Resumo
This paper deals with the determination of the content of macronutrients in pulp and beans of three coffee varieties, namely 'Mundo Novo', 'Caturra Amarelo' and 'Bourbon Amarelo'. Samples were collected in plantations located in the three types of soils herein most of S. Paulo, Brazil, coffee is grown, that is, "terra roxa legítima" (Ribeirão Preto), "massapé-salmourão" (Mocóca), and "arenito de Bauru" (Pindorama). The following main conclusions were drawn after statistical analysis of data obtained hereby. There is no statistical difference among the three varieties . Average contents of macronutrients, as per cent of the dry matter, are the following: N P K Ca Mg S bean 1,71 0,10 1,53 0,27 0,15 0,12 pulps 1.78 0,14 3,75 0,41 0,13 0,15 Samples collected in Mocóca ("massapé-salmourão") had lower N and K contents, probably due to lack of availability of these elements in the soil, as suggested by its analysis. Results obtained in this work are in good agreement with data described elsewhere. Out of the total of elements contained in the whole fruit the following proportions are exported as clean coffee: N - 2/3, P and K - 1/2, Ca, Mg and S - 1/3. It is clear therefore that a substantial amount of elements absorbed from the soil remains in the pulp or in the dry hulls which result from processing. From this fact raises the interest of using these residues as fertilizer in the coffee plantations.
Estudos sôbre a alimentação mineral do cafeeiro, X. Extração de macronutrientes na colheita pelas variedades "Mundo Novo", "Caturra" e "Bourbon Amarelo"* * Trabalho feito com ajuda da Fundação Rockefeller, do Instituto Brasileiro do Café e do Conselho Nac. de Pesquisas.
S. ArzollaI; L. GomesII; J. R. SarrugeI; R. G. AndradeI; E. A. GranerI; E. MalavoltaI
IEscola Superior de Agricultura «Luiz de Queiroz»
IIEstagiária da SUDENE
SUMMARY
This paper deals with the determination of the content of macronutrients in pulp and beans of three coffee varieties, namely 'Mundo Novo', 'Caturra Amarelo' and 'Bourbon Amarelo'. Samples were collected in plantations located in the three types of soils herein most of S. Paulo, Brazil, coffee is grown, that is, "terra roxa legítima" (Ribeirão Preto), "massapé-salmourão" (Mocóca), and "arenito de Bauru" (Pindorama). The following main conclusions were drawn after statistical analysis of data obtained hereby.
There is no statistical difference among the three varieties . Average contents of macronutrients, as per cent of the dry matter, are the following:
N P K Ca Mg S
bean 1,71 0,10 1,53 0,27 0,15 0,12
pulps 1.78 0,14 3,75 0,41 0,13 0,15
Samples collected in Mocóca ("massapé-salmourão") had lower N and K contents, probably due to lack of availability of these elements in the soil, as suggested by its analysis.
Results obtained in this work are in good agreement with data described elsewhere.
Out of the total of elements contained in the whole fruit the following proportions are exported as clean coffee: N - 2/3, P and K - 1/2, Ca, Mg and S - 1/3. It is clear therefore that a substantial amount of elements absorbed from the soil remains in the pulp or in the dry hulls which result from processing. From this fact raises the interest of using these residues as fertilizer in the coffee plantations.
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AGRADECIMENTOS
Agradecimentos são devidos aos colegas das Estações Experimentais de Ribeirão Preto, Mocóca e Pindorama, respectivamente, J. Junqueira Reis, A. Berardinelli e H. Scaranari pelo fornecimento das amostras para análise.
LITERATURA CITADA
- 1. CARVAJAL, C, J. F., 1959 - Estimacion quantitativa de nueve elementos essenciales presentes in una fanega (400 litros) de café en «ceresa». Inform. Anual, STICA (San José): 15-16.
- 2. CATANI, R. A. & F. R. PUPO DE MORAES. 1958 - A composição química do cafeeiro. Rev. de Agric. (Piracicaba) 33: 45-52 (fig. e tab. fora do texto).
- 3. DAFERT, F. W. 1929 - Em «Experiências de adubação e estudos sobre a cultura do cafeeiro», 3.Ş ed., publ. pela Sec. Agr. Indus. Com. Est. S. Paulo.
- 4. LOUÉ, A. 1957 - Em «Studies on the inorganic nutrition of the coffee three in the Ivory Coast», pags. 55-66.
- 5. MALAVOLTA, E. 1958 - La concimazione del caffé in Brazile. Riv. di Agric. Subtrop. e Trop. (Firenze) Ano 52: 610-620.
- 6. MALAVOLTA, E.f H. P. HAAG, F. A. F. MELLO & M .0. C. BRASIL SOBR.ş. 1962 - «On the mineral nutrition of some tropical crops»: no prelo.
- 7. PAIVA NETO, J. E. de, R. A. CATANI. A. KÜPPER, H. P. MEDINA, F. C. VERDADE, M. GUTMANS & A. C. NASCIMENTO. 1951 - Observações gerais sôbre os grandes tipos de solo do Estado de São Paulo. Bragantia 11: 227-253.
- 8. SAMUELS, S. 1957 - Abonos para café. Rev. de Agric. de Puerto Rico. 44: 121-125.
Datas de Publicação
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Publicação nesta coleção
06 Set 2012 -
Data do Fascículo
1963
