| Pest |
Sampling Method |
| White grub, Wireworm |
Sample one square foot of soil 6 inches deep; one sample should be taken for each 10 acres with a minimum of 5 sites per field; field should not be tilled before samples are taken and soil temperature at 6 inches should be 45-50 degrees F. |
| Cutworms |
Examine 10 plants in 10 locations for the presence of leaf feeding (small irregular holes) and cut plants; also look for live cutworms and estimate the average size of the larvae |
| Slugs |
Examine 10 plants in 10 locations for the presence of feeding damage and slime trails; you will need to observe plants at night or during cloudy conditions to actually observe slugs feeding in plants; be sure to also check for slugs under surface trash and in open seed slots |
| Flea beetles, Cereal leaf beetle, and European corn borer |
Examine 10 plants in 10 locations, count the number of beetles per plant and percent plants infested for the two beetles; count the percent infested plants for European corn borer, pull the whorls our of 5-10 plants per field to determine the size of ECB larvae as well as the average number per plant |
| Stalk borer, True Armyworm, European corn borer, Corn Earworm, Fall Armyworm |
Examine 10 plants in 10 locations and count the percent infested plants |
| Corn rootworms |
Count the number of beetles on 5 plants in 10 locations |
