Resumos
O efeito da adubaçao NPK e da matéria orgânica na composição mineral do grão e na qualidade da bebida (prova de xícara) foi estudado. Verificou-se que a adubação fosfatada e o uso da matéria orgânica não influiram nas características mencionadas. A adubação nitrogenada e potássica aumentou o teor dos elementos correspondentes no grão e prejudicou pouco mas, significativamente a qualidade da bebida. Esses dados devem ser encarados com cautela e tidos apenas como preliminares.
In this second year of work, research was carried out concerning, the effect of N, P, K and organic fertilization on the mineral composition of the coffee bean and in the quality of the beverage. The material employed was obtained from a NxPxK, 2³ , factorial experiment with split plot (with and without organic matter). The test area is located in poor, deep and, sandy soil; Coffea Arabica L., Var. "Bourbon Vermelho" is the plant source. The main findings are as follows: a) N content in the bean was raised by the application of N in the soil. The use of K increases the level of K in the bean. The level of total P and soluble P was not affected by P fertilization. No treatment affected the S level in the bean. The level of the elements analysed was not affected significantly by the organic matter applied to the soil. b) Fruits collected in treatments where N and K were used gave significantly lower quality beverage. The quality of beverage wasn't affected by the organic matter. c) It was found a negative and significant (1%) correlation between N level in the bean and quality of beverage (r = -0,642). For K the correlation was found to be r - -0,449, significant at 10% of probability. No similar correlation was found with respect to P.
Estudos sôbre a alimentação mineral do cafeeiro. XXI. efeito da adubação N, P, K e orgânica na composição mineral do grão e na qualidade da bebida. (2a. Nota)* * Realizado com auxílio do IBC, CNPq e Fundação Rockefeller. Agradecimentos a C. Godoy Jr., M.O.C. Brasil Sobrº., Vivaldo F. Cruz e Acad. D.A. Banzatto da ESALQ; A. Teixeira e L.S.P. Pereira da Secret. de Agricultura; à equipe de degustação do IBC de S. Paulo.
H.V. de Amorim L.C. ScotonII; A. de CastilhoIII; F. Pimentel GomesIV; E. MalavoltaV
IBolsista do CNPq
IIBolsista da FAPESP
IIISecretaria de Agricultura do E. S. Paulo
IVCadeira de Matemática e Estatística da ESALQ
VCadeira de Química Biológica da ESALQ
RESUMO
O efeito da adubaçao NPK e da matéria orgânica na composição mineral do grão e na qualidade da bebida (prova de xícara) foi estudado.
Verificou-se que a adubação fosfatada e o uso da matéria orgânica não influiram nas características mencionadas.
A adubação nitrogenada e potássica aumentou o teor dos elementos correspondentes no grão e prejudicou pouco mas, significativamente a qualidade da bebida.
Esses dados devem ser encarados com cautela e tidos apenas como preliminares.
SUMMARY
In this second year of work, research was carried out concerning, the effect of N, P, K and organic fertilization on the mineral composition of the coffee bean and in the quality of the beverage.
The material employed was obtained from a NxPxK, 23 , factorial experiment with split plot (with and without organic matter). The test area is located in poor, deep and, sandy soil; Coffea Arabica L., Var. "Bourbon Vermelho" is the plant source.
The main findings are as follows:
a) N content in the bean was raised by the application of N in the soil. The use of K increases the level of K in the bean. The level of total P and soluble P was not affected by P fertilization. No treatment affected the S level in the bean. The level of the elements analysed was not affected significantly by the organic matter applied to the soil.
b) Fruits collected in treatments where N and K were used gave significantly lower quality beverage. The quality of beverage wasn't affected by the organic matter.
c) It was found a negative and significant (1%) correlation between N level in the bean and quality of beverage (r = -0,642). For K the correlation was found to be r - -0,449, significant at 10% of probability. No similar correlation was found with respect to P.
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LITERATURA CITADA
LAZZARINI, W. 1965 Comunicação Pessoal.
Recebido p/ publicação em 16/10/67.
- ALBERSHEIM, P. 1965a The Substructure and Function of the cell wall. In "Plant Biochemistry". Ed. J. Bonner and J.E. Warmer. Academic Press, N.Y.- London, 151-186.
- ALBERSHEIM, P. 1965b Biogenisis of the cell wall. In "Plant Biochemistry". Ed. Bonner and J.E. Warmer. Academic Press, N.Y.- London 298-319.
- AMORIM, H.V. de, L.C. Scoton, A. de Castilho, F. Pimentel Gomes, E. Malavolta. 1965 Estudos sobre a alimentação mineral do cafeeiro XVII. Efeito da adubação NPK na composição química do solo, do fruto e na qualidade da bebida (nota preliminar). Anais E.S.A. "Luiz de Queiroz". 22: 139-152.
- ARENS, K. 1958 Considerações sôbre as causas do xeromorfismo foliar. Boletim da Faculdade de Filosofia, Ciências e Letras da U.S.P. nş 224. Botânica nş 15: 25-56.
- BLORE, T.W.D. 1965 Some agronomic practices affecting the quality of Kenya coffee. Turrialba, 15: 111-118.
- DUBLIN, P. 1963 Le cofeier excelsa en Republique Centrofricaine. Etude de la graine. Cafe, Cacao, Thè, 76-21.
- FAIRBANKS BARBOSA, L., F. Pimentel Gomes, P. Parreira, A. de Castilho, H. de Campos, A.A. Teixeira. 1962 Estudos Preliminares sôbre a Prova de Xícara do Café. Secretaria da Agricultura do Estado de São Paulo. SFCC, 1, 38 pp.
- GIALLULY, M. 1958 Factors affecting the inherent quality of green coffee. Coffee and Tea Industries, 81: 127-132.
- GRANER, E.A, & C. GODOY JR. 1964 Adubação de Café. VII. Produção, rendimento e qualidade da bebida no segundo ano de colheita (1961). Revista de Agricultura. Piracicaba 39: 61-67.
- JONES, P.A. 1964 Research into problems of coffee quality in Kenya. Turrialba, 14: 182-187.
- KRUG, H.P. 1945 Concepção moderna sobre a origem dos cafés duros. Revista de Agricultura. Piracicaba, 20:416-426.
- LENTNER, C. e F.E. DEATHERAGE, 1959 Organic acids in coffee in relation to the degree of roast. Food Research. 24: 483-492.
- MALAVOLTA, E. 1951 Praticas de Química Orgânica e Biológica. Centro Acadêmico "Luiz de Queiroz". Piracicaba.
- MALAVOLTA, E., F. Pimentel Gomes, T. Coury. 1958 Estudos sôbre a alimentação mineral do cafeeiro. (Coffea arabica L., Var. Bourbon Vermelho). E.S.A. "Luiz de Queiroz". Boletim 14, 16 pp.
- NORTHMORE, J.M. 1965 Some factors affecting the quality of Kenya coffee. Turrialba 15:184-193.
- PIMENTEL GOMES, F. 1966 Curso de Estatística Experimental, 3a edição. Piracicaba, São Paulo. 404 pp + 15 tabelas.
- ROBINSON, J.B.D. 1960 Amber beans. Kenya Coffee, 25: 91-93.
- SIVETZ, M. 1963 Physiological and Psycological Effects of Coffee. In "Coffee Processing Tecnology". Tge Avi Company, Inc. Westport, Connecticut, 2, 113 pp.
- SMITH, R.F. 1963 Les acides chlorogéniques du café. Cafe, Cacao, The, 7: 245-252.
- SPENCER, M. 1965 Fruit Ripening. In "Plant Biochemistry". Ed. J. Bonner and J.E. Warmer. Academic Press N.Y.-London, 793-825.
- UNDERWOOD, G.E., F.E. DEATHERAGE. 1952a Nitrogen compounds of Coffee. Food Research. 17: 419-424.
- UNDERWOOD, G.E., F.E. DEATHERAGE. 1952b A study of the aminoacids of green and roasted coffee including a new method of protein hydrolysis. Food Research 17:425-432.
- URITANI, I., T. Akazana, M. Uritani. 1954 Increase of respiratory-rate in sweet potato tissue infected with black-rot. Nature 174: 1060.
- WALLIS, J.A.N. 1965 Arabica Coffee Management in Kenya. First Session Technical Working Party on Coffee Production and Protections. F.A.O. Brazil. Working paper Ce/ 65/16.
Datas de Publicação
-
Publicação nesta coleção
13 Jun 2012 -
Data do Fascículo
1967