Full TGIF Record # 58427
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Web URL(s):http://www.tandfonline.com/doi/pdf/10.1080/1065657X.1999.10701950
    Last checked: 10/01/2015
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Author(s):Hue, N. V.; Sobieszczyk, B. A.
Author Affiliation:Department of Agronomy and Soil Science, College of Tropical Agriculture and Human Resources, University of Hawaii, Honolulu, Hawaii
Title:Nutritional values of some biowastes as soil amendments
Source:Compost Science & Utilization. Vol. 7, No. 1, Winter 1999, p. 34-41.
# of Pages:8
Publishing Information:Emmaus, PA: JG Press
Keywords:TIC Keywords: Soil amendments; Bio-organic amendments; Organic matter; Animal manures; Clippings; Peat humus; Digested sewage sludge; Sewage sludge; Soil improvement; Growing media; Chemical composition; Urea; Nitrogen mineralization; Nitrogen immobilization; Soil mixtures
Abstract/Contents:"As a result of increased population, improved standards of living, and strict environmental laws, biowastes have been generated in huge quantities. Thus, land applications of these wastes are desirable, or even necessary, to keep the environment healthy and to conserve natural resources. Yet, the success of such uses requires knowledge of complex biochemical reactions when the wastes are applied to soils. To obtain this knowledge, we evaluated soil amendment properties, primarily nitrogen (N) mineralization/immobilization of six biowastes when used as plant growth media. An immature yard trimmings compost, ground fresh corn stovers, a commercial peat moss, a chicken manure, and two biosolids were each mixed with a Mollisol at either 25 percent and 50 percent by volume for the plant based wastes, or at 2.5 percent and 5.0 percent by weight for the animal based wastes. Treatments with urea at 0, 70 and 210 mg N kg ⁻¹ were included for comparison. The treated soils were incubated moist for two weeks at which time they were sampled for chemical analysis, and planted to tomatoes. The results showed that those wastes, when added to soil, produced growth media with C/N < 15, and released inorganic N, that increased dry matter yield of tomatoes many times over that of the unamended control. In contrast, a waste amended soil with a C/N > 20 immobilized some inorganic N, reduced plant growth, and caused N deficiency in tomatoes. Such a deficiency was characterized by low N concentrations in leaves (< 2.0 percent) and chlorosis, which corresponded to a color index of 0.25 or less. Biowaste amendments also affected soil P extractability differently: Chicken manure increased NaHCO₃-extractable P many fold over the control, whereas corn stover, peat moss and raw biosolids did not. The yard trimmings compost and the anaerobically digested biosolids increased soil P moderately."
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hue, N. V., and B. A. Sobieszczyk. 1999. Nutritional values of some biowastes as soil amendments. Compost Sci. Util. 7(1):p. 34-41.
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    Last checked: 10/01/2015
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