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| 135192121 | organic agriculture | approach to farming and ranching that avoids the use of herbicides, pesticides, growth hormones, and other similar synthetic inputs | |
| 135192122 | agriculture | the purposeful tending of crops and livestock in order to produce food and fiber | |
| 135192123 | primary economic activity | economic activity concerned with the direct extraction of natural resources from the environment-such as mining, fishing, lumbering, and especially agriculture | |
| 135192124 | secondary economic activity | economic activity involving the processing of raw materials and their transformation into finished industrial products; the manufacturing sector | |
| 135192125 | tertiary economic activity | economic activity associated with the provision of services-such as transportation, banking, retailing, education, and routine office-based jobs | |
| 135192126 | quaternary economic activity | service sector industries concerned with the collection, processing, and manipulation of information and capital. Examples include finance, administration, insurance, and legal services. | |
| 135192127 | plant domestication | genetic modification of a plant that its reproductive success depends on human intervention. | |
| 135192128 | root crops | crop that is reproduced by a cultivating the roots of or the cuttings from the plants. | |
| 135192129 | seed crops | crop that is reproduced by cultivating the seeds of the plants | |
| 135192130 | First agricultural revolution | dating back 10,000 years, it achieved plant domestication and animal domestication | |
| 135192131 | animal domestication | genetic modification of an animal such that it is rendered more amenable to human control | |
| 135192132 | subsistence agriculture | self-sufficient agriculture that is small scale and low technology and emphasizes food production for the local consumption, not for trade; making just enough food for the family and or friends | |
| 135192133 | shifting cultivation | cultivation of crops in tropical forest clearings in which the forest vegetation has been removed by cutting and burning. These clearings are usually abandoned after a few years in favor of newly cleared forestland. | |
| 135192134 | slash-and-burn agriculture | cultivation of crops in tropical forest clearings in which the forest vegetation has been removed by cutting and burning. These clearings are usually abandoned after a few years in favor of newly cleared forestland. | |
| 135192135 | Second Agricultural Revolution | dovetailing with and benefiting from the industrial revolution, it witnessed improved methods of cultivation, harvesting and storage of farm produce. | |
| 135192136 | von Thünen model | a model that explains the location of agricultural activities in a commercial, profit-making economy. A process of spatial competition allocates various farming activities into rings around a central market city, with profit-earning capability that determining the force in how far a crop locates from the market. | |
| 135192137 | Third Agricultural Revolution | currently in the progress, it has as its principal orientation the development of genetically modified organisms | |
| 135192138 | Green Revolution | the recently successful development of higher yield, fast-growing varieties of rice and other cereals in certain developing countries, which led to the increased production per unit area and a dramatic narrowing of the gap between population growth and the food needs. | |
| 135192139 | genetically modified organisms | crops that carry new traits that have been inserted through advanced genetic engineering methods | |
| 135192140 | rectangular survey system | also called the public land survey, the system was used by the US land Office survey to parcel land west of the Appalachian Mountains. The system divides land into a series of rectangular parcels. | |
| 135192141 | township and range system | a rectangular land division scheme designed by Thomas Jefferson to disperse settlers evenly across farmlands of the U.S. interior. | |
| 135192142 | metes and bounds system | a system of land surveying east of the Appalachian Mountains. It is a system that relies on descriptions of land ownership and natural features such as streams of trees. Because of the imprecise nature of metes and bounds surveying, the U.S. Land Office Survey abandoned the technique in favor of the rectangular survey system. | |
| 135192143 | longlot survey system | distinct regional approach to land surveying found in the Canadian Maritimes, parts of Quebec, Louisiana, and Texas whereby land is divided into narrow parcels stretching back from rivers, roads or canals | |
| 135192144 | primogeniture | system which the eldest son in a family-or, in exceptional cases, daughter-inherits all of a dying parent's land | |
| 135192145 | commercial agriculture | term used to describe large scale farming and ranching operations that employ vast land bases, large mechanized equipment, factory-type labor forces, and the latest technology | |
| 135192146 | monoculture | dependence on a single agricultural commodity | |
| 135192147 | Köppen climatic classification system | developed by Wladimir Köppen, a system for classifying the world's climates on the basis of temperature and precipitation | |
| 135192148 | climatic regions | areas of the world with similar climatic characteristics | |
| 135192149 | plantation agriculture | production system based on a large estate owned by an individual, family, or corporation and organized to produce a cash crop. Almost all plantations were established within the tropics; in recent decades, many have been divided into smaller holdings or reorganized as cooperatives | |
| 135192150 | luxury crops | non-subsistence crops such as tea, cacao, coffee, and tobacco | |
| 135192151 | livestock ranching | the raising of domesticated animals for the production of meat and other byproducts such as leather and wool | |
| 135192152 | Mediterranean agriculture | specialized farming that occurs only in areas where the dry-summer Mediterranean climate prevails | |
| 135192153 | agribusiness | general term for the businesses that provide the vast array of goods and services that support the agriculture industry | |
| 135192154 | quinary economic activity | service sector industries that require a high level of specialized knowledge or technical skill. Examples include scientific research and high-level management |
