Hort1culturepostharvest Handling

Cultivation-Agronomic Considerations

Canola is a cool season crop that requires more available moisture than wheat, as well as cool night temperatures to recover from hot and dry weather. Hence, canola is usually grown at the wetter and cooler margins of the cereal-growing regions of Canada and other countries.

Because B. juncea (mustard) is more heat and drought tolerant than the rapeseed cultivars B. napus and B. rapa, a double-low germplasm of B. juncea has been developed in Canada and is being tested for its potential as an oilseed crop in the dry prairie region of western Canada. This approach is seen as the most promising means of increasing the production area for "canola-type" oilseeds in Canada.

Although rapeseed grows well on a variety of soils, it does best on loamy soils that do not crust and impede seedling emergence (18). Good yields are also obtained on light and heavy soils if rainfall, fertilization, and drainage are adequate (12). Canola is moderately tolerant to saline soils and has greater moisture requirements than cereals. Canola also requires more intensive management practices; for a good crop, the need for nitrogen is 20% higher than for a comparable cereal crop. Certified seed is usually used for sowing to ensure absence of mustard or weeds and the quality characteristics of the cultivar.

Canola is grown in Canada on summer fallow or cereal stubble land. From an agronomic viewpoint, the crop fits

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