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| Full TGIF Record # 125179 Item 1 of 1 |
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| DOI: | 10.1080/1065657X.2007.10702320 |
| Web URL(s): | http://www.tandfonline.com/doi/pdf/10.1080/1065657X.2007.10702320 Last checked: 10/01/2015 Requires: PDF Reader Access conditions: Item is within a limited-access website |
| Publication Type: | Refereed |
| Author(s): | Bowden, C.; Spargo, J.; Evanylo, G. |
| Author Affiliation: | Bowden: United States Department of Agriculture - Argicultural Research Service, Environmental Management and By-Product Utilization Laboratory, Beltsville, Maryland; Spargo and Evanylo: Crop and Soil Sciences Department, Virginia Polytechnic Institute and State University, Blacksburg, Virginia |
| Title: | Mineralization and N fertilizer equivalent value of composts as assessed by tall fescue (Festuca arundinacea) |
| Section: | Research Other records with the "Research" Section |
| Source: | Compost Science & Utilization. Vol. 15, No. 2, Spring 2007, p. 111-118. |
| Publishing Information: | Emmaus, PA: JG Press |
| # of Pages: | 8 |
| Related Web URL: | http://www.tandfonline.com/doi/abs/10.1080/1065657X.2007.10702320 Last checked: 10/26/2016 Access conditions: Item is within a limited-access website Notes: Abstract |
| Keywords: | TIC Keywords: Mineralization; Nitrogen fertilizers; Composts; Festuca arundinacea; Nitrogen availability; Bioindicators; Sewage sludge; Manures; Animal manures; Fertilization rates |
| Abstract/Contents: | "The capability to determine nitrogen availability of composts is necessary to ensure that such materials will provide sufficient fertilization to the growing crop and cause minimal environmental degradation. A greenhouse study using tall fescue as a bioindicator was used to evaluate nitrogen availability of two biosolids composts, two mixed yard waste-poultry manure composts, and one commercially-processed poultry litter. Five inorganic nitrogen (as NH4NO3-N) treatments applied at 0, 22.5, 45, 67.7, and 90 mg N/kg soil were employed to establish an N calibration curve. Yield, fescue biomass total nitrogen (as total Kjeldahl N (TKN)), and soil TKN and KCl extractable NO3--N and NH4+-N concentrations of the organically amended treatments were compared to the inorganically fertilized treatments to determine amendment N mineralization rates and N fertilizer equivalent values (NFEV). Nitrogen mineralization rates were greatest in the poultry litter (21%) and Panorama yard waste compost (5%) amended pots. The NFEV of these amendments were 49% and 10%, respectively. Wolf Creek biosolids compost and Huck's Hen Blend yard waste compost immobilized N (-5% and 0.18%, respectively), and had percent NFEV of -0.66% and 0.19%, respectively. Rivanna biosolids compost immobilized N (-15%), but the NFEV was 30% due to the relatively high inorganic N content in the amendment. Nitrogen mineralization and NFEV were generally greater in amendments with greater total N concentrations and lower C:N values. The total N concentration and C:N values were less reliable variables in predicting N mineralization and percent NFEV when a significant portion of the total N was in the inorganic form. Nitrogen equivalency value and N mineralization for each amendment increased with time of sampling, indicating the potential for early season N insufficiency to plants fertilized with compost due to lack of synchrony between N mineralization and plant N needs." |
| Language: | English |
| References: | 32 |
| Note: | Tables Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-like – may be incomplete): | Bowden, C., J. Spargo, and G. Evanylo. 2007. Mineralization and N fertilizer equivalent value of composts as assessed by tall fescue (Festuca arundinacea). Compost Sci. Util. 15(2):p. 111-118. |
| Fastlink to access this record outside TGIF: | http://tic.msu.edu/tgif/flink/RECNO/125179 |
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| DOI: 10.1080/1065657X.2007.10702320 | |
| Web URL(s) : | http://www.tandfonline.com/doi/pdf/10.1080/1065657X.2007.10702320 Last checked: 10/01/2015 Requires: PDF Reader Access conditions: Item is within a limited-access website |
| MSU catalog number: | TD 796.5 .C584 |
| Find from within TIC: | Digitally in TIC by record number. |
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