What does nitrogen fertilizer injection mean?
Liquid nitrogen fertilizers have typically been surface applied. This method of application places the fertilizer where the urea nitrogen component of the solution is susceptible to volatilization losses. Previously, these losses were reduced by incorporating the fertilizer into the soil with tillage, but this is not possible in no-till production systems. Technologies are now available to inject liquid nitrogen fertilizers below the soil surface. Typical injection units use no-till opening coulters to create a trench into which the nitrogen solution is applied in a narrow band with a knife behind the coulter (pictured below). Other types of injectors are also available. Injection of nitrogen is not a new method of applying nitrogen; however, units now available to producers are capable of incorporating new technology, such as variable rate applications, as well as being able to operate at higher field speeds, increased widths, and greater fertilizer carrying capacities.
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