| Author | Message | ||
     yechiel tal (Talyechiel) |
I'm interested in any information, stadies, practices etc. concerning the possibility to identify diferent types, species of seeds. Adjustments or new equipments for this subject, mothods for calibration. Any techniqe close to this field, related to separating small particals on line etc. Ineed the information to define between types of COTTON SEEDS belong to different cotton species. I'll appresiet any help in this mater. Regards to all. | ||
| Michel Coene (Michel) |
I have no idea how big cotton seeds are. Brimrose (www.brimrose.com) makes an instrument which scans individual seeds and then separates them in a few different bags according to a predicted value. They use it mainly on corn but maybe it can be adjusted for cotton. If you don't want to measure individual seeds but rather bags, it will all depend on how accurate you want to go. For the finest separations, you might have to grind your samples and maybe think mid-IR, or at least find an analyser which goes up to 2500 nm (no fibers!!!). | ||
| Mulualem Tigabu (Muti) |
Our research group is working on the use of NIR technology for the separation of insect infested & damaged, as well as empty and dead-filled tree seeds. The 1225 Infratec analyzer (FOSS Tecator, Sweden) enables you to collect log 1/T spectra on single seeds and also using a modified sampling cup or fiber optic probe, you can acquire log 1/R spectra. You can then develop discriminant models with partial least squares regression or SIMCA (soft independent modelling of class analog) approach. Some of the published works of us can be found in 1. J. NIR spectrosc. 10, 45-51 (2002) 2. Seed sci. & Technol. 30, 383-392(2002) 3. New Forests, 2002 (in press) 4. Seed Sci & Technol. 32 (in press) Hope you will find some useful info in those articles. You can contact me off line for any further info. Good luck with your endeavor | ||
| Mulualem Tigabu (Muti) |
Hi there, Here are additional information on the potential of NIR spectroscopy for identifying different variaties. The articles are: 1. Kwon & Cho, 1998. Identification of rice varieties using NIR spectroscopy. J. NIR Spectrosc. 6, issue A, 67-73. 2. Turza et al. 1998. Multivariate classification of different soyabean varieties. J. NIR Spectrosc., 6, 183-187. You can purchase the articles on-line from NIR publication. For further info contact Tony Davies, the chief editor. Good luck! Mulualem | ||
| John Hill |
I see there is some interest to perform seed identification using NIR. I have done a good bit of work with single seed analysis both qualitative and quantitative. I would be more than glad to share some of what I�ve learned and supply additional information. I can be reached at 410-931-7200. |