1) Shifting Cultivation (rotating crops)
2) Intensive Pastoral Farming (focused on grazing animals)
3) Subsistence Cultivation (eeking out a living, often on inhospitable land)
4) Commercial Cultivation (usually focused on cash crops, such as cotton, palm oil - and poppy for heroine)
5) Mixed crop Cultivation
6) Dairy Farming (primarily cows for milk and chickens for eggs)
7) Dry Farming (a growing area is modern Genetically Modified seeds that require less water than normal crops)
8) Intensive Arable Farming (crop growing, often staples such as maize, wheat or corn)
9) Market Gardening (growing fruit and salad vegetables).
10) Silk Farming (cultivating silk worms)
11) Plantation or Tree Farming (long term development of timber)
12) Extensive Pastoral Farming (eg Hill Sheep Farming)
You could argue that fish farming should be in the list, but that is generally considered to be a separate category.
The two categories of agriculture, that have come about as our understanding of man's impact on the environment grows, are:
Conventional agriculture most commonly practiced in the United States, and usually involves the following criteria:
Sustainable Agriculture uses ecological principles to farm, and involves: