Interacción sombra fertilizantes en cacaotales de Bahía
Results of fertilizer and shade experiments in Bahian cacao are presented in this paper. The four treatments for the experiment, in a randomized block design, were (a) shade with no fertilizer (control); (b) shade with fertilizer; (c) no shade with no fertilizer and (d) no shade with fertilizer. The quantity of fertilizer applied per hectare was 105 kg N, 416 kg P2O5 64 kg K2O, 34 kg MgO and 45.7 kg CaO. Removal of shade always resulted in a higher yield than for the plots with shade. However, yield throughout the year varied considerably. In the experiment receiving annual fertilizer applications as well as in the other where manuring had been discontinued after the third year the best yields were obtained in the plots where manuring was associated with the removal of shade. Fertilizer increased yield in the shaded plots but this increase was small and less than in the unmanured plots where the shade had been removed. The residual effect of the fertilizers, the incidence of Black pod disease (Phytophthora palmivora) and the annual yield variations for the whole seven year period are also discussed in this paper
| Main Authors: | , , , , , , , |
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| Format: | biblioteca |
| Language: | spa |
| Published: |
St. Augustine (Trinidad y Tobago): COPAL,
1972
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| Subjects: | THEOBROMA CACAO, SOMBRA, ABONOS, RENDIMIENTO, CULTIVO, ENFERMEDADES FUNGOSAS, PHYTOPHTHORA PALMIVORA, FECUNDACION, BAHIA, BRASIL, |
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| Summary: | Results of fertilizer and shade experiments in Bahian cacao are presented in this paper. The four treatments for the experiment, in a randomized block design, were (a) shade with no fertilizer (control); (b) shade with fertilizer; (c) no shade with no fertilizer and (d) no shade with fertilizer. The quantity of fertilizer applied per hectare was 105 kg N, 416 kg P2O5 64 kg K2O, 34 kg MgO and 45.7 kg CaO. Removal of shade always resulted in a higher yield than for the plots with shade. However, yield throughout the year varied considerably. In the experiment receiving annual fertilizer applications as well as in the other where manuring had been discontinued after the third year the best yields were obtained in the plots where manuring was associated with the removal of shade. Fertilizer increased yield in the shaded plots but this increase was small and less than in the unmanured plots where the shade had been removed. The residual effect of the fertilizers, the incidence of Black pod disease (Phytophthora palmivora) and the annual yield variations for the whole seven year period are also discussed in this paper |
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