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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
23/03/1992 |
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Data da última atualização: |
23/03/1992 |
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Autoria: |
LAL, R. |
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Afiliação: |
International Institute of Tropical Agriculture. |
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Título: |
Soil Erosion on Alfisols in Western Nigeria , IV. Nutrient Element Losses in Runoff and Eroded Sediments. |
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Ano de publicação: |
1976 |
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Fonte/Imprenta: |
Geoderma, v.16, p.403-417, 1976. |
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Idioma: |
Inglês |
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Conteúdo: |
Nutrient element losses in runoff and eroded sediments were monitored during 1972 on different slopes and under different soil and crop management treatments. The experiments were conducted on 25 x 4 m field runoff plots, established on natural slopes of 1, 5, 10 and 15%. The soil and crop management treatments consisted of bare fallow (plowed), maize-maize (plowed and mulched), maize-maize (plowed), maize-cowpeas (no-till), and cowpeas-maize (plowed). Total loss of nutrient elements in runoff and eroded soil materials was significantly affected by slope and by soil and crop management treatments. Total annual nutrient element losses in runoff were 55 Kg/ha for bare-fallow, 17 Kg/ha for maize-maize (plowed), 12 Kg/ha for cowpeas-maize (plowed), 2.3 Kg/ha for maize-maize (plowed and mulched) and 4.3 Kg/ha for maize-cowpeas (no-till). The concentration of nitrate in seepage water was two or three times higher than in surface water. Nutrient losses in eroded soil materials from the mulched and no-till treatments were negligible. From the plowed treatments, greatest losses were of organic matter and total nitrogen. The enrichment ratios were 2.4 times for organic carbon, 1.6 times for N, and 5.8 times for available phosphorus. |
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Categoria do assunto: |
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Marc: |
LEADER 01598naa a2200121 a 4500
001 1646566
005 1992-03-23
008 1976 bl --- 0-- u #d
100 1 $aLAL, R.
245 $aSoil Erosion on Alfisols in Western Nigeria , IV. Nutrient Element Losses in Runoff and Eroded Sediments.
260 $c1976
520 $aNutrient element losses in runoff and eroded sediments were monitored during 1972 on different slopes and under different soil and crop management treatments. The experiments were conducted on 25 x 4 m field runoff plots, established on natural slopes of 1, 5, 10 and 15%. The soil and crop management treatments consisted of bare fallow (plowed), maize-maize (plowed and mulched), maize-maize (plowed), maize-cowpeas (no-till), and cowpeas-maize (plowed). Total loss of nutrient elements in runoff and eroded soil materials was significantly affected by slope and by soil and crop management treatments. Total annual nutrient element losses in runoff were 55 Kg/ha for bare-fallow, 17 Kg/ha for maize-maize (plowed), 12 Kg/ha for cowpeas-maize (plowed), 2.3 Kg/ha for maize-maize (plowed and mulched) and 4.3 Kg/ha for maize-cowpeas (no-till). The concentration of nitrate in seepage water was two or three times higher than in surface water. Nutrient losses in eroded soil materials from the mulched and no-till treatments were negligible. From the plowed treatments, greatest losses were of organic matter and total nitrogen. The enrichment ratios were 2.4 times for organic carbon, 1.6 times for N, and 5.8 times for available phosphorus.
773 $tGeoderma$gv.16, p.403-417, 1976.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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| Registros recuperados : 22 | |
| 21. |  | SERAFIM, M. E.; MENDES, I. de C.; WU, J.; ONO, F. B.; ZANCANARO, L.; VALENDORFF, J. D. P.; ZEVIANI, W. M.; PIERANGELI, M. A. P.; FAN, M.; LAL, R. Soil physicochemical and biological properties in soybean areas under no-till Systems in the Brazilian Cerrado. Science of the Total Environment, v. 862, 160674, 2023. p. 1-11| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Cerrados. |
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| 22. | | BRIEDIS, C.; SA, J. C. de M.; LAL, R.; TIVET, F.; FRANCHINI, J. C.; FERREIRA, A. de O.; HARTMAN, D. da C.; SCHIMIGUEL, R.; BRESSAN, P. T.; INAGAKI, T. M.; ROMANIW, J.; GONÇALVES, D. R. P. How does no-till deliver carbon stabilization and saturation in highly weathered soils?. Catena, v. 163, p. 13-23, 2018.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Soja. |
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| Registros recuperados : 22 | |
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