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      Efeito da profundidade de semeadura e de rodas compactadoras submetidas a cargas verticais na temperatura e no teor de água do solo durante a germinação de sementes de milho Translated title: Effect of sowing depth and press wheels submitted to vertical loads on soil temperature and moisture contents during corn seed germination

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          Abstract

          As rodas compactadoras das semadoras-adubadoras têm como principal função, propiciar o bom contato entre o solo e a semente para garantir a germinação das sementes e a emergência das plântulas. Objetivou-se, neste trabalho, estudar a influência de três modelos de rodas compactadoras, três profundidades de semeadura e três níveis de carga sobre a roda compactadora sob a temperatura e o teor de água do solo. O trabalho foi desenvolvido na pista de ensaios de semeadura, localiza em Uberaba, MG, em Latossolo Vermelho distrófico, utilizando-se o delineamento experimental de parcelas sub-subdivididas, com 27 tratamentos e quatro repetições. As rodas com maior área de contato com o solo proporcionaram maiores valores do teor médio de água e da temperatura do solo. O nível de carga sobre a roda compactadora não afetou a temperatura e o teor de água do solo.

          Translated abstract

          Press wheels were designed to improve soil-seed contact, thus promoting good seed germination and emergence of plantules. The present investigation was aimed at studying the influence of three models of press wheel, three sowing depths and three load levels on soil temperature and moisture contents. The experiment was carried out in Uberaba, State of Minas Gerais, Brazil, in split-plot desing, 27 treatments and four repetitions. Results have shown that press wheels with bigger soil contact area provide the highest values of average soil moisture an temperature. However, load level on the press has shown no effect on soil temperature and moisture contents.

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          Manual de métodos de análise do solo

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            Berry temperature and solar radiation alter acylation, proportion: and concentration of anthocyanin in Merlot grapes

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              Fisiologia da semente

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                cagro
                Ciência e Agrotecnologia
                Ciênc. agrotec.
                Editora da Universidade Federal de Lavras (Lavras )
                1981-1829
                June 2008
                : 32
                : 3
                : 929-937
                Affiliations
                [1 ] Universidade Estadual Paulista Brazil
                [2 ] Universidade Estadual Paulista Brazil
                [3 ] Faculdades Associadas de Uberaba
                [4 ] Universidade Estadual Paulista Brazil
                [5 ] Universidade Estadual Paulista Brazil
                Article
                S1413-70542008000300034
                10.1590/S1413-70542008000300034
                62f8988f-c7c3-4d8d-9230-8c473c339a42

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

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                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1413-7054&lng=en
                Categories
                AGRICULTURE, MULTIDISCIPLINARY

                General agriculture
                Soil moisture,soil temperature,emergence,Teor de água do solo,temperatura do solo,emergência

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