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Mafra,Maria Sueli Heberle; Cassol,Paulo Cezar; Albuquerque,Jackson Adriano; Correa,Juliano Corulli; Grohskopf,Marco André; Panisson,Jonas. |
O objetivo deste trabalho foi estimar taxas de acúmulo de C orgânico em Latossolo Vermelho adubado com adubo solúvel e dejeto líquido de suíno e cultivado em plantio direto. O experimento foi conduzido em Campos Novos, SC, e os seguintes tratamentos foram aplicados anualmente: sem adubação; adubo solúvel; 25 m3 ha-1 de dejeto líquido + adubo solúvel; e doses de 25, 50, 100 e 200 m3 ha-1 de dejeto líquido. Foram determinados: os estoques de C orgânico (CO) na camada de 0-20 cm do solo; a adição de C pela fitomassa dos cultivos e pelo dejeto líquido de suíno; as taxas anuais de fixação de C; e os coeficientes de humificação (k1) e de mineralização (k2) de CO do solo. As taxas de fixação de C real e aparente aumentaram de acordo com as doses de dejeto, tendo... |
Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Adubo orgânico; Fixação de carbono; Matéria orgânica; Sistema conservacionista; Suinocultura.. |
Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014000800630 |
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Grohskopf,Marco André; Cassol,Paulo Cezar; Correa,Juliano Corulli; Mafra,Maria Sueli Heberle; Panisson,Jonas. |
The application of pig slurry may have a different effect on nitrogen dynamics in soil compared to mineral fertilization. Thus, the aim of this study was to determine the different forms of organic N in a Latossolo Vermelho distroférrico (Typic Hapludox) and their relationship to N uptake by crops in response to 10 years of annual application of pig slurry and mineral fertilizer. The treatments were application rates of 0, 25, 50, 100, and 200 m3 ha-1 of pig slurry, in addition to mineral fertilizer, organized in a randomized block design with four replications. The N contents were determined in the plant tissue and in the forms of total N and acid hydrolyzed fractions: ammonium-N, hexosamine-N, α-amino-N, amide-N, and unidentified-N. Annual application of... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Manure; N availability; N fractionation. |
Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000100127 |
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Rauber,Luiz Paulo; Andrade,Andréia Patrícia; Friederichs,Augusto; Mafra,Álvaro Luiz; Baretta,Dilmar; Rosa,Márcio Gonçalves da; Mafra,Maria Sueli Heberle; Correa,Juliano Corulli. |
ABSTRACT Studies of the successive application of manure as fertilizer and its combined effect with long-term soil management systems are important to the identification of the interdependence of physical attributes. The aim of this study was to evaluate changes in the physical properties of a Rhodic Kandiudox under management systems employing successive applications of pig slurry and poultry litter, and select physical indicators that distinguish these systems using canonical discriminant analysis (CDA). The systems consisting of treatments including land use, management and the application time of organic fertilizers are described as follows: silage maize under no-tillage (NT-M7 years); silage maize under conventional tillage (CT-M20 years); annual... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crop system; Organic fertilization; Soil quality. |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000400354 |
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