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Clean air strategy
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<blockquote data-quote="Princess Pooper" data-source="post: 5904660" data-attributes="member: 971"><p>Independent UK research (eg ADAS/SAC report for Defra in 2005) has shown that volatilisation can and does occur extensively from urea application under UK conditions. In hotter countries there is often strict guidance or legislation controlling its use eg only applying cooler months, or when rainfall imminent, or when being incorporated rapidly. Here's a paper from NZ. <a href="http://www.massey.ac.nz/~flrc/workshops/11/Manuscripts/Bishop_2011.pdf" target="_blank">http://www.massey.ac.nz/~flrc/workshops/11/Manuscripts/Bishop_2011.pdf</a></p><p></p><p>Managing nitrogen is like, to use a few clichés, juggling jelly or herding cats and pollution control is essential. With ammonium nitrate, the biggest risk is leaching, hence long-standing controls through NVZs and all the rules that go with that. So far, air pollution has had a relatively light touch. Use of urea has been increasing, as has ammonia pollution, although urea fertiliser is not the only contributor to this. With urea, the biggest pollution risk is volatilisation, hence the call for increased controls. This is Clean Air Strategy, hence the focus on urea. The equivalent 'Clean Water Strategy' has in effect already been addressed through WFD, CSF etc. Manures and slurries can be a big contributor to both air and water pollution hence they are always in the spotlight.</p></blockquote><p></p>
[QUOTE="Princess Pooper, post: 5904660, member: 971"] Independent UK research (eg ADAS/SAC report for Defra in 2005) has shown that volatilisation can and does occur extensively from urea application under UK conditions. In hotter countries there is often strict guidance or legislation controlling its use eg only applying cooler months, or when rainfall imminent, or when being incorporated rapidly. Here's a paper from NZ. [URL]http://www.massey.ac.nz/~flrc/workshops/11/Manuscripts/Bishop_2011.pdf[/URL] Managing nitrogen is like, to use a few clichés, juggling jelly or herding cats and pollution control is essential. With ammonium nitrate, the biggest risk is leaching, hence long-standing controls through NVZs and all the rules that go with that. So far, air pollution has had a relatively light touch. Use of urea has been increasing, as has ammonia pollution, although urea fertiliser is not the only contributor to this. With urea, the biggest pollution risk is volatilisation, hence the call for increased controls. This is Clean Air Strategy, hence the focus on urea. The equivalent 'Clean Water Strategy' has in effect already been addressed through WFD, CSF etc. Manures and slurries can be a big contributor to both air and water pollution hence they are always in the spotlight. [/QUOTE]
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