Êste trabalho é o primeiro de uma série para o levantamento da situação geral de nutrição dos cafèzais nos principais tipos de solo do Estado de São Paulo. Foram colhidas amostras de folhas para análise em 107 cafèzais de 20 municípios, compreendendo as variedades Mundo Novo, Bourbon e Caturra, entre 5 e 10 anos de idade. Nas amostras foram determinados 12 elementos essenciais, e os resultados comparados com os níveis limiares conhecidos. As análises para determinação de N, B, Zn, Fe e Mg confirmaram os sintomas de deficiência observados no campo. Os resultados indicam que, para melhorar a produção nesse tipo de solo, deve ser dada atenção ao nitrogênio e boro.

This survey represents the first part of a program for the evaluation of the general nutritional level of coffee fields in main soil groups of the State of São Paulo and it reports the data concerning the massapê-salmourão area of soil (ortho red-yellow podzolic soils, ortho red-yellow latosol and gravelly podzolized soils). A total of 107 leaf samples was taken for analyses in three seasons during 1964: summer (January-February, when the coffee fruit is developing); autumn (April-May, during fruit ripening), and in the spring (September-October, when flowering occurs). The sampling was made in 20 different counties in 5 to 10 years old coffee fields of "Mundo Novo", "Bourbon" or "Caturra" varieties. Analyses were performed for 12 elements. The results obtained were then compared with the threshold level and frequency distribution curve, previously obtained in a general survey of coffee plantations under a wide range of conditions in the State. Leaf analyses of N, B, Zn, Mg, and Fe confirmed the deficiency symptoms observed in the field. Some differences in potassium, manganese and molybdenum content of the leaves from different varieties were found. The percentage of deficient coffee fields changes with the sampling season for most elements. Fluctuations must be taken into account for the foliar diagnoses. The results of this study indicate that for the improvement of the coffee production in these soils, attention should be given to nitrogen and boron.

Lâminas de pinho-do-paraná (Araucaria angustifolia Bert), comumente empregadas como recipientes para mudas de café, foram submetidas a tratamento com preservativos diversos. Utilizaram-se, em várias concentrações: sulfato de cobre, mistura cromo-arseno-fluo-fenólica, creosôto e óleo usado de motores. A eficiência dos preservativos foi, em ordem decrescente: creosôto, mistura de creosôto e óleo usado de motores, respectivamente nas proporções 20:80 e 50:50, óleo usado de motores, sulfato de cobre a 3%, mistura cromo-arseno-fluo-fenólica e sulfato de cobre a 1,5%. Não foi observado qualquer efeito tóxico das substâncias preservadoras, sôbre as mudas de café.

The establishment of coffee plantations in São Paulo is being done by planting one or several coffee seedlings per hole. The seedlings used are generally grown in special recipients made of thin sheets of pine wood. Due to the long time that the seedlings remain in the nursery before they are transplanted to the field, the recipient preservation against rotting becomes necessary. In the present paper the influence of the following chemical compounds on the recipient preservation was discussed: creosote, creosote and burned oil, copper sulphate at 3 per cent, chromo-arsene-fluo-phenolic at 2 per cent and copper sulphate at 1.5 per cent. Polyethylene bags were also used for seedling growth comparison. Fourteen months after the seedling transplantation the recipients were examined in order to evaluate their decaying state. Creosote and burned oil isolatedly or in their mixture gave the best results. The height and weight of the aerial part of the seedlings were not influenced by the chemicals used in the wood recipient preservation (Table 1). Taller and heavier seedlings were obtained using polyethylene bags (Table 2).