Submitting Turf Samples for Diagnosis

Sampling

• Collect samples early in the week, especially if sending by mail.
• Take plugs from the outer margins of affected areas, including 2/3 symptomatic turf and 1/3 healthy turf.
• Take plugs at least 4-6 inches across with a cup cutter, knife, or shovel to a depth of 3-4 inches or to the extent of the root zone. 
• If possible, send two total plugs per sample.

Shipping

• Wrap each plug completely in aluminum foil (preferred) or newspaper to stabilize. 
• Do not place the samples in plastic bags. Do not add wet paper towels or excess moisture to the packages. This can lead to proliferation of non-pathogens and increased sample decay during transit. 
• Place the samples in a cardboard box and pack them tightly with newspaper or other packing materials. 
• Please fill out the form completely and legibly. Pack the form in the box such that it will not get wet or damaged. 

Mailing

• Take the sample on the same day you intend to mail it. 
• Avoid exposing the sample to excess heat (i.e. closed vehicle on a hot day). 
• Mail early in the week to avoid weekend delays in shipping. 
• Use first-class mail. A next-day service or in-person delivery is the best way to ensure the sample arrives in good condition. 

Photos

• Photos are required with each submission. Please email to turf-samples@purdue.edu.
• While close up photos can be useful on occasion, the best photos show the pattern of damage from eye level across the area. 
• All photos submitted become the property of the PPDL and may be used for training purposes or publications.

Drop-off hours are Monday – Friday, 8 am - Noon and 1 - 5 pm. If door is locked place sample on table outside LSPS room 116 with this completed form. See PPDL website for map to lab. Metered parking spot is available. Call 765-494-7071 with any questions/problems.