Edwards and Burrows (1988 ) and Arancon and Edwards (2004) reported that vermicomposts, especially those produced from animal waste manures, usually contained greater quantities of mineral elements than commercial plant growth media, and many of these elements were in forms that could be taken up more readily by the plants, such as nitrates, exchangeable P, and soluble K, Ca, and Mg. Orozco et al. (1996) reported that vermicomposting of coffee pulp increased the availability of nutrients such as P, C, and Mg. Werner and Cuevas (1996) reported that most vermicomposts contained adequate amounts of macronutrients, micronutrients, and trace elements of various kinds, but amounts inevitably depended on the type of the parent earthworm feedstock.