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Coldwater, Michigan | If you use Sulfur in seed furrow as suggested, be careful. Corn can stand a bit in the seed furrow, not much. Beans you want to be real careful.
As to the infurrow micros on high pH soils. May be a good tool, but the type of micros can make a difference here on high pH soils. With pH's as high as you speak of, tie-up of micros is definitely an issue. Many of the liquid micros are not "fully" chelated. That means that they are not fully protected against soil tie-up. Usually the cheaper liquid micros are not fully chelated. A good EDTA chelated micro is fully encapsulated, therefore protecting the element from tying up with the soil. If the nutrient ties up with the soil, it is no longer available to the growing crop.
Several liquid chelates that contain EDTA, are not fully EDTA. Many of them contain other chelates also. Only the products encapsulated by that EDTA will be fully protected. The non EDTA portion will still be subject to tie-up over time. There are several chelators on the market, and the above explanation is generally true of the major types.
Edited by Bill Moyer 12/5/2012 12:13
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Liquid Micronutrient Mix
