Organic agriculture can be defined as "an integrated farming system that strives for sustainability, the enhancement of soil fertility and biological diversity while, with rare exceptions, prohibiting synthetic pesticides, antibiotics, synthetic fertilizers, genetically modified organisms, and growth hormones".Organic farming can be beneficial on biodiversity and environmental protection at local level. However, because organic farming has lower yields compared to conventional farming, additional agricultural land is needed elsewhere in the world, which means that natural land has to be converted into agricultural land.