Efeitos do sistema de implantação do cacaueiro nas propriedades químicas de solos da Amazônia Brasileira
The effect of cocoa intercropped with different shadding species on the chemical properties of Brazilian amazon soils was evaluated in two experiments located in the north of Mato Grosso State and in the transamazonian highway (Para State). The cocoa plantations used were established in "terra roxa estruturada" and red yellow podzolic soils under thinned forest, secondary regrowth or intercropped with food crops, oil crops and forest trees after the slash and burn of the natural vegetation. Ashes of the burn increased pH (alpha minor 0.05) exchangeable bases (Ca + Mg and K) soil available phosphorus, and also reduced active aluminum to non toxic levels in the red yellow podzolic soil. There were no significant improvements in the organic carbon levels up to twelve months after the forest burning. The follow up of the experiment showed that shading of cocoa with banana (Musa spp.), castor bean (Ricinus communis L.), pigeon pea (Cajanus cajan (L.) Millsp.) and faveira-paricá (Schizolobium amazonicum (Huber) exducke) lengthened these effects
| Main Authors: | , |
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| Format: | biblioteca |
| Language: | por |
| Published: |
(Brasil): Sociedade Brasileira de Ciência do Solo,
1986
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| Subjects: | THEOBROMA CACAO, MUSA, CAJANUS CAJAN, RICINUS COMMUNIS, CULTIVO INTERCALADO, SUELO, PROPIEDADES FISICO - QUIMICAS SUELO, AMAZONIA, BRASIL, |
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