Updated June 26, 2018:
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A fertilizer amendment study was conducted near Riverdale and Columbus North Dakota to determine whether current soybean fertility recommendations are appropriate for North Central and North West North Dakota farmers. In-furrow fertilizer treatments, broadcast fertilizer treatments and foliar treatments were included, along with a side-bar treatment of cobalt as a first look at that element that is not required for soybean growth, but is required for N-fixing bacteria. There were no differences between treatments at either site this year from the check yield. Neither were there any differences between treatments with oil percentage or protein percentage in the seed.