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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
04/10/1995 |
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Data da última atualização: |
04/10/1995 |
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Autoria: |
MALAVOLTA, E.; GRANER, E. A.; COURY, T.; BRASIL SOBR, M. O. C.; PACHECO, J. A. C. |
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Afiliação: |
Escola Superior de Agricultura "Luiz de Queiroz", University of Sao Paulo, Piracicaba, Sao Paulo, Brazil. |
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Título: |
Studies on the mineral nutrition of cassava (Manihot utilissima pohl). |
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Ano de publicação: |
1952 |
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Fonte/Imprenta: |
Plant Physiology, v.30, n.1, p.81-82, 1952. |
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Idioma: |
Inglês |
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Conteúdo: |
This paper relates the results of a sand culture experiment designed to study the physiological basis for the nutrition of cassava (Manihot utilisima pohl). Chemical analyses of the roots were run to determine the effects of the mineral nutrients, N, P, and K on the composition of the roots. The following conclusions were drawn: 1. Phosphorus and N, under the experimental conditions, proved to be the most important nutrients for cassava. Where P was omited from the fertilizers, the poorest yields were obtained and the reduction in the starech content paralleled the fall in root weight. Treatment NPK produced 32% of starech whereas NPK gave 25%. 2. Where K was omitted from the nutrients, the weight of shoots inereased while that of roots dropped. |
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Palavras-Chave: |
Manihot esculeta. |
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Thesagro: |
Análise Estatística; Análise Química. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01325naa a2200205 a 4500
001 1647284
005 1995-10-04
008 1952 bl --- 0-- u #d
100 1 $aMALAVOLTA, E.
245 $aStudies on the mineral nutrition of cassava (Manihot utilissima pohl).
260 $c1952
520 $aThis paper relates the results of a sand culture experiment designed to study the physiological basis for the nutrition of cassava (Manihot utilisima pohl). Chemical analyses of the roots were run to determine the effects of the mineral nutrients, N, P, and K on the composition of the roots. The following conclusions were drawn: 1. Phosphorus and N, under the experimental conditions, proved to be the most important nutrients for cassava. Where P was omited from the fertilizers, the poorest yields were obtained and the reduction in the starech content paralleled the fall in root weight. Treatment NPK produced 32% of starech whereas NPK gave 25%. 2. Where K was omitted from the nutrients, the weight of shoots inereased while that of roots dropped.
650 $aAnálise Estatística
650 $aAnálise Química
653 $aManihot esculeta
700 1 $aGRANER, E. A.
700 1 $aCOURY, T.
700 1 $aBRASIL SOBR, M. O. C.
700 1 $aPACHECO, J. A. C.
773 $tPlant Physiology$gv.30, n.1, p.81-82, 1952.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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