Temperature, rainfall can impact spring-applied nitrogen

As you reflect on the spring weather in 2015, you may be unpleasantly reminded of excessive rainfall that swept through the Midwest, leaving puddles in cornfields and customers concerned about nitrogen loss.

Seasons with excessive rainfall can cause headaches for growers who opted out of using a nitrogen stabilizer to protect their fertilizer investment. Excessive rainfall can mean nitrogen is more susceptible to loss due to nitrate leaching into the groundwater. Using Instinct® II or N-Serve® nitrogen stabilizer will help prevent nitrate leaching during rainy seasons and keep nitrogen in the root zone, where corn needs it most.

Field trials from recent years have proven that Instinct II and N-Serve can provide an average 6 bushels-per-acre increase compared with untreated nitrogen.1 In spring 2015, which was stricken with excessive rainfall, one on-farm trial displayed a double-digit yield increase with the application of Instinct II. Shown in the chart below, spring-applied UAN stabilized with Instinct II resulted in a 16.7 bu./A increase over acres without a nitrogen stabilizer. In addition, the green and gray boxes in the chart show that significantly more nitrogen was kept available to corn stabilized with Instinct II compared with untreated corn from May through July.

Corn uses nitrogen in two forms — ammonium (NH4+) and nitrate (NO3). This chart shows that more nitrogen was kept available to corn stabilized with Instinct® II nitrogen stabilizer compared with untreated corn from May 2015 through July 2015.

Pay attention to temperature, timing

Rain is not the only factor that can affect nitrogen. Temperature can also lead to nitrogen loss. There is increased opportunity for loss when temperatures are warmer than 50 F. Corn needs the most nitrogen support up to 75 days after emergence, so as the weather gets warmer and the crop emerges, make sure nitrogen is available when the crop needs it.

Using a nitrogen stabilizer can help your customers protect their largest input investment regardless of weather conditions this spring. Growers applying UAN, urea or manure can use Instinct II to protect their fertilizer investment, while N-Serve is available to growers applying anhydrous ammonia.

Reduce your customers’ concern about nitrogen loss by recommending Instinct® II or N-Serve nitrogen stabilizer. For more information, visit NitrogenStabilizers.com.

1Average 6-bushel yield return in spring stabilization vs. nontreated from 2008-14 across 100-plus trials.

®Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow. Instinct II is not registered for sale or use in all states. Contact your state pesticide regulatory agency to determine if a product is registered for sale or use in your state. Do not fall-apply anhydrous ammonia south of Highway 16 in the state of Illinois. Always read and follow label directions. ©2016 Dow AgroSciences LLC