| Registro completo |
| Provedor de dados: |
Anais da ESALQ
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| País: |
Brazil
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| Título: |
Efeitos de diferentes níveis de N, P e K sôbre cacaueiros jovens (Theorema cacao L.) em solução nutritiva
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| Autores: |
Amorim,Henrique Vianna de
Scoton,Luiz Carlos
Haag,H.P.
Malavolta,E.
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| Data: |
1964-01-01
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| Ano: |
1964
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| Resumo: |
Cocoa seedlings were grown in nutrient solution in order to find out the effects of the levels of N, P, K in the substrate on growth, symptoms and chemical composition of the leaves. A 3x3x3 factorial design was used. The following conclusions can be drawn. 5.1. Among the three elements under study, only nitrogen had a positive, significant effect on growth as measured by height and dry weight. 5.2. The level of a given elements in the leaves did increase when its level in the nutrient solution was raised. On the other hand the N content was positively affected by the concentration of P in the substrate. 5.3. A decrease in the N/P and K/P rations in the leaves was observed when the nutrient solutions had, res-respectively, absence of K and N and high level both of K and N. The N/K ratio increased with the level of P in the substrate. 5.4 A highly significant positive correlation was found between N content in the leaves and dry weight. This was not the case however, insofar P and K are considered - no correlation whatsoever was observed.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Português
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0071-12761964000100015
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| Editor: |
Universidade de São Paulo
Escola Superior de Agricultura
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| Relação: |
10.1590/S0071-12761964000100015
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| Formato: |
text/html
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| Fonte: |
Anais da Escola Superior de Agricultura Luiz de Queiroz v.21 1964
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| Direitos: |
info:eu-repo/semantics/openAccess
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