Presentation on theme: "Virtual Referee for Asteraceae I- Lettuce Referee Introduction."— Presentation transcript:
Virtual Referee for Asteraceae I- Lettuce Referee Introduction
2 Introduction Lettuce growers require seed lots that have rapid and uniform emergence with consistent head development so fields need to be harvested only once. Physiological necrosis can affect the development of the lettuce head. The evaluation of lettuce requires a skilled analyst who can accurately classify small seedlings. Evaluations often include interpretation of various degrees of physiological necrosis and require the correct and consistent application of the “50% Rule” to the functionality of the cotyledons.
3 Purpose To promote precision, standardization, and uniformity among seed labs regarding lettuce evaluation. To test the interpretation and adequacy of the existing AOSA Rules Vol. 4 Seedling Evaluation Handbook. To provide data to be used as supporting evidence for future AOSA Rules proposals. To serve as a seedling evaluation training tool within labs utilizing color images. To develop a lettuce seedling evaluation webinar used for training across all aspects of the seed testing industry. Harmonize with ISTA Rules by utilizing color photos for necrosis evaluation and seedling classification. Clarify the difference between physiological necrosis, decay, mechanical damage and discoloration by visual comparison.
4 Objectives Conduct a Virtual Lettuce Referee that tests the evaluation criteria of the Seedling Evaluation Handbook Volume 4. Test the interpretation and adequacy of the existing AOSA Rules for evaluating lettuce and the application of the 50% Rule to the functionality of the cotyledons. Modify the criteria for the new AOSA Seedling Evaluation Handbook (SEH) for the Asteraceae Sunflower Family I – Lettuce, based on the results of the referee.
5 Instructions All analysts are encouraged to participate in this referee, regardless of their lettuce evaluation experience. Surveys from each evaluator are permitted from a single lab. Each participating lab will receive one CD from Anita with this introductory power point, seedling photos and a blank answer form to duplicate as needed for each participant. Answers will be recorded electronically via Survey Monkey. You can find the link to the Lettuce Virtual Referee Survey Monkey on the AOSA and SCST homepages. Please rate your skill level on the answer form as well as approximately how many lettuce samples your lab tests each year. One continuing education point will be given to each participant.
Contacts Elizabeth BadaConnie O’Brien Nunhems USA, INC.ESTA 1200 Anderson Corner Road7240 Holsclaw Road Parma, Idaho 83660Gilroy, CA Phone: Phone: Fax: Fax:
Asteraceae Family I- Lettuce Committee Members With special thanks to Riad Baalbaki – CDFA Riad Baalbaki has taken all pictures using “Zoomify”, which he demonstrated at the 2012 AOSA/SCST annual meeting in Des Moines, IA 7