“…Biofertilizer produced with organic matter (earthworm compost) has been shown to increase the availability of nutrients in various crops, especially phosphorus, potassium, calcium, magnesium, and sulfur (Lima, Stamford, Santos, Lira Junior, & Dias, 2007;Stamford, Lima, Santos, & Dias, 2006;Stamford, Izquierdo, Fernández, & Moreno, 2008;Stamford et al, 2011). Nitrogen is also present in organic matter, although not in quantities that promote adequate nutrition and plant yield similar to an application of soluble fertilizer (Lima et al, 2010).…”