“White Gold,” or seabird guano fertilizer, is found to have boosted agricultural systems in the pre-Inca civilizations of South America who inhabited Chile’s hellish Atacama Desert. Seabird and bat guano (excrement) is a prized source of N-P-K, (Nitrogen, Phosphorus and Potassium) and those gardeners among you will know that these three chemicals are essential in a […]