Clients of custom application may or may not want foliar fertilizer (e.g. Oats are used as a cover following winter wheat, and both oats and volunteer wheat require a much lower dose.Ħ. When it gets hardy and begins dormancy late-season, it requires more glyphosate. For example, alfalfa is a perennial planted for feed before corn. Custom applicators can adjust glyphosate rates when terminating cover crops. Applicators can adjust herbicide mixtures and glyphosate rates between fields depending on weed pressure.ĥ. Where appropriate, border sprays of insecticide can be introduced during herbicide post applications.Ĥ. Injection systems improve work rate by reducing refills or cleanouts between applications.ģ. *Small plot work, such as seed production, consists of many sub-acre plots requiring a range of doses. An injection system can introduce nitrogen at a rate that matches a field’s soil type, while the ammonia is applied on a per-area rate.Ģ. The stabilizers are intended to treat the soil, not the ammonia. Anhydrous ammonia applications require nitrogen stabilizers. Here are a few niche usage scenarios to consider: Usage scenariosġ. Today’s injection systems are more consistent and accurate. And, changes in temperature affected the accuracy of the injection systems, so rates changed as cold mornings gave way to warm afternoons.īut the technology has evolved.A change in speed would prompt a change in injection rate that would not reach the outermost nozzles until half the acre was sprayed. Imagine spraying 10 gpa using a boom that holds 15 gallons. Latency (aka lag) issues were commonplace.Spray concentrations would fluctuate because product was injected based on travel speed while the carrier rate was a constant.In the 1990’s, field sprayer operators tried using direct injection and encountered problems: Boomless roadside spraying using an injection system (Photo courtesy of TeeJet).
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