Science

Top dress if deficiencies are likely

Science Edition 2014—Key practice: In Western Canada where the growing season is short, the ideal practice is to apply all fertilizer at the time of seeding. However, if shortages are expected or crops are showing deficiencies, soil-applied applications of nitrogen or sulphur fertilizer after emergence will likely provide an economic benefit. Key research: Guy Lafond, Agriculture and...
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Science

Canola needs sulphur fertilizer

Science Edition 2014—Canola growers can experience substantial decreases in yield due to sulphur deficiency. The abstract to the Grant, Malhi and Karamanos review cited above begins with this: “(Canola) has a high concentration of sulphur in its tissue and seed and a particularly high demand for sulphur relative to its yield potential. Therefore, effective sulphur management is...
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Science

Potassium deficiency shows first in cereals

Potassium deficiency symptoms will show up in cereals well before it shows up in canola. As you can see in this photo, potassium deficiency in barley looks a lot like leaf diseases. Soil tests and tissue tests may help identify the problem.
Science Edition 2014—Most canola crops grown in Western Canada are not short of potassium because most Prairie soils have sufficient potassium levels. Sandy soils with low clay content are most likely to be short of potassium, especially if those fields have been in forages where a large percentage of the biomass is removed each year. Cereals in...
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Science

Micronutrients: Take care of macros first

Science Edition 2014—Key practice: Economic response to micronutrient applications is rare for canola in Western Canada. However, if growers apply recommended rates of nitrogen, phosphorus and sulphur and yields are not increasing, growers may want to check the micronutrient situation. Key research: Karamanos, R.E., Westco Fertilizers, et al. “Canola response to boron in Canadian prairie soils,” 2003,...
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Science

Store it, but don’t forget it

Science Edition 2014—After escaping all the yield loss traps in the field, there is one more obstacle to overcome before delivering canola to the elevator: storage. Grain mismanaged in a bin can result in disappointing losses. Paying attention to the moisture and temperature of the grain as well as outdoors is critical to management. Canola storage was...
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