Natural selection: A self-sufficient system of farming is increasing yields across Hawaii (By Susan Essoyan - Honolulu Star Advertiser)EXCERPT: Unlike conventional or even organic farming, "natural farming" is a self-sufficient system to raise crops and livestock with resources available on the farm. Rather than applying chemical fertilizers, farmers boost the beneficial microbes that occur naturally in the soil by collecting and culturing them with everyday ingredients such as steamed rice and brown sugar. They also feed their crops with solutions containing minerals and amino acids made from castoff items such as eggshells and fish bones. "What others consider rubbish, we use," Cho told gardeners and farmers at a workshop in Honolulu last month. "Natural farming uses local resources, but you have to give what the plants need, when they need it and in the right amounts."