Full TGIF Record # 20092
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Web URL(s):http://www.tandfonline.com/doi/abs/10.1080/00103628909368207
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Author(s):Waddington, D. V.; Landschoot, P. J.; Hummel, N. W. Jr.
Author Affiliation:Department of Agronomy, The Pennsylvania State University, University Park, PA
Title:Response of Kentucky bluegrass turf to fertilizers containing dicyandiamide
Source:Communications in Soil Science and Plant Analysis. Vol. 20, No. 19/20, December 1989, p. 2149-2170.
# of Pages:22
Publishing Information:New York, NY: Marcel Dekker
Keywords:TIC Keywords: Fertilization; Fertilizers; Dicyandiamide; Nitrification inhibitors; Slow-release fertilizers
Abstract/Contents:"Nitrogen fertilization is of major importance in maintaining turfgrass stands. Although rates and sources of N may vary on different turfgrass areas, efficient utilization of N applications is always important. This research was conducted in the field to determine the value of dicyandiamide (DCD) as a nitrification inhibitor and as a slow-release N source in turfgrass fertilization. The inhibitory effect was studied by applying ammonium sulfate (AS), urea, and a complete fertilizer alone and with 10 and/or 15% of the N replaced with DCD-N to stands of Kentucky bluegrass. Single and split rates totaling up to 196 kg N/ha/yr were used. Soil NO3-N and NH4-N analyses sometimes indicated decreased nitrification; however, turfgrass yield and color were essentially unaffected by these rates of DCD. To assess the slow-release effect of DCD, various ratios of AS-N or urea-N to DCD-N were used to fertilize turf in two experiments. Initial response decreased as the proportion of DCD-N increased, and in one experiment, a residual effect was noted a year after application when DCD comprised 80 or 100% of the N. Severe, but short-lived, phytotoxicity from DCD was noted in the other experiment when more than 40% of the N was from DCD. Under the conditions of this research, DCD appeared to have little value in increasing the efficiency of N fertilization."
Language:English
References:23
Note:Reprint appears in Turfgrass Research Results 1989 [Penn State], 1989, p. 55-73
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Waddington, D. V., P. J. Landschoot, and N. W. Jr. Hummel. 1989. Response of Kentucky bluegrass turf to fertilizers containing dicyandiamide. Commun. Soil. Sci. Plant Anal. 20(19/20):p. 2149-2170.
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http://www.tandfonline.com/doi/abs/10.1080/00103628909368207
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