Organic agriculture is the environmentally friendly response to traditional agriculture. Here, the treatments used are made from natural ingredients, and the use of petrochemicals is forbidden. Working the land to combat weeds allows for a good assessment of the topsoil and subsoil.
Traditional agriculture, the most practised form of agriculture around the world, became commonplace following the two world wars, as it was during that era that knowledge about chemistry greatly increased. Traditional agriculture is based on treating the soil and plants with products that are more likely than not noxious, and more likely than not synthetically produced in a laboratory. These products are used to prevent disease or pests from blighting the plant.