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Organic nitrogen fertilizers

Russo M, Iacona R, Verde E, Belligno A, Sardo VI (2008) Response of soil, water and plants to fertilization with mineral and organic nitrogen fertilizers. Proceedings of the ASABE confer-... [Pg.74]

MEAT MEALS AND BLOOD MEALS. Meat meals and blood meals are available in finely powdered form and are both fairly fast-acting high-quality organic nitrogen fertilizers (9 and 12% N, respectively). There are problems with dust development during application. These fertilizers should only be applied when there is no wind. In addition, during application of the fertilizers it is advisable to wear dust masks or use tractors with climatized cabins. Any fertilizer spreaders which can precisely distribute fertilizers in powder form are suitable for applying them. [Pg.95]

If there is a biologically timed bomb, it must lie in the accumulation in the soil s organic matter of nitrogen that will be released as nitrate by microbes at some unknown time in the future. The calculations made in the previous section suggest that, when nitrogen fertilizer is given in excess of the needs of the crop, a... [Pg.23]

UNIDO (United Nations Industrial Development Organization). 1978. Process Technologies for Nitrogen Fertilizers. New York and 1978. Process Technologies for Phosphate Fertilizers. New York. [Pg.144]

H. -R. Schulten and M. Schnitzer, The chemistry of soil organic nitrogen a review. Biol. Fertil. Soils 26 1 (1998). [Pg.153]

As the one of the main end products of protein metabolism in living organisms, urea is a primary source of organic nitrogen in soil (from animal urine, fertilizers, etc.). Monitoring the level of urea is important for medicine, as well as for environmental protection. Urease is an enzyme that breaks the carbon-nitrogen bond of amides to form carbon dioxide, ammonia and water. This enzyme is widely used for determination of urea in... [Pg.370]

Murphy DV, Macdonald AJ, Stockdale EA, Goulding KWT, Fortune S, Gaunt JL, Poulton PR, Wakefield JA, Webster CP, Wilmer WS (2000) Soluble organic nitrogen in agricultural soils. Biol Fertil Soils 30 374-387... [Pg.228]

Smolander A, Kitunen V, Malkonen E (2001) Dissolved soil organic nitrogen and carbon in a Norway spruce stand and in an adjacent clear-cut. Biol Fertil Soils 33 190-196... [Pg.229]

Skjemstad JO, Spouncer LR, Cowie B, Swift RS (2004) Calibration of the Rathamsted organic carbon turnover model using measurable soil organic carbon pools. Aus J Soil Res 42 79-88 Soon YK, Malhi SS (2005) Soil nitrogen dynamics as affected by landscape position and nitrogen fertilizer. Can J Soil Sci 85 579-587... [Pg.216]

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