Scottville, 49454 Northwest Michigan | Below is a chart showing the response of some crops to micronutrient use. From what I have read, most trials don't show a positive crop response to a micronutrient unless that micronutrient is rated "high". I believe there might be a response to a micronutrient rated medium or low, but probably only if that micronutrient is in extremely low supply in the soil. As grain trader suggested... it would be a good idea to run some soil and tissue samples from your soybeans. I would pull a couple from the best spots in your field, and likewise, pull a couple samples from the poorer spots of your field. I would tend to respect the tissue sample results for micronutrients a little more than the soil sample results for micronutrients. Perhaps that's just me. Relative Responsiveness of Selected Crops to Micronutrients | Crop | B | Cu | Mn | Zn |
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| Alfalfa | High | Med | Low | Med | | Apples | High | Med | Low | Med | | Sugar Beet | High | Low | Low | Med | | Citrus | Med | High | Med | Med | | Corn | Med | Low | Low | High | | Cotton | High | Low | High | Med | | Grain Sorghum | Low | Med | Med | High | | Lettuce | Med | High | High | Med | | Oat | Low | Med | High | Med | | Peanut | High | Low | Med | Low | | Irish Potato | Low | Med | Med | High | | Sweet Potato | High | Low | High | Med | | Rye | Low | Low | Low | Med | | Soybean | Low | Med | High | Med | | Tomato | High | High | Med | Med | | Wheat | Low | High | High | Low | |
Sulfur vs Boron Application at flowering in Soybeans
