It’s well documented that if a micronutrient is missing or deficient, your expected yield could crash.

Soil fertility, revisited 

Practical Research: The history of crop production on the Prairies was one of nutrient extraction at an alarming pace

Soil fertility: a simple concept that requires long and well thought out answers. There are lots of articles on soil nutrient testing, along with many procedures, methods and interpretations.  Early on in the 1970s with Alberta Agriculture, my colleagues and I were very surprised with the answers to the soil testing questions we asked. A […] Read more







Figure 5. A crop of Herta, an old two-row barley variety, in northeastern Saskatchewan’s Carrot River valley, with potassium added at left.

Potash fertilizer: Time for another look

Expect consequences if we keep hauling away more K than we apply

When the three Prairie provinces established provincial soil test laboratories in the 1960s, that was the start of a real advance in learning about potassium (K) as an essential plant nutrient. Until then it was not much of an issue, as many experiments showed no field crop response. With many thousands of farm field soil […] Read more