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Why use NO2 when you can use urea which is preferred by plants? Urea is not toxic like ammonia and nitrite so you don't have to worry about playing with fire.
Urea is quickly converted inside the plant into a valid N source with far less energy then it takes to convert NO3 to a nitrogen source.
Urea is quickly converted inside the plant into a valid N source with far less energy then it takes to convert NO3 to a nitrogen source.
