The Fertilizer section of the Canola Encyclopedia has more on nutrient deficiency symptoms. Look under the chapters headings for each nutrient.
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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 reason. What do deficiency symptoms look like for… NitrogenPhosphorusPotassiumSulphur What else could it be? Go through the diagnostic procedure. If nutrient deficiency is confirmed as…
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.