The U.S. International Trade Commission, which governs how tariffs are administered, voted this week to lift tariffs on ammonium nitrate from Russia and Trinidad and Tobago. This could be good news for farmers as fertilizer prices continue to soar.

A look at the nitrogen cycle can help growers understand the advantages and disadvantages of particular nitrogen fertilizer sources.

we have a serious, and increasing, problem with uneven distribution of N fertilizer. This problem sticks out like a sore thumb when nitrogen loss occurs, because the areas receiving low N rates have a light-green or yellow-green color that is very visible. But the uneven applications are still happening in years with low N loss, and potentially are causing yield loss in those years as well.