Full TGIF Record # 123922
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Web URL(s):http://www.tandfonline.com/doi/pdf/10.1080/1065657X.2003.10702118
    Last checked: 10/01/2015
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Publication Type:
i
Refereed
Author(s):Cooperband, L. R.; Stone, A. G.; Fryda, M. R.; Ravet, J. L.
Author Affiliation:Cooperband: Department of Soil Science, University of Wisconsin-Madison, Madison, Wisconsin; Stone: Department of Horticulture, Oregeon State University, Corvallis, Oregon; Fryda and Ravet: Laboratory Technicians
Title:Relating compost measures of stability and maturity to plant growth
Section:Special focus: Compost maturity
Other records with the "Special focus: Compost maturity" Section
Source:Compost Science & Utilization. Vol. 11, No. 2, Spring 2003, p. 113-124.
# of Pages:12
Publishing Information:Emmaus, PA: JG Press
Keywords:TIC Keywords: Composts; Compost maturity; Growth; Assessment; Sawdust; Manures; Composting; Nitrogen; Respiration; Soil microorganisms
Abstract/Contents:"Assessment of compost maturity is important for successful use of composts in agricultural and horticultural production. We assessed the "maturity" of four different sawdust-based composts. We composted sawdust with either cannery waste (CW), duck manure (DM), dairy (heifer) manure (HM) or potato culls (PC) for approximately one year. Windrows were tuned weekly for the first 60 days of composting, covered for four winter months and then turned monthly for six more months. We measured compost microbial respiration (CO2 loss), total C and N, C:N ratio, water soluble NO3-N and NH4-N, dissolved organic carbon (DOC), pH and electrical conductivity at selected dates over 370 days. Compost effects on ryegrass biomass and N uptake were evaluated in a greenhouse study. We related compost variables to ryegrass growth and N uptake using regression analysis. All composts maintained high respiration rates during the first 60 days of composting. Ammonium-N concentrations declined within the first 60 days of composting, while NO3-N concentrations did not increase until 200+ days. After 250+ days, DM and PC composts produced significantly more ryegrass biomass than either CW or HM composts. Total C, microbial respiration and water-extractable NO3-N were good predictors of compost stability/maturity, or compost resistance to change, while dissolved organic carbon, C:N ratio and EC were not. The compost NO3-N/CO2-C/ ratio was calculated as a parameter reflecting the increase in net N mineralization and the decrease in respiration rate. At ratio values >8 mg NO3-N/ mg CO2-C/ day, ryegrass growth and N uptake were at their maximum for three of the four composts, suggesting the ratio has potential as a useful index of compost maturity."
Language:English
References:23
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Cooperband, L. R., A. G. Stone, M. R. Fryda, and J. L. Ravet. 2003. Relating compost measures of stability and maturity to plant growth. Compost Sci. Util. 11(2):p. 113-124.
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Web URL(s):
http://www.tandfonline.com/doi/pdf/10.1080/1065657X.2003.10702118
    Last checked: 10/01/2015
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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MSU catalog number: TD 796.5 .C584
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