IA Pest Alert: Begin scouting for alfalfa weevil larvae. April 4, 2025 ICM News article: https://crops.extension.iastate.edu/cropnews/2025/04/2025-alfalfa-weevil-egg-hatch-underway Read More about IA Pest Alert: Begin scouting for alfalfa weevil larvae.
IA Pest Alert: The Handy Bt Trait Table for field corn has been updated for 2025! February 27, 2025 Link included: https://www.texasinsects.org/bt-corn-trait-table.html Read More about IA Pest Alert: The Handy Bt Trait Table for field corn has been updated for 2025!
IA Pest Alert: Register to attend the FREE soybean gall midge webinar happening this Thursday! February 24, 2025 Registration link: https://extension.umn.edu/event/midwest-soybean-gall-midge-research-update Read More about IA Pest Alert: Register to attend the FREE soybean gall midge webinar happening this Thursday!
IA Pest Alert: The 2024 corn rootworm monitoring network summary is available online. February 7, 2025 Link included: https://cornrootworm.extension.iastate.edu/files/inline-files/2024%20CRW%20Network%20Summary.pdf Read More about IA Pest Alert: The 2024 corn rootworm monitoring network summary is available online.
Event Alert: Plan to attend one of the 12 Crop Advantage Series meetings in January 2025. Early registration is open. December 16, 2024 Registration link: https://www.regcytes.extension.iastate.edu/cas/This alert was sent to all subscribers of the Iowa Pest Alert Network. Read More about Event Alert: Plan to attend one of the 12 Crop Advantage Series meetings in January 2025. Early registration is open.
IA Pest Alert: Speed Scout for soybean aphids. Consider crop stage and insecticide choice before spraying late in the season. August 27, 2024 ICM News article: https://crops.extension.iastate.edu/cropnews/2024/08/it-too-late-spray-soybean-aphidsThis alert was sent to all subscribers of the Iowa Pest Alert Network. Read More about IA Pest Alert: Speed Scout for soybean aphids. Consider crop stage and insecticide choice before spraying late in the season.
IA Pest Alert: Keep an eye out for fall armyworm in alfalfa, pastures, corn, and soybeans. August 21, 2024 ICM News article: https://crops.extension.iastate.edu/blog/ashley-dean-erin-hodgson-rebecca-vittetoe-shelby-gruss/fall-armyworms-making-appearance-2024This alert was sent to all subscribers of the Iowa Pest Alert Network. Read More about IA Pest Alert: Keep an eye out for fall armyworm in alfalfa, pastures, corn, and soybeans.
IA Pest Alert: Keep an eye out for ear-feeding pests as you scout. Finding the insect is ideal, but this resource could help identify injury to ears. August 12, 2024 Included link: https://academic.oup.com/jipm/article/15/1/18/7642040 Read More about IA Pest Alert: Keep an eye out for ear-feeding pests as you scout. Finding the insect is ideal, but this resource could help identify injury to ears.
IA Pest Alert: Several species of aphids are infesting corn. Consider crop growth stage, other stressors, and location of infestation before making insecticide decisions. July 30, 2024 ICM News article: https://crops.extension.iastate.edu/cropnews/2023/08/corn-aphids-observed-iowa Read More about IA Pest Alert: Several species of aphids are infesting corn. Consider crop growth stage, other stressors, and location of infestation before making insecticide decisions.
IA Pest Alert: Does it pay? The Corn Fungicide ROI Calculator is a new tool available from the Crop Protection Network July 19, 2024 Included link: https://cropprotectionnetwork.org/fungicide-roi-calculatorThis alert was sent to all subscribers of the Iowa Pest Alert Network. Read More about IA Pest Alert: Does it pay? The Corn Fungicide ROI Calculator is a new tool available from the Crop Protection Network
IA Pest Alert: Early-planted or maturing corn may be attractive to emerging Japanese beetles and corn rootworm beetles. Assess pollination. Silk clipping is often worse at field edges. July 10, 2024 ICM Blog article: https://crops.extension.iastate.edu/blog/ashley-dean-erin-hodgson/watch-out-these-silk-feeding-insects Read More about IA Pest Alert: Early-planted or maturing corn may be attractive to emerging Japanese beetles and corn rootworm beetles. Assess pollination. Silk clipping is often worse at field edges.
IA Pest Alert: Soybean gall midge larvae found in western Iowa. Info about scouting below. June 25, 2024 ICM Encyclopedia article: https://crops.extension.iastate.edu/encyclopedia/soybean-gall-midge Read More about IA Pest Alert: Soybean gall midge larvae found in western Iowa. Info about scouting below.
IA Pest Alert: Tar spot observed at very low levels (single spots) on corn in Central IA. Fungicide application is NOT recommended at this early stage. We encourage farmers to scout their fields. June 14, 2024 Link included: https://cropprotectionnetwork.org/maps/tar-spot-of-cornThis alert was sent to all subscribers of the Iowa Pest Alert Network. Read More about IA Pest Alert: Tar spot observed at very low levels (single spots) on corn in Central IA. Fungicide application is NOT recommended at this early stage. We encourage farmers to scout their fields.
Event Alert: Join us for a field day on July 17th focused on European corn borer! Register below. June 13, 2024 Registration link: https://crops.extension.iastate.edu/european-corn-borer-field-dayThis alert was sent to all subscribers of the Iowa Pest Alert Network. Read More about Event Alert: Join us for a field day on July 17th focused on European corn borer! Register below.
IA Pest Alert: Stalk borers are on the move. Prioritize scouting fields with a history of stalk borers. Look for dead heads in nearby grasses and injury to corn at field edges. More details below. June 3, 2024 ICM News article: https://crops.extension.iastate.edu/cropnews/2024/05/begin-scouting-stalk-borers Read More about IA Pest Alert: Stalk borers are on the move. Prioritize scouting fields with a history of stalk borers. Look for dead heads in nearby grasses and injury to corn at field edges. More details below.
IA Pest Alert: True armyworm larvae found feeding on corn and soybeans in eastern Iowa, up to 10/sq. ft. All infestations in fields with rye cover crops. Identification and scouting details at the link. May 29, 2024 ICM News article: https://crops.extension.iastate.edu/cropnews/2022/06/scout-true-armyworms-spring Read More about IA Pest Alert: True armyworm larvae found feeding on corn and soybeans in eastern Iowa, up to 10/sq. ft. All infestations in fields with rye cover crops. Identification and scouting details at the link.
IA Pest Alert: Scout for bean leaf beetles, prioritizing early-planted soybean fields or those near alfalfa. Look for beetles on plants and soil as they are easily disturbed. Thresholds vary by crop value and management costs. May 22, 2024 YouTube video: https://www.youtube.com/watch?v=KhgOB3fkDpU Read More about IA Pest Alert: Scout for bean leaf beetles, prioritizing early-planted soybean fields or those near alfalfa. Look for beetles on plants and soil as they are easily disturbed. Thresholds vary by crop value and management costs.
IA Pest Alert: Start scouting for black cutworm in emerged corn, prioritizing fields with cover crops this spring. Look for missing or cut plants until V5. Management is only recommended when 2-5% of plants are cut. May 15, 2024 ICM Encyclopedia article: https://crops.extension.iastate.edu/encyclopedia/black-cutworm Read More about IA Pest Alert: Start scouting for black cutworm in emerged corn, prioritizing fields with cover crops this spring. Look for missing or cut plants until V5. Management is only recommended when 2-5% of plants are cut.
IA Pest Alert: Scout for alfalfa weevil. High populations reported in SE Iowa. Economic thresholds vary based on hay price and plant height. Find info on identification, scouting, and management at the link. May 1, 2024 ICM Encyclopedia article: https://crops.extension.iastate.edu/encyclopedia/alfalfa-weevil Read More about IA Pest Alert: Scout for alfalfa weevil. High populations reported in SE Iowa. Economic thresholds vary based on hay price and plant height. Find info on identification, scouting, and management at the link.
IA Pest Alert: Alfalfa weevils are active in southern Iowa. Start scouting now, and keep an eye out for other pests! Use a sweep net or look directly at plants. April 15, 2024 ICM News article: https://crops.extension.iastate.edu/cropnews/2024/04/scout-alfalfa-weevil-southern-iowa Read More about IA Pest Alert: Alfalfa weevils are active in southern Iowa. Start scouting now, and keep an eye out for other pests! Use a sweep net or look directly at plants.
