Energy, Mines and Resources

Agriculture

Yukon Soils and Geography

Soils

Yukon soils are generally deficient in nitrogen and phosphorus. Potassium and sulphur abundance is often dependent on local geology and is difficult to predict. Since 1984 more than half of the soils tested by the Yukon Agriculture Branch have been deficient in potassium. The most common micro-nutrient deficiencies are boron and magnesium. Soils throughout Yukon are low in organic matter, and salinity has been identified as a problem in some localized areas. Permafrost is found throughout Yukon varying from sporadic discontinuous in southern agriculture areas and increasing to extensive discontinuous at the northern extreme of agriculture activity in Yukon.

Geography

Yukon is part of the Canadian cordilleran region characterized by mountainous terrain and the presence of glaciers and icefields in some areas.

Agriculture is limited to the major river valleys including the Yukon, Takhini, Pelly, Stewart and Liard. For the most part, agricultural activity is located on river sediments. In the Takhini and Dezadeash valleys typical agricultural soils are formed on silts and clays deposited in glacial Lake Champagne.