Potash fertilizers.

Potassium (K) is required by all plant and animal life. While potassium is not a commonly limiting soil nutrient in crop production in Alberta, about 15 per cent of Alberta soils used for annual crop production are estimated to have slight to moderate potassium deficiency. 

Adequate potassium results in superior quality of the whole plant due to the improved efficiency of photosynthesis, increased resistance to some diseases and greater water use efficiency. Potassium helps maintain a normal balance between carbohydrates and proteins. 

Sufficient potassium results in stronger straw of cereal crops and assists in seed filling. Potassium deficiency in cereal crops results in reduced growth, delayed maturity, lodging caused by weaker straw and lower bushel weight. 

Potassium deficiencies are most common on well drained, coarse-textured soils. These deficiencies can be corrected with potassium (potash) fertilizer (K₂0).