Resumo
The uptake of potassium fertilizers, namely, KC1, K2S04 and KN03, by beans and coffee leaves was studied in the experiment described herein. The fertilizers were applied as leaf sprays at the rates of 2,25, 4,50 and 9,00 grams, of K20/tree split in 3 applications which were made every week; the proper amount of salts were dissolved in 1 liter of water with wetting agent. Fifteen days after the last application both beans and leaves were sampled for analysis. No leaf injury resulted from the potassium sprays. Leaf -K and bean -K was significantly raised as consequence of the foliar applications of the K- bearing salts.
Pulverização foliar em cafeeiro (Coffea arabica L.) II - Aplicação de adubos potássicos* * Êste trabalho foi realizado com o auxílio do Instituto Brasileiro do Café (IBC).
L. Neptune Menard; Otto J. Crocomo; F. Pimentel Gomes; Humberto de Campos
E. S. A. "Luiz de Queiroz"
SUMMARY
The uptake of potassium fertilizers, namely, KC1, K2S04 and KN03, by beans and coffee leaves was studied in the experiment described herein. The fertilizers were applied as leaf sprays at the rates of 2,25, 4,50 and 9,00 grams, of K20/tree split in 3 applications which were made every week; the proper amount of salts were dissolved in 1 liter of water with wetting agent. Fifteen days after the last application both beans and leaves were sampled for analysis. No leaf injury resulted from the potassium sprays. Leaf -K and bean -K was significantly raised as consequence of the foliar applications of the K- bearing salts.
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LITERATURA CITADA
Recebido para publicação em 28/10/1961.
- 1. CROCOMO, O. J. e NEPTUNE MENARD, L. 1961. Estudo sôbre a distribuição do S35 em cafeeiro (Coffea arabica L.), Anais E. S. A. "Luiz de Queiroz" (Em impressão).
- 2. MALAVOLTA, E. ARZOLLA, J. D. P., HAAG, H. P., COURY, T. e CROCOMO, O. J. 1957. Nota sôbre a aplicação de uréia em pulverização no cafeeiro. Rev. Agric, 32(4): 223-226.
- 3. PIMENTEL GOMES, F. - 1960 - Curso de Estatística Experimental, Piracicaba.
Datas de Publicação
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Publicação nesta coleção
10 Set 2012 -
Data do Fascículo
1961
Histórico
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Recebido
28 Out 1961
