NResponse™ is a urea-based readily available form of nitrogen fertilizer.
NResponse™ performs well on all crops. This premium nitrogen product provides more flexibility in application than other nitrogen fertilizers. Specifically formulated for effective foliar and soil applications, NResponse™ provides nitrogen to the crop in a form that will maximize the benefit. It contains the same dynamic forms of nitrogen found in other AgroLiquid Nitrogen Suite products. NResponse™ has proven, in situations where a quick nitrogen response is needed, to improve yields and quality, compared to conventional nitrogen sources.
This information was taken directly from AgroLiquid's website.