Bug Scout 1980 Home Years 1978 • Buy Pesticides Carefully • Check for Rootworms • Clean Grain Bins • Corn Borer Controls • Count Rootworm Beetles • Early Harvest Reduced Corn Borer Damage • Identify Weeds Now • New Program Emphasizes Early Detection of Pests • Store Herbicides Properly to Maintain Strength • Treat Only Where Needed • Treat for Lice Now 1979 • Beware of Damage Caused by Alfalfa Insects • Check for Cornborers • Check for Cutworm Damage in Corn • Compaction Hurts Crop Production • Find Economic Threshold • Good Sanitation Cuts Fly Problem • Here Are Some Insecticide Suggestions • Hiring a Specialist • How to Check for Nematodes in Corn • It May Be A Grasshopper Year • Learn About Pest Management • Make Careful Checks for Rootworm Beetles • Make Sure Tank Mixes Are Compatible • Planting Date Affects Insects • Rains Reduce Borers • Rootworm Control Tips • Rootworms Cause Some Lodging • Select Insecticides Carefully • Short Courses Offer Pest Management • Some Insects Beneficial • Store Pesticides Safely • Switch Insecticides with Moderation • Use Bait for Picnic Beetles 1980 • Avoid Clothing Contamination • Base Control on Economic Injury Level • Check Insects At Pollination • Check Sprayer Equipment • Check Strips Helpful • Check for Rootworms • Consider Biological Control • Control Spray Drifts • Don't Take Recommendations for Granted • Help From A Specialist • Insect Devices Give Partial Control • Kill Those Flies • Many Pests Like Corn Ears • Pest Management Offered in Short Course • Pheromones Aid Insect Control • Reduce Overwintering Pests • Scout for Cutworm • Several Factors Affect Insecticide Performance • Utilizing Heat Units • Windshield May Be Clue • Winter Meetings Helpful • Wireworm Control Outlined 1981 • Check Before You Spray • Check for Cornborers • Consider a Crop Scout • Determining Economic Threshold • Grub Problems Decline • Insects Controlled by Winter • Less Tillage Changes Pest Problems • Lice Control a Hairy Problem • Mexican Beetles Overwinter • Not All Corn Lodging Caused by Rootworms • Not All Insects are "Pests" • Pest Control Isn't Simple • Pesticides are Poisons • Planting Dates Affect Insect Population • Prune Fruit Tress Now • Rootworm Beetles Have Arrived • Sanitation Means Fewer Flies • Start Weed Control Now • Time for Armyworms • Too Cold for Medfly in Indiana • Treatment First-Year Corn for Rootworms Questionable • Watch for Leafhoppers in Alfalfa • Wet Weather May Reduce Some Insect Problems 1982 • Calculated Pest Control Hard to Compute • Check for Cornborer Damage • Chemical Safety Starts with Mice and Men • Flight Dirty to Beat Bird Problems • Inspect Plants for Future Rootworm Control • Pest Management Isn't Poured Out of Cans • Planting Timelines Affects Rootworm Control • Poor Germination Bugs Your Yields • Rootworm Control Adds Support High Yields • Scout Before Pests Steal Your Profits • Start Grain Storage With a Clean Sweep • Taking a Swat at Fly Control • Turn Over New Leaf on Bean Beetle Control • Who Should Give You Crop Advice? 1983 • Pesticide Cover-up Good for Health • Winter Affects Insects? Don't Bet On It! Many Pests Like Corn Ears (Tom Turpin, Entomologist, Purdue University) And you thought picnic beetles could have caused the damage!   Download:     Black & White     Color August 16, 1980 Corn ears in the milk stage are attractive feeding sites for insects.  Tips of ears can be infested with earworms, armyworms, cornborers, rootworm beetles, and Japanese beetles.  The corn ear can also be attractive to nonpest insects like ladybird beetles or picnic beetles. Picnic beetles are shiny black insects with four yellow spots on their wing covers.  These insects, also called sap beetles or fungus beetles, feed on damaged plant tissue.  Picnic beetles can become numerous on corn ears, but only after some other organism has damaged the plant.  Because it doesn't damage the plant directly, there is no need to spray for picnic beetles feeding in field corn. In addition to the insects that damage field corn, two other pests can be quite severe in sweet corn this time of year.  These pests, raccoons and neighbors, are hard to control.    by Tom Turpin, Entomologist, Purdue University Purdue University | Purdue Agriculture | Entomology | Entomology Extension Copyright © 2008, Purdue University, all rights reserved Website developed and maintained by the Entomology Extension at Purdue University If you have trouble accessing this page because of a disability, please contact the Webmaster. An equal access/equal opportunity university