1995
DOI: 10.1007/bf00750466
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Estimating ammonia volatilization from unsaturated urea fertilized and urine affected soils by an indirect method

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Cited by 33 publications
(26 citation statements)
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“…Ammonia losses were considerably lower from AS than urea at equivalent N rates in Experiments 1 and 2 at Longerenong (Table 3), and this is to be expected as the pH of the soil in the vicinity of the urea granules is *8.2 (Sherlock et al , 1995 whereas the indigenous pHs of the soils at Longerenong were lower at 7.8 and 7.5. Ammonia loss from AS was considerably higher in Experiment 1 than Experiment 2.…”
Section: Discussionmentioning
confidence: 70%
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“…Ammonia losses were considerably lower from AS than urea at equivalent N rates in Experiments 1 and 2 at Longerenong (Table 3), and this is to be expected as the pH of the soil in the vicinity of the urea granules is *8.2 (Sherlock et al , 1995 whereas the indigenous pHs of the soils at Longerenong were lower at 7.8 and 7.5. Ammonia loss from AS was considerably higher in Experiment 1 than Experiment 2.…”
Section: Discussionmentioning
confidence: 70%
“…Previous studies of NH 3 loss from moist soils treated with urea show that peak emissions usually occur 1-3 DAF (Black et al 1985a, b;Cai et al 2002a, b;Fan et al 2005;Prasertsak et al 2001aPrasertsak et al , 2002Sherlock et al 1995). Prasertsak et al (2001b) reported very small losses for the first 4 DAF to dry soil and it was not until rain or irrigation water dissolved the fertilizer granules that emissions increased in magnitude.…”
Section: Discussionmentioning
confidence: 92%
“…In the urea treatments, the 10 mm of water applied with eco-n would have reduced NH 3 volatilisation losses by washing the dissolved urea below the soil surface (Black et al 1985). In addi-tion, ammonia volatilisation is strongly affected by soil pH (Sherlock et al 1995). Once the pH was reduced to below seven, 2 weeks after the urea and urine applications, further NH 3 volatilisation losses became negligible (Fig.…”
Section: Discussionmentioning
confidence: 99%
“…This paper reports a study on NH 3 , CH 4 , and N 2 O emission from a pasture under conditions recommended by the Intergovernmental Panel on Climate Change (1997), after pig ( Sus scrofa ) slurry application, to assist in defining suitable factors to calculate CH 4 and N 2 O emissions. Micrometeorological methods are available for accurately measuring NH 3 volatilization in the field (Denmead et al, 1974; Denmead, 1983; Wilson et al, 1983; Schjoerring et al, 1992; Sherlock et al, 1995; Wood et al, 2000). Various chamber procedures for NH 3 have also been implemented in the field, but these can introduce experimental artifacts that alter the dynamics and extent of NH 3 volatilization (Freney et al, 1983; Black et al, 1985).…”
mentioning
confidence: 99%