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| Web URL(s): | https://www.jstor.org/stable/23433374?seq=1
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https://www.jstor.org/stable/pdf/23433374.pdf
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Garay, Adriel;
Elias, Sabry;
Nott, Heather |
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| Author Affiliation: | Oregon State University Seed Laboratory, Oregon State University, Corvallis, OR |
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| Title: | Methodology to develop a uniform blowing procedure in grass seeds: An example with tall fescue |
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| Meeting Info.: | St. Paul, Minnesota: June 5-12, 2008 |
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| Source: | Seed Technology. Vol. 30, No. 1, 2008, p. 85-86. |
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| Publishing Information: | Lincoln, Nebraska: Association of Official Seed Analysts and Society of Commercial Seed Technologists |
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| # of Pages: | 2 |
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| Keywords: | TIC Keywords: Festuca arundinacea; Methodology; Pure-live-seed count; Seed quality; Seed testing
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| Trade Names: | Uniform Blowing Procedure |
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| Abstract/Contents: | "Uniform Blowing Procedure is a technology that can be used to separate lightweight inert matter in grass seed samples. The benefits of this method have been demonstrated for many years with orchardgrass, Kentucky bluegrass and others. In 2006, the master calibration sample concept and the use of air velocity calibration were incorporated to the AOSA Rules. Based on these new innovations, a systematic research was conducted to develop a uniform blowing procedure for tall fescue. The studies started by finding an optimum blowing point to separate light inert from heavy pure seeds and concluds with a rule proposal to AOSA-SCST as follows: First, a preliminary blowing point was identified by blowing samples at increasing air velocity points and assessing the blowings visually for presence of caryopsis, using the one third-caryopsis size rule. The planting value of the fractions blown out was evaluated by germination tests. The results led to a preliminary identification of the location of the optimum blowing point. Second, the blowing point was validated across a larger number of samples representing different varieties, years, production locations, and seed sizes, using the 1/3 caryopsis size rule. The 100-seed weight of the material blown out and retained portions were measured. Additionally, the germination of the structures blown out and the retained heavy fraction was tested. All these studies made it possible to understand the planting value of the light portion and the retained heavy portion and demonstrated that the blowing point chosen was adequate across the broad range of samples tested. Third, master calibration samples of proven uniformity were developed. This step is critical because seed laboratories cannot use a blowing procedure unless calibration samples of proven uniformity are available. This step made it possible to have calibrations samples for the referee studies so that all labs can find comparable blowing points in their specific blowers. Fourth, uniformity across blowers was tested. The first study was conducted in-house using seven blowers and many blind samples. This study was followed by a national referee where labs calibrated their blowers with the tall fescue master calibration samples provided to them and used 3 blind samples with different levels of light inert content. A second national referee was conducted in late 2007 to encourage more participation and familiarization with the new method. Regardless of the amount of lightweight inert present in the blind samples, all labs were able to blow out comparable amounts of light inert. This proved that, the new standard blowing procedure contributes to uniform separation of light inert. As a result, a rule was proposed to the AOSA-SCST to add tall fescue to the list of species that use blowing procedure. The stepwise methodology used will be illustrated during the research presentation. The advantages of the new method for testing Tall fescue will be discussed. The importance of the methodology used to develop blowing procedures for other species will be discussed." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only!
"Abstracts from oral and poster presentations given at the 98th Association of Official Seed Analysts and the 85th Society of Commercial Seed Technologists (AOSA/SCST) annual meeting" |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Garay, A., S. Elias, and H. Nott. 2008. Methodology to develop a uniform blowing procedure in grass seeds: An example with tall fescue. Seed Technology. 30(1):p. 85-86. |
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| Web URL(s):
https://www.jstor.org/stable/23433374?seq=1
Last checked: 04/15/2016
Access conditions: Item is within a limited-access website
https://www.jstor.org/stable/pdf/23433374.pdf
Last checked: 04/15/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: b3628131 |
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