In 1930, things were slightly different. We started using machines, and we had a lot of tools which helped us in farming more efficiently. At that time, one farmer could feed only himself and three other consumers. Not that much, isn't it? Nowadays, though, things have changed a lot. Now, the same farmer now feeds well over a hundred people. There are a lot of techniques that farmers use in modern farming. The most common 'system' that we use nowadays, is the Organic Farming.