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| Web URL(s): | https://dl.sciencesocieties.org/publications/aj/pdfs/78/5/AJ0780050801
Last checked: 12/09/2016
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| Publication Type:
| Refereed |
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| Author(s): | Mosdell, D. K.;
Daniel, W. H.;
Freeborg, R. P. |
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| Author Affiliation: | Purdue University, W. Lafayette, IN |
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| Title: | Evaluation of Dicyandiamide-Amended Fertilizers on Kentucky Bluegrass |
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| Source: | Agronomy Journal. Vol. 78, No. 5, September/October 1986, p. 801. |
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| Publishing Information: | Washington: American Society of Agronomy |
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| Keywords: | TIC Keywords: Dicyandiamide; Poa pratensis; Nitrification; Nitrification inhibitors; IBDU; Sulfur-coated urea; Soil nitrogen; Nitrogen recovery; Inorganic fertilizers
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| Abstract/Contents: | "Dicyandiamide (DCD), a nitrification inhibitor, is a 67% N compound of low volatility that can be incorporated into fertilizer granules. Urea, ammonium sulfate (AS), and a complete fertilizer (COMP), all amended with DCD so that 10% of the N was derived from DCD, were evaluated in field studies at West Lafayette, In, on 'Wabash' Kentucky bluegrass (Poa pratensis L.) grown on Toronto silt loam (fine-silty, mixed, mesic Udolic Ochraqualfs). Urea, As, Sulfur-coated urea (SCU), and isobutylidene diurea (IBDU) were included for comparison. Equal treatments were applied two or four times per season to provide 196 kg N ha-1 yr-1. Clipping yields in response to DCD-amended fertilizers were similar to those of urea and AS at both N regimes. Initial response to DCD-amended fertilizers was rapid and response to residual N shorter than that of IBDU and SCU; however, recovery of applied N in the tissue was similar between DCD fertilizers and IDBU, and SCU. Averaged over 3-yr, recovery of N ranged from 41.1% for IBDU to 36.4% for AS at 2 X 98 kg N ha-1, and 39.0% for COMP + DCD to 32.6% for AS at 4 X 49 kg N ha-1, respectively. Turf quality of plots receiving IBDU was superior to all N sources. Measurements 24 days after a 15 November application in 1984 indicated DCD inhibited NO-3 formation at the 2 X 98 kg N ha-1 rate (14.6 kg DCD ha-1). Fall-applied DCD did not influence soil NH+4 and NO-3 concentrations at 0 to 0.20 m the next spring. The short period of effectiveness of DCD would seldom warrant its use as a nitrification inhibitor in turf. |
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| Language: | English |
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| References: | 24 |
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| Note: | Paper no. 10526 of the Journal series of the Purdue Exp. Stn., W. Lafayette, IN 47907.
Figures
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Mosdell, D. K., W. H. Daniel, and R. P. Freeborg. 1986. Evaluation of Dicyandiamide-Amended Fertilizers on Kentucky Bluegrass. Agron. J. 78(5):p. 801. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/aj/pdfs/78/5/AJ0780050801
Last checked: 12/09/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: S 22 .A45 |
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