Crescimento, fotossintese e eficiencia do uso de nitrogenio em milho, feijao e mandioca submetidos a dois niveis de N no solo
Growth and N uptake in pot-grown maize, beans, and cassava were evaluated under 2 levels of soil N at CIAT-Palmira (Colombia). The lower amount of the element reduced its uptake by the 3 species, resulting in lower tissue concn., especially in the leaves. Under low N, DM accumulation was also reduce...
| Autores principales: | , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Portugués |
| Publicado: |
1987
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/88594 |
| _version_ | 1855520842775003136 |
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| author | Porto, M.C.M. El-Sharkawy, Mabrouk A. Cock, James H. Hernández, A. del P. Cadena, G. de |
| author_browse | Cadena, G. de Cock, James H. El-Sharkawy, Mabrouk A. Hernández, A. del P. Porto, M.C.M. |
| author_facet | Porto, M.C.M. El-Sharkawy, Mabrouk A. Cock, James H. Hernández, A. del P. Cadena, G. de |
| author_sort | Porto, M.C.M. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Growth and N uptake in pot-grown maize, beans, and cassava were evaluated under 2 levels of soil N at CIAT-Palmira (Colombia). The lower amount of the element reduced its uptake by the 3 species, resulting in lower tissue concn., especially in the leaves. Under low N, DM accumulation was also reduced 5 wk. after planting for maize and beans, and 7 wk. after planting for cassava. Higher amounts of N in the soil increased leaf expansion and photosynthesis (Pn) in maize and beans 3 and 4 wk. after planting, resp., and in cassava after 7 wk. Cassava plants tended to increase N-use efficiency, slightly but nonsignificantly, under low N. Maize used N more efficiently; however, the existence of a real difference between crops cannot be affirmed due to the reduced soil N concn. (AS) |
| format | Journal Article |
| id | CGSpace88594 |
| institution | CGIAR Consortium |
| language | Portugués |
| publishDate | 1987 |
| publishDateRange | 1987 |
| publishDateSort | 1987 |
| record_format | dspace |
| spelling | CGSpace885942023-02-15T05:24:13Z Crescimento, fotossintese e eficiencia do uso de nitrogenio em milho, feijao e mandioca submetidos a dois niveis de N no solo Porto, M.C.M. El-Sharkawy, Mabrouk A. Cock, James H. Hernández, A. del P. Cadena, G. de manihot esculenta soil fertility nutrient uptake leaves leaf area dry matter photosynthesis composition cultivation plant anatomy plant physiological process plant physiology soil requirements starch crops fertilidad del suelo absorcion de nutrimentos hojas area foliar materia seca fotosintesis Growth and N uptake in pot-grown maize, beans, and cassava were evaluated under 2 levels of soil N at CIAT-Palmira (Colombia). The lower amount of the element reduced its uptake by the 3 species, resulting in lower tissue concn., especially in the leaves. Under low N, DM accumulation was also reduced 5 wk. after planting for maize and beans, and 7 wk. after planting for cassava. Higher amounts of N in the soil increased leaf expansion and photosynthesis (Pn) in maize and beans 3 and 4 wk. after planting, resp., and in cassava after 7 wk. Cassava plants tended to increase N-use efficiency, slightly but nonsignificantly, under low N. Maize used N more efficiently; however, the existence of a real difference between crops cannot be affirmed due to the reduced soil N concn. (AS) 1987 2017-10-12T08:03:30Z 2017-10-12T08:03:30Z Journal Article https://hdl.handle.net/10568/88594 pt Limited Access PORTO, M.C.M.; EL-SHARKAWY, M.A.; COCK, J.H.; HERNANDEZ, A. DEL P.; CADENA, G. DE. 1987. Crescimento, fotossintese e eficiencia do uso de nitrogenio em milho, feijao e mandioca submetidos a dois niveis de N no solo. Revista Brasileira de Mandioca. 6(1):35-47. |
| spellingShingle | manihot esculenta soil fertility nutrient uptake leaves leaf area dry matter photosynthesis composition cultivation plant anatomy plant physiological process plant physiology soil requirements starch crops fertilidad del suelo absorcion de nutrimentos hojas area foliar materia seca fotosintesis Porto, M.C.M. El-Sharkawy, Mabrouk A. Cock, James H. Hernández, A. del P. Cadena, G. de Crescimento, fotossintese e eficiencia do uso de nitrogenio em milho, feijao e mandioca submetidos a dois niveis de N no solo |
| title | Crescimento, fotossintese e eficiencia do uso de nitrogenio em milho, feijao e mandioca submetidos a dois niveis de N no solo |
| title_full | Crescimento, fotossintese e eficiencia do uso de nitrogenio em milho, feijao e mandioca submetidos a dois niveis de N no solo |
| title_fullStr | Crescimento, fotossintese e eficiencia do uso de nitrogenio em milho, feijao e mandioca submetidos a dois niveis de N no solo |
| title_full_unstemmed | Crescimento, fotossintese e eficiencia do uso de nitrogenio em milho, feijao e mandioca submetidos a dois niveis de N no solo |
| title_short | Crescimento, fotossintese e eficiencia do uso de nitrogenio em milho, feijao e mandioca submetidos a dois niveis de N no solo |
| title_sort | crescimento fotossintese e eficiencia do uso de nitrogenio em milho feijao e mandioca submetidos a dois niveis de n no solo |
| topic | manihot esculenta soil fertility nutrient uptake leaves leaf area dry matter photosynthesis composition cultivation plant anatomy plant physiological process plant physiology soil requirements starch crops fertilidad del suelo absorcion de nutrimentos hojas area foliar materia seca fotosintesis |
| url | https://hdl.handle.net/10568/88594 |
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