Results 211 to 220 of about 20,584 (260)

Nitrification inhibitors and ammonia volatilization

Plant and Soil, 1971
A nitrification inhibitor applied with ammonium sulphate to bare soil and to grass increased the persistence of ammonium-N in soil and decreased the amount of nitrate-N leached from bare soil. Ammonia was volatilized more rapidly from bare soils treated with ammonium sulphate plus the inhibitor than when ammonium sulphate alone was used; the inhibitor ...
I. S. Cornforth, H. A. D. Chesney
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Ammonia volatilization from flooded soils

Fertilizer Research, 1981
Ammonia volatilization from flooded soils has been studied for over half a century. In reviewing the literature on this subject, it becomes clear that there is no consensus on the importance given to this loss mechanism. In part, the differences of opinion can be explained by the fact that ammonia losses were studied in different environments, but to a
Paul Vlek, Eric T Craswell
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Volatilization of ammonia

1983
Ammonia is ubiquitous in Nature, being formed from the biological degradation of proteins in soil organic matter, plant residues and animal wastes. Its presence is readily detectable near barns, stables and feedlots where plant and animal residues are concentrated but it is also formed in many other situations from less concentrated sources, e.g.
J. R. Freney, J. R. Simpson, O. T. Denmead   +2 more
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Ammonia Volatilization from Senescing Leaves of Maize

Science, 1979
Ammonia release by plants growing in normal air is reported. Contrary to observations made at high ambient ammonia concentrations, corn plants did not absorb ammonia in normal air but released it as they senesced, even while photosynthesizing actively.
G D, Farquhar, R, Wetselaar, P M, Firth
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Relationships between Ammonia Volatilization, Ammonia Concentration and Water Evaporation

Soil Science Society of America Journal, 1964
Abstract The rate of NH 3 volatilization and the rate of water evaporation from soils followed different functions. These functions were not affected by differences in soil texture, soil water, speed, or relative humidity of air flowing over the soil surface.
Tyng‐Tsair Chao, Wybe Kroontje
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Ammonia Volatilization from Spring Wheat Plants

Agronomy Journal, 1988
AbstractPlant shoots may be a significant source of N loss in crops. Ammonia volatilization and CO2 exchange rates from ‘Olaf’ spring wheat (Triticum aestivum L.) plants exposed to low‐ and high‐N treatments were observed from heading through the hard kernel phenological stages.
W. J. Parton, J. A. Morgan, J. M. Altenhofen, L. A. Harper   +3 more
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Ammonia Volatilization from Freshwater Fish Ponds

Journal of Environmental Quality, 1999
AbstractThis study evaluated ammonia (NH3) emissions to the atmosphere from fishpond waters and uneaten, floating feed. Channel catfish (Ictalurus punctatus) were stocked at 550 pond−1 in four, 400‐m2 ponds at the Auburn University Fisheries Research (AUFRU), Auburn, AL, on 30 May 1997. Feed (28% crude protein), prepared as floating pellets was applied
A. Gross, C. E. Boyd, C. W. Wood
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Ammonia volatilization from compound nitrogen-sulfur fertilizers

1993
Co-granulated urea and ammonium sulfate (AS) offer the potential for supplying both nitrogen (N) and sulfur (S) in a form readily available for plant uptake. Possible effects of a partial substitution of urea by AS on urea hydrolysis and ammonia (NH3) volatilization were examined in laboratory experiments.
Oenema, O., Velthof, G.L.
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Ammonia volatilization from sows on grassland

Atmospheric Environment, 2001
Abstract According to regulations, sows with piglets on organic farms must graze on pastures. Volatilization of ammonia (NH 3 ) from urine patches may represent a significant source of nitrogen (N) loss from these farms. Inputs of N are low on organic farms and losses may reduce crop production.
Sommer, Sven Gjedde, Søgaard, Henning Tangen, Møller, Henrik B., Morsing, Svend   +3 more
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Water-manure interactions on ammonia volatilization

Biology and Fertility of Soils, 1994
The integrated horizontal flux method was used to determine NH3 volatilization from surface-applied swine manure (Sus scrofa domesticus). This method allows simple NH3 flux estimates to be made from small source plots based on a measurement of windspeed and NH3 concentration at a single sampling height.
R. Gordon, P. Schuepp
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