CONSERVAÇÃO PRODUTIVA DO SISTEMA AGROFLORESTAL CABRUCA, PROJETO BARRO PRETO: contribuições ao manejo do sombreamento do cacaueiro

• DOI: 10.22533/at.ed.9412316106

• Palavras-chave: Mata Atlântica, árvore nativa, sustentabilidade, cacauicultura, cacau cabruca.

• Keywords: Atlantic Forest, native tree, sustainability, cocoa culture, cabruca cocoa.

• Abstract: The high percentage of Atlantic Forest remnants in the Cacao Region of Bahia is attributed to the cocoa cabruca agroforestry system. The cacao region still now is in financial crisis, jeopardizing the conserved ecosystem assets and services. The recovery of cacao farming in the south of Bahia relates directly to the management of the cacao tree and the management of its shading is a determining factor. With the objective of subsidizing the shading management regarding the diversity of tree species from the point of view of productive conservation, phytosociological and arboreal biometrics parameters were used to evaluate the structure and interferences in the overgrowth, in an area of ​​cacao cabruca with 1, 4 ha, at Bela Cruz farm, Municipality of Barro Preto, Bahia, Brazil. In the pre-management period, 30 tree species were inventoried, distributed in 20 families, with basal area (AB) of 17.15 m 2 /ha, commercial volume (Vc) of 128.14 m 3 /ha, Margalef Index (MDg) equal to 6.33 and The Jentsch Mixing Coefficient (QM) to 1:3.23; after thinning and planting (post-management), 49 tree species remained, distributed in 18 families, with AB = 16.09 m 2 /ha, Vc = 112.05 m 3 /ha, DMg = 7 ,03 and QM = 1:3.48,. The results, based on current legislation, allow us to conclude that the area under study is a Cabruca Agroforestry System that can be legally and technically managed; the interference provided environmental gains without any loss in species diversity; based on the precepts of productive conservation, there was assertiveness in the proposal to adapt the shading, with an increase in Wealth and Deiversity. The Jentsch Mixing Coefficient (QM), the Margalef (DMg) and Brillouin (HB) indices have adequate characteristics and contribute satisfactorily to decision-making in the management of cabruca cocoa shading.