Research in Minnesota has shown that using boron fertilizers will improve the yield of alfalfa and vegetables on some sandy soils. (583 K PDF)
Information gathered from several research projects focused on the use of this particular nutrient. (666 K PDF)
Most Minnesota soils contain adequate amounts. However, small grains grown in organic and peat soils are exceptions. (362 K PDF)
Fe (iron) is required by several enzymes involved in the formation of chlorophyll.
IDC Management in Soybeans: Research from Large Plot Trials (5.9 MB PDF) — Institute of Ag Professionals, University of Minnesota Extension
Are micronutrients needed in high yield environments? (420 K PDF) — University of Minnesota Extension