In contrast to soybean, there are many nematode species that can damage corn. Corn nematodes occur in EVERY soil type, not just sandy soils. Only some of them require sandy soils. Corn nematode damage is common and frequently misdiagnosed. Symptoms are chlorosis, stunting, root damage, yield loss.
Corn nematode range, feeding habitat, soil type, damage potential and damage threshold were published for the United States by Professor Gregory L. Tylka, Department of Plant Pathology and Extension Plant Pathologist, Iowa State University:
Root lesion nematodes are globally the most important nematode species in corn.
For more information on corn nematodes, threshold levels and sampling from Gregory L. Tylka, please follow these links:
- Common corn nematode characteristics
http://crops.extension.iastate.edu/cropnews/2009/08/common-corn-nematode-characteristics - Stunted yellowing or wilted corn – could nematodes be the cause?
http://crops.extension.iastate.edu/cropnews/2012/05/stunted-yellowing-or-wilting-corn-could-nematodes-be-cause - New approach assessing possible nematode damage in corn
http://crops.extension.iastate.edu/cropnews/2012/06/new-approach-assessing-possible-nematode-damage-corn
Sampling of nematodes in corn by Tamra Jackson-Ziems, Associate Professor and Extension Plant Pathologist, University of Nebraska – Lincoln, United States
- Corn nematode sampling
http://cropwatch.unl.edu/corn-nematode-sampling
Nematodes on corn by Dr. Thomas Forge, Research Scientist, Agriculture and Agri-Food Canada, British Columbia
- Nematodes on corn
http://www.farmwest.com/node/967
Information about nematodes damaging corn by Professor Charles Overstreet, Department of Plant Pathology and Crop Physiology, Louisiana State University, United States
Interaction and control of root lesion nematodes (Pratylenchus spp.) and corn pathogens such as Fusarium graminearum, Fusarium verticillioides, Pythium ultimum and Rhizoctonia solani causing seedling diseases in maize. PhD thesis by Marcos Paulo Da Silva, Iowa State University, United States
Information on root-knot nematodes in field corn by Siddharth Tiwari, Department of Entomology, Virginia Tech; Jon D. Eisenback, Department of Plant Pathology, Physiology, and Weed Science, Virginia Tech and
Roger R. Youngman, Extension Entomologist, Virginia Tech
Videos
- Sampling of nematodes in corn by Tamra Jackson-Ziems
Associate Professor and Extension Plant Pathologist, University of Nebraska – Lincoln, United States
https://www.youtube.com/watch?feature=player_detailpage&v=zQ0r3p1cz4E