Full TGIF Record # 76807
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Web URL(s):https://link.springer.com/article/10.1023/A%3A1011855431544
    Last checked: 09/27/2017
    Access conditions: Item is within a limited-access website
    Notes: Guide page
Publication Type:
Author(s):Sikora, L. J.; Enkiri, N. K.
Author Affiliation:Animal Manure & Byproducts Laboratory, Beltsville Agricultural Research Center, Beltsville, MD
Title:Uptake of 15N fertilizer in compost-amended soils
Source:Plant and Soil. Vol. 235, No. 1, August 2001, p. 65-73.
# of Pages:9
Publishing Information:Dordrecht, Netherlands: Kluwer Academic Publishers
Keywords:TIC Keywords: Nitrogen uptake; Nitrogen fertilizers; Composts; Organic amendments; Soil amendments; Ammonium nitrate; Phosphorus; Mineralization; Heavy metals; Application rates; Sewage sludge; Urea; Festuca arundinacea; Growth; Clipping weight
Abstract/Contents:"Composts are considered low analysis fertilizers because their nitrogen and phosphorus content are around 1% and the organic nitrogen mineralization rate is near 10%. If compost is added to agricultural land at the N requirement of grain crops (40 - 100 kg N ha -1), application rates approach 40 - 100 mg ha -1. Much lower rates may be advisable to avoid rapid accumulation of growth limiting constituents such as heavy metals found in some composts. Combining low amendment rates of composts with sufficient fertilizer to meet crop requirements is an appealing alternative which (a) utilizes composts at lower rates than those needed to supply all the crop N requirement, (b) reduces the amount of inorganic fertilizer applied to soils, and (c) reduces the accumulation of non-nutrient compost constituent in soils. A study was conducted to compare the effects of blends and biosolids compost (C) with 15N Urea (U) or 15NH4 15NO3 (N) fertilizers to fertilizer alone on tall fescue (Festuca arundinacea L.) growth and N uptake. Blends which provided 0, 20, 40 or 60 mg N kg -1 application rate as compost N and 120, 100, 80 or 60 mg N kg -1 as fertilizer N, respectively, were added to Sassafras soil (Typic Hapludults). Fescue was grown on the blends in a growth chamber for 98 days. Fescue yields recorded by clippings taken at 23, 46, and 98 days and roots harvested after the 98-day clipping increased with increasing fertilizer level for both NH4NO3-or urea-N kg-1 -20mg compost-N kg-1 blends. The data suggest that biosolids compost blended with fertilizer at a rate of 2-6 mg ha-1 did not supply sufficient additional available N to increase yields or N uptake over those of fertilizer alone".
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Sikora, L. J., and N. K. Enkiri. 2001. Uptake of 15N fertilizer in compost-amended soils. Plant Soil. 235(1):p. 65-73.
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    Last checked: 09/27/2017
    Access conditions: Item is within a limited-access website
    Notes: Guide page
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