Micronutrient deficiency is typically not an issue for mustard production. As a result, such fertilization is not required unless indicated by a soil test. If deficiency symptoms are suspected, a tissue test plus application of the micronutrient in strip tests including untreated check strips should be conducted prior to fertilization of the entire field.
The Wheatland Conservation Area research farm did trials in 2023 showing the effects of zinc and boron application in AAC Brown 18 hybrid mustard and AAC Yellow 80 composite mustard. Results can be found on their website at https://wheatlandconservation.ca/research/.
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