Full TGIF Record # 70731
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Bell, G. E.; Martin, D. L.; Stone, M. L.; Solie, J. B.; Wiese, S. G.; Dobson, D. D.
Author Affiliation:Oklahoma State University
Title:Mapping large turf areas for variable nutrient application using vehicle-mounted optical sensing
Section:Turfgrass science
Other records with the "Turfgrass science" Section
Meeting Info.:Minneapolis, MN: November 5-9, 2000
Source:2000 Annual Meeting Abstracts [ASA/CSSA/SSSA]. 2000, p. 150.
Publishing Information:[Madison, WI]: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America
# of Pages:1
Keywords:TIC Keywords: Mapping; Nutrients; Fertilization; Technology; Color; Stand uniformity; Application rates; Agrostis stolonifera; Cynodon dactylon; Nitrogen fertilization
Abstract/Contents:"Improved turf management practices are needed to reduce nutrient losses to surface and ground water. Optical sensing and variable rate technology show promise for reducing nutrient use while maintaining adequate turf health and aesthetic value. The purpose of this study was to investigate the use of these experimental technologies for reducing nutrient inputs while improving color and uniformity in turfgrass swards. Various rates of N fertilization were used to encourage differential turf color on stands of creeping bentgrass (Agrostis palustris Huds.) and bermudagrass (Cynodon dactylon Huds.) at the Oklahoma State University Turfgrass Research Center in 2000. The study contained main plots that were broadcast fertilized, variably fertilized, or received no fertilization. Each main plot contained subplots pre-fertilized at five different rates to establish a variable color stand. Broadcast subplots were tertilized weekly regardless of need, variable subplots were fertilized weekly according toneed, and control subplots were not fertilized. Preliminary results suggested that broadcast and variable fertilization according to measurements made with optical sensing, encouraged subplot uniformity equally. Variable fertilization, however, reduced nutrient use by 22%."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Bell, G. E., D. L. Martin, M. L. Stone, J. B. Solie, S. G. Wiese, and D. D. Dobson. 2000. Mapping large turf areas for variable nutrient application using vehicle-mounted optical sensing. Annu. Meet. Abstr. p. 150.
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