The Fertilizer section of the Canola Encyclopedia has more on nutrient deficiency symptoms. Look under the chapters headings for each nutrient.
How to identify nutrient deficiency
In-crop fertilizer applications can rescue some nutrient deficiency. The following links will help determine the cause of the symptoms, and guide the course of action if a deficiency is the…
Top dress canola with sulphur deficiency
Without enough sulphur, canola cannot produce top yields – no matter how much of the other nutrients are available. Please read an updated version of this article.
Top dress timing
Please read an updated version of this article.
Top dress — yes or no?
Please read the updated version of this article.