2000
DOI: 10.1590/s0006-87052000000200013
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Absorção de nutrientes pela soja cultivada no sistema de plantio direto em função da calagem na superfície

Abstract: RESUMOAs conseqüências das alterações químicas do solo pela calagem na superfície, em sistema de plantio direto, na nutrição mineral das culturas anuais, não são muito conhecidas. Com o objetivo de avaliar a absorção de nutrientes pela soja e seus reflexos sobre a produção de grãos, em função de doses de calcário na superfície, no sistema de plantio direto, foi conduzido um experimento em um Latossolo Vermelho-Escuro distrófico, textura média, em Ponta Grossa (PR). Os tratamentos, dispostos em blocos completos… Show more

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Cited by 52 publications
(31 citation statements)
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“…Contrary to the one obtained by Pedrinho Junior et al (2004) working with soybeans in protected environment, it was found that the greatest accumulation of nutrients in soy was to P, Mg and S. Data was obtained by Caires and Fonseca (2000) working with soybeans in no-tillage system showing that nutrient extraction from the shoot by plant soybeans have the following sequence N>K>Ca>P>Mg>S. Certainly, these values vary according to the levels available in each soil, with the environment and with the ability to extract each cultivar. The average yield of soya beans increased depending on the dose of LSM, fitting by regression to the second degree polynomial function (Figure 1), and the dose that presented the greatest productivity was 80.3 m 3 ha -1 of liquid pig manure, 4412 kg ha -1 of grain.…”
Section: ) -------------------------Kg Ha -1 ---------------------contrasting
confidence: 62%
“…Contrary to the one obtained by Pedrinho Junior et al (2004) working with soybeans in protected environment, it was found that the greatest accumulation of nutrients in soy was to P, Mg and S. Data was obtained by Caires and Fonseca (2000) working with soybeans in no-tillage system showing that nutrient extraction from the shoot by plant soybeans have the following sequence N>K>Ca>P>Mg>S. Certainly, these values vary according to the levels available in each soil, with the environment and with the ability to extract each cultivar. The average yield of soya beans increased depending on the dose of LSM, fitting by regression to the second degree polynomial function (Figure 1), and the dose that presented the greatest productivity was 80.3 m 3 ha -1 of liquid pig manure, 4412 kg ha -1 of grain.…”
Section: ) -------------------------Kg Ha -1 ---------------------contrasting
confidence: 62%
“…Segundo Caires & Fonseca (2000), a cada 1000,00 kg de grãos de soja exportados na produção, retira-se do solo 8,0 kg de P e 65,6 kg de K.…”
Section: Introductionunclassified
“…Assim, o P adsorvido à superfície de óxi-dos de Fe e Al pode ser maior, ocorrendo maior liberação de P para a solução do solo com a elevação do pH. Caires e Fonseca (2000) verificaram aumento na concentração de P em folhas de soja, em função da aplicação de calcário, apesar de a análise do solo não ter revelado maior disponibilidade desse nutriente.…”
Section: Resultsunclassified