The main difference from industrialized farms is that organic farms use substitutes for each kind of chemical input, such as compost instead of chemical fertilizer or organic substances from plants to ward off insect pests. (The biggest challenge is how to control weed infestation without the use of herbicides.) Nonetheless, standing amidst hundreds of acres planted with nothing but broccoli or lettuce, these organic farms vary little in appearance from industrialized farms.
站在數百公頃的綠花椰菜田、一望無際的萵苣田中，有機農場外觀和傳統工業化農場並無二致，不同的是傳統農場的每一種化學用品，有機田都有另一種替代品──如以堆肥取代化肥，以植物有機物質做害蟲防治，較大的挑戰則是如何不用藥劑來控制雜草生長。