Females of the soybean cyst nematode (SCN) are visible on a soybean root (see photo below). The cyst is a dead female filled with eggs. As the female ages, she becomes dark brown in color. For more information on soybean cyst nematode please refer to E-210 and the Soybean Cyst Nematode website. (Click on small images below to see larger image.)
|Crushed SCN female with eggs (45x)||SCN Egg at 400x||SCN Egg and Juvenile at 100x|
|SCN Females on Soybean Root
|SCN-Infected Soybean Roots|
|Above-ground symptoms, when present, mimic nutrient deficiencies or other stress factors|
Back to top of page. | Back to Picture of the Week Index
|P&PDL Home Page |
The Plant & Pest Diagnostic Laboratory at Purdue University.