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| 8. |  | FRONZA, C. F.; ANSELMO, J.; MARQUES, J. L. B.; PINTARELLI, G. B.; CASTRO, A. de. A Blower-like approach to predict the effectiveness of vaccines in a TB dynamic. International Journal of Engineering Research and Applications, Delhi, v. 4, n. 6, p. 233-238, June 2014.| Biblioteca(s): Embrapa Agricultura Digital. |
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| 9. | | CASTRO, A. de; FRONZA, C. F.; HERAI, R. H.; ALVES, D. Evidence of deterministic evolution in the immunological memory process. In: INTERNATIONAL SYMPOSIUM ON MATHEMATICAL AND COMPUTATIONAL BIOLOGY, 9., 2009, Brasília, DF. Proceedings... Brasília, DF: BIOMAT Institute for Advanced Studies of Biosystems, 2009. p. 1-14.| Biblioteca(s): Embrapa Agricultura Digital. |
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| 10. | | CASTRO, A. de; FRONZA, C. F.; GIACHETTO, P. F.; ALVES, D. Influence of antigenic mutations in time evolution of the immune memory - a dynamic modeling. Lecture Notes in Computer Science, v. 5676, p. 133-142. Proceedings of the 4th Brazilian Symposium on Bioinformatics, 2009, held in Porto Alegre, Brazil, in July 2009.| Biblioteca(s): Embrapa Agricultura Digital. |
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Registro Completo
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Biblioteca(s): |
Embrapa Rondônia. |
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Data corrente: |
06/02/2018 |
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Data da última atualização: |
06/03/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
PASSOS, A. M. A. dos; AKER, A. M.; COSTA, R. S. C. da; SANTOS, F. C. dos; LEITE, V. P. D.; MARCOLAN, A. L. |
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Afiliação: |
ROGERIO SEBASTIAO CORREA DA COSTA, CPAF-Rondonia; ALAERTO LUIZ MARCOLAN, CPAF-Rondonia. |
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Título: |
Effect of cover crops on physico-chemical attributes of soil in a short-term experiment in the southwestern Amazon region. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
African Journal of Agricultural Research v. 12, n. 47, p. 3339-3347, Nov. 2017. |
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DOI: |
10.5897/AJAR2017.12800 |
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Idioma: |
Português |
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Conteúdo: |
No-tillage is an agricultural system that is proposed as a sustainable soil management system. This paper aims to evaluate the short-term effects of cover crops on a no-tillage system, by assessing a number of physical and chemical attributes of soil of the Brazilian Amazon region. The experiment was carried out in a typical Ferralsol under a no-tillage system from March to December, 2014. A randomized block design, with four replicates was used. The performance and effects of fourteen cover crops (Cajanus cajan, Canavalia ensiformis, Crotalaria juncea, Crotalaria ochroleuca, Crotalaria spectabilis, Stizolobium aterrima, Stizolobium cinereum, Pennisetum glaucum, Sorghum bicolor, Sorghum sudanense, Urochloa brizanha cv. Xaraés, Urochloa brizantha cv. Piatã and Urochloa ruziziensis and Zea mays) and fallow (control treatment) on the soil quality were assessed. The cover crops were sown in the off season in April 2014, before the summer crop (maize). The levels of P, K, Ca2+, Mg2+, Al3+, H+Al, saturation by aluminum, sum of bases, organic matter, pH and resistance to soil penetration were evaluated following the end of the cover crops growth. Some near-surface soil attributes were affected by the cover crops. Urochloa species improved the levels of potassium in the soil at depths up to 5 cm below the surface. The highest penetration resistance was observed in the superficial layer between 12 and 16 cm deep, with penetration resistance values varying between 2472 and 2912 kPa. The Urochloa exhibited satisfactory agronomic performance when grown under a simulated crop livestock integration system. It is concluded that the use of cover crops in a no-till system has the potential to improve the chemical quality of soil in the Southwestern Amazon region. MenosNo-tillage is an agricultural system that is proposed as a sustainable soil management system. This paper aims to evaluate the short-term effects of cover crops on a no-tillage system, by assessing a number of physical and chemical attributes of soil of the Brazilian Amazon region. The experiment was carried out in a typical Ferralsol under a no-tillage system from March to December, 2014. A randomized block design, with four replicates was used. The performance and effects of fourteen cover crops (Cajanus cajan, Canavalia ensiformis, Crotalaria juncea, Crotalaria ochroleuca, Crotalaria spectabilis, Stizolobium aterrima, Stizolobium cinereum, Pennisetum glaucum, Sorghum bicolor, Sorghum sudanense, Urochloa brizanha cv. Xaraés, Urochloa brizantha cv. Piatã and Urochloa ruziziensis and Zea mays) and fallow (control treatment) on the soil quality were assessed. The cover crops were sown in the off season in April 2014, before the summer crop (maize). The levels of P, K, Ca2+, Mg2+, Al3+, H+Al, saturation by aluminum, sum of bases, organic matter, pH and resistance to soil penetration were evaluated following the end of the cover crops growth. Some near-surface soil attributes were affected by the cover crops. Urochloa species improved the levels of potassium in the soil at depths up to 5 cm below the surface. The highest penetration resistance was observed in the superficial layer between 12 and 16 cm deep, with penetration resistance values varying between 2472 and 2912 kPa. T... Mostrar Tudo |
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Palavras-Chave: |
Sustentabilidade. |
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Thesagro: |
Esterco; Física do solo; Planta de cobertura; Plantio direto; Química do solo. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/168334/1/Effect-cover.pdf
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Marc: |
LEADER 02628naa a2200265 a 4500
001 2087212
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008 2017 bl --- 0-- u #d
024 7 $a10.5897/AJAR2017.12800$2DOI
100 1 $aPASSOS, A. M. A. dos
245 $aEffect of cover crops on physico-chemical attributes of soil in a short-term experiment in the southwestern Amazon region.$h[electronic resource]
260 $c2017
520 $aNo-tillage is an agricultural system that is proposed as a sustainable soil management system. This paper aims to evaluate the short-term effects of cover crops on a no-tillage system, by assessing a number of physical and chemical attributes of soil of the Brazilian Amazon region. The experiment was carried out in a typical Ferralsol under a no-tillage system from March to December, 2014. A randomized block design, with four replicates was used. The performance and effects of fourteen cover crops (Cajanus cajan, Canavalia ensiformis, Crotalaria juncea, Crotalaria ochroleuca, Crotalaria spectabilis, Stizolobium aterrima, Stizolobium cinereum, Pennisetum glaucum, Sorghum bicolor, Sorghum sudanense, Urochloa brizanha cv. Xaraés, Urochloa brizantha cv. Piatã and Urochloa ruziziensis and Zea mays) and fallow (control treatment) on the soil quality were assessed. The cover crops were sown in the off season in April 2014, before the summer crop (maize). The levels of P, K, Ca2+, Mg2+, Al3+, H+Al, saturation by aluminum, sum of bases, organic matter, pH and resistance to soil penetration were evaluated following the end of the cover crops growth. Some near-surface soil attributes were affected by the cover crops. Urochloa species improved the levels of potassium in the soil at depths up to 5 cm below the surface. The highest penetration resistance was observed in the superficial layer between 12 and 16 cm deep, with penetration resistance values varying between 2472 and 2912 kPa. The Urochloa exhibited satisfactory agronomic performance when grown under a simulated crop livestock integration system. It is concluded that the use of cover crops in a no-till system has the potential to improve the chemical quality of soil in the Southwestern Amazon region.
650 $aEsterco
650 $aFísica do solo
650 $aPlanta de cobertura
650 $aPlantio direto
650 $aQuímica do solo
653 $aSustentabilidade
700 1 $aAKER, A. M.
700 1 $aCOSTA, R. S. C. da
700 1 $aSANTOS, F. C. dos
700 1 $aLEITE, V. P. D.
700 1 $aMARCOLAN, A. L.
773 $tAfrican Journal of Agricultural Research$gv. 12, n. 47, p. 3339-3347, Nov. 2017.
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