinação de cinco doses de Mn (0, 75, 150, 300 e 600 g ha-1) e cinco de Zn (0, 50, 100, 200 e 400 g ha-1), fracionadas em duas pulverizações foliares, sendo metade aplicada aos 25 e o restante aos 35 dias após a emergência das plântulas. Avaliaram-se os teores de nutrientes minerais presentes nas sementes e sua qualidade fisiológica pelos testes padrão de germinação e de vigor, incluindo a primeira contagem, envelhecimento acelerado e da condutividade elétrica. Com a adubação foliar com manganês e zinco foram obtidos acréscimos lineares dos teores de Mn e Zn nas sementes de feijão. Os teores de N, P, B e Cu nas sementes foram influenciados pela adubação com manganês e zinco, não ocorrendo entretanto nenhum efeito destes micronutrientes sobre os teores dos demais nutrientes determinados nas sementes (K, Ca, Mg, Fe e S). A qualidade fisiológica das sementes mostrou-se influenciada pela adubação mangânica, quando estimada pelo teste de condutividade elétrica. A qualidade fisiológica das sementes de feijão não foi afetada pela adubação com zinco.

          Translated abstract

          The objective of this work was to evaluate the contents of nutrients and the physiological quality of seeds from common bean that had leaf application of manganese and zinc. The experiment was carried out at Dystrophic Red-Yellow Latosol 'cerrado' phase, in Ijaci, Minas Gerais State, Brazil. A randomized block design with four replicates was analyzed in a factorial arrangement, being the treatments formed by the combination of five rates of Mn (0, 75, 150, 300 and 600 g ha-1) and five rates of Zn (0, 50, 100, 200 and 400 g ha-1), split in leaf sprayings at 25 and 35 days after emergency. It was evaluated the content of nutrients present in the seeds and its physiological quality, through the standart germination test and vigor test by means of first counting, accelerated aging and electric conductivity. The leaf application of manganese and zinc promoted linear increments in the contents of Mn and Zn in the seeds of bean. The seed contents of N, P, B and Cu were influenced by the application of manganese and zinc. The physiologic quality of seeds was influenced by manganese fertilization, when estimated by the test of electrical conductivity. Zinc did not affect the physiologic quality of bean seeds.

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          Most cited references20

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          Mineral nutrition of higher plants

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            Nutrient Availability in Soils

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              Importância da adubação na qualidade dos produtos agrícolas

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                brag
                Bragantia
                Bragantia
                Instituto Agronômico de Campinas (Campinas )
                1678-4499
                2005
                : 64
                : 1
                : 83-88
                Affiliations
                [1 ] Universidade Estadual de Goiás
                [2 ] Universidade Federal de Viçosa Brazil
                [3 ] Universidade Federal de Lavras Brazil
                Article
                S0006-87052005000100009
                10.1590/S0006-87052005000100009
                27b238d5-84a1-4676-90cd-15632af9cc96
                Product
                Product Information: website
                Categories
                AGRICULTURE, MULTIDISCIPLINARY

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