Respostas a adubacao em algumas unidades de solos da regiao cacaueira da Bahia
The authors analysed 5 years of data from a shade and fertilizer experiment in the cacao region of Bahia. They present the responses found for fertilizers in some of the principal soils occupied with cacao. The soils studied in accord with the new American system are classified as follows: Alfisol (Cepec, Itabuna, Vargito, Nazaré), Inceptsol (Rio Branco), Oxisol (Colonia) and some hydromorphic soils. The application of fertilizers in other cacao producing regions of the world has shown more efficient when used on cacao without shade principally in soils of medium and low fertility. With shade the fertilizers only caused significant responses in the Cepec group. It is believed that the drop in production in 1966 in the controls has contributed favorably to these results. In areas of greater spacing and where there are clearings in the plantation there is the serious problem of weeds. The danger of dihydration may also occur in isolated exposed areas principally in light soils. As more data is needed, total removal of shade trees is not recomended at this time for cacao plantations in Bahia.
| Main Authors: | , , , |
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| Format: | biblioteca |
| Published: |
1971
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| Subjects: | SUELOS DE CACAO, FERTILIDAD DEL SUELO, SOMBRA, FERTILIZANTES, CLASIFICACION DE SUELOS, BAHIA, BRASIL, |
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| Summary: | The authors analysed 5 years of data from a shade and fertilizer experiment in the cacao region of Bahia. They present the responses found for fertilizers in some of the principal soils occupied with cacao. The soils studied in accord with the new American system are classified as follows: Alfisol (Cepec, Itabuna, Vargito, Nazaré), Inceptsol (Rio Branco), Oxisol (Colonia) and some hydromorphic soils. The application of fertilizers in other cacao producing regions of the world has shown more efficient when used on cacao without shade principally in soils of medium and low fertility. With shade the fertilizers only caused significant responses in the Cepec group. It is believed that the drop in production in 1966 in the controls has contributed favorably to these results. In areas of greater spacing and where there are clearings in the plantation there is the serious problem of weeds. The danger of dihydration may also occur in isolated exposed areas principally in light soils. As more data is needed, total removal of shade trees is not recomended at this time for cacao plantations in Bahia. |
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