Case Field #1
May 8, 2003
Carroll County, Iowa
Crop - Alfalfa
Plant Height = 15 inches
Crop Planted 2001 and 2002 (two separate fields)
40% of stand is stunted with lots of blackstem present, up to 40% of lower
leaves dead or dieing on stunted plants (appears to be due to blackstem).
Also distorted leaves and growth on upper portion of plant, new leaves curled
and distorted. Individual plants (2%) scattered in field with no visible
problem
1600 X 1200 Resolution
Individual File Size = 600 KB to 700 KB
(Click on Image for larger View)
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Note healthy plant on the left
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Todd Vagts
Iowa State University Extension
Field Crops Specialist
1240 D. Heires Avenue
Carroll, IA 51401
Office: 712-792-2364; Cell: 712-249-6025; Fax: 712-792-2366
Email: vagts@iastate.edu