Shade tree effects in an 8-year-old cocoa agroforestry system: biomass and nutrient diagnosis of Theobroma cacao by vector analysis

By M. Isaac, V. Timmer, S. Quashie-Sam. Nutrient Cycling in Agroecosystems, 2007

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Ecophysiology of the cacao tree (2007, methodology): “Specifically in regions with low access to inorganic fertilizers, the multistrata plantation is used to maintain soil fertility with the subsequent increase in nutrient availability for cacao (Isaac et al., 2007).”
Multifunctional shade‐tree management in tropical agroforestry landscapes – a review (2011, background): “Enhanced vegetative growth under shade trees has also been observed in cacao stands inGhana (Isaac et al. 2007b).”
Secondary plants used in biological control: A review (2012, background): “Cocoa plantations are often intercropped with companion plants such as food, tree or medicinal crops, for example plantain, cassava, oil palm, coffee and citrus (Oladokun 1990; Isaac et al. 2007).”
Productivity of Theobroma cacao agroforestry systems with timber or legume service shade trees (2011, background): “Sometimes a few highly valued timber species (for instance, Swietenia spp. or Cedrela odorata) are purposely planted to provide both shade to the cocoa and timber for the household (Chalmers 1971; Isaac et al. 2007; Lim 1978; Melo 1999; Méndez 1999; Orozco et al. 2008; Sanchez et al. 2002).”