Seed & Chemical
Keeping nitrogen in the root zone
By Dow AgroSciences
Oct. 29, 2015 - In their first year of large field-scale trials in Western Canada, nitrogen stabilizers N-Serve and eNtrench proved to secure more available nitrogen for plants and in many cases, contribute positively to yield.
N-Serve and eNtrench, used with anhydrous ammonia and liquid fertilizer respectively, prevent the loss of soil-applied nitrogen to leaching or denitrification by keeping nitrogen bonded to the soil in its positive form.
Fall-applied N-Serve trial results
In 18 trials across Western Canada where N-Serve was applied with anhydrous ammonia in the fall, soil tests taken two weeks after emergence found those fields to have 81 per cent more positive ammonium available, compared to adjacent trials where only anhydrous ammonia was applied.
Why apply nitrogen with a nitrogen stabilizer in the fall?
"Two big advantages: save time and save money," says Jason Smith, market development specialist with Dow AgroSciences Canada. "You have the opportunity to get that field work done in the fall rather than spring, and take advantage of lower fall fertilizer prices.
"Many growers apply nitrogen at higher rates in the fall, understanding that they were going to lose some of that nitrogen. A product like N-Serve eNtrench is going to significantly reduce the potential for those losses and therefore keep all that nitrogen available to your plant for the next spring."
Spring-applied N-Serve and eNtrench trial results
When N-Serve and eNtrench were applied in the spring in 30 different trials across Western Canada, soil tests taken four weeks after emergence showed those fields to have 44 per cent more positive ammonia available, compared to fields with only either anhydrous ammonia or liquid fertilizer.
"Overall the field trial results have been very positive and very encouraging," Smith says. "In areas where we had good rainfall and in some cases excessive rainfall, we're seeing some fairly significant differences in yield as well."
"So overall, anecdotal results, we're seeing about 3-5 bushel yield bump where nitrogen loss is a significant factor, and in the wheat we're seeing yield bumps in that range of 5-10 bushels."
Growers interested in learning more about N-Serve and eNtrench nitrogen stabilizers and product availability should speak with their retailer, or contact their Dow AgroSciences representative. More information is also available at www.protectyournitrogen.ca.