Around 20% of applied nitrogen from urea is lost as ammonia UK and European assessments of ammonia losses from granular urea range from 2 to 58%, depending on weather conditions post application and soil pH
DEFRA funded research (NT26), 2002 to 2005, led by ADAS 27% Average ammonia losses from urea applied to grassland, ranging from 10 to 58% 22% Average ammonia losses from urea applied to arable land, ranging from 2 to 43% European Environment Agency (EEA) 6 - 47% Range of losses from urea
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