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Shaded coffee V: results of two biennial cyclos 1967/1968 - 1970/71

This paper deals with data obtained in 1967, 1968, 1970 and 1971 in shaded and unshaded coffee plots at Piracicaba, São Paulo, Brazil. The results can be summarized as follows : a. the production, in shaded and unshaded plots, show differences statisticaly significant; the productions in shaded plots was now higher, due to the destruction of the shade trees and acumulation of organic substract; b. the percentage of cofee berry borer infestation was higher in shaded plots as compared with unshaded ones; c. the percentage of green, ripened and dry fruits depends on the year and on the harvest time.


Universidade de São Paulo, Escola Superior de Agricultura Av.Páduas Dias, 11, C.P 9 / Piracicaba - São Paulo, Brasil, tel. (019)3429-4486, (019)3429-4401 - Piracicaba - SP - Brazil
E-mail: scientia@esalq.usp.br