Through the state cooperative extension system, Maria is able to contact an ornamental entomologist via email with some basic questions about her crop very soon after she notices the early symptomology. She attaches images and a copy of her scouting records to her e-mail query.
Description For more on the ELISA technique visit the University of Wisconsin Plant Pathology Lab website. A commercial lab such as Agdia, www.agdia.com, has a variety of services that Maria must sort through. She may send a plant sample into the lab or request a test kit that she could use at her greenhouse operation….
Description Maria mails plant samples along with a Plant Diagnostic Checksheet to a university Plant Pathology Diagnostic Lab. Maria sent two plants exhibiting symptomology and one plant that appeared healthy. Diagnostician Judy O’Mara talks through the steps she goes through to sort out the cause of the chlorosis. Her activities include checking color and health…
Description Maria follows the scouting and monitoring methods and as described in an Extension Fact Sheet from Oklahoma State University Cooperative Extension Service (linked at right). By maintaining accurate records, she is able to refer to them when problems arise and build a database of pests, crop preferences and yearly population cycles. Maria knows from…
Description Maria’s water source is municipal water from a neighboring township. She maintains records of the Water Quality reports sent to her on a yearly basis, but decides to send in a sample to a commercial analytical lab, MDS Harris, in Lincoln, Nebraska since her last report is more than eight months old. To complete…
A Case Study to Determine the cause of Chlorosis in a Crop of Cut Dicentra spectabilis By Marci Spaw, Kimberly A. Williams, Laurie Hodges, Ellen T. Paparozzi and Ingrid L. Mallberg The Grower The grower, Maria Flint, is forcing Dicentra spectabilis as cut flowers for Valentine’s Day sales for the first time. While Dicentra is…
Description Water-based extractions of soilless root media are simply methods to solubilize nutrients in the root medium so that their concentrations can be measured as an estimate of nutrient availability for uptake by the plant. Water-based extraction procedures include saturated medium extractions (SME), 1:2 medium dilutions, pour-thru extractions, and (for plugs) a squeeze method. Analyses…