The pictures above are a perfect example of how a minor element can have a major impact on crop production. According to the plant tissue analysis, this wheat tested at 4 ppm (parts per million) Copper concentration, and “adequate” levels are between 5 and 15 ppm. Copper is a micronutrient which means that it is needed in less quantity than macronutrients, but it is still very much needed. Copper promotes seed production and formation, it’s needed for proper enzyme activity, and it plays an essential role for chlorophyll formation. Wheat is the most sensitive of all small grain crops to a Cu deficiency. We hope that a foliar treatment of copper sulphate will help for now, but in the mean-time we will be conducting a soil test and trying to figure out why the deficiency occurred. Was it leached out of the sandy soil during the wet Winter? Or is Copper there, but being tied up because of underlying problems such as pH or an excessive amount of another nutrient?
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