Nitrogen accumulation of six groups of sorghum grown on a municipal biosolids use site

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Abstract:

Groundwater contamination with nitrate (NO3 ) is a current problem in the U.S. Sources of contamination include disposal of municipal biosolids. Because sorghum (Sorghum bicolor [L.] Moench) is an efficient scavenger of nitrogen (N) from the soil, its production on soils that receive biosolids may reduce N accumulation in those soils. An experiment was conducted to determine the amount of N accumulated by six types of sorghum. Three hybrids each of six types of sorghum (tropical, forage, sudangrass, sorghum × sudangrass, grain, and sweet) were evaluated for N accumulation on a municipal biosolids disposal site. Tropical sorghum and sorghum × sudangrass had the highest dry matter production and accumulated the most N. Nitrogen accumulation was largely a function of dry matter yield. Biomass produced was only adequate for beef maintenance diets but may be a useful biomass source for ethanol production from celulose.

Keywords: ANIMAL FEED; BIOSOLIDS; NITRATE; NITROGEN; SORGHUM; USE

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/106143095X133329

Publication date: November 1, 1995

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  • Water Environment Research® (WER®) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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