In inorganic or conventional farming, chemical fertilizers promote plant growth. Insecticides are sprayed to reduce pests and diseases. Chemical herbicides are used to manage weeds. Antibiotics, growth hormones and medications are given to animals to prevent diseases.
In organic farming, natural fertilizers such as manure or compost are used to feed soil and plants. Crop rotation, tilling, hand weeding or mulching is done to manage weeds. Insects and birds are used to reduce pests and disease. Animals are given organic feed and allowed access to the outdoors. Preventive methods such as rotational grazing help to minimize diseases.