Dennis Parr is a seasoned market grower with a wealth of knowledge in plant cultivation. He utilizes various resources to enhance his skills and techniques, including Purdue Extension’s Vegetable Crops Hotline (VCH). Earlier this spring, a VCH article highlighted the cucumber beetle, a pest of cucurbits (link). A few days later, another article alerted growers[Read More…]
Insect and Mite Management
For those of you with late plantings of sweet corn or field corn that is still in the late stages of silking, do not let your guard down! We are still recording high trap catches throughout the state. Almost every reporting location (except for the Purdue Student Farm) is catching a nightly average of moths[Read More…]
Lasioglossum sweat bees are common pollinators in agricultural landscapes. These bees are small black, brown, or iridescent green/blue bees that belong to the family Halictidae. They can often be mistaken for flies due to their small size and nondescript appearance compared to other bees. These bees are historically overlooked as important pollinators for crops compared[Read More…]
Squash Vine Borer While we have disseminated several Delta traps throughout the state, we are getting few reports back from collaborators. Those who have reported recently (Allen, Marion, and Knox Counties) are all still reporting adult moths being active and caught in traps. Corn Earworm Be sure that you are monitoring your dent corn in[Read More…]
Orius insidiosus, also known as the minute pirate bug, is native to North America and a beneficial insect (Figure 1). They are generalist omnivores, feeding on other insects and pollen. Minute pirate bugs belong to the Order of true bugs — Hemiptera — in the family Anthocoridae. Orius insidiosus can be found in a wide range[Read More…]
Thrips, aphids, planthoppers, leafhoppers, and whiteflies are common pests of specialty crops that are often misidentified. Whether it’s tomatoes or squash, it’s important to know the differences between these insects and what it means to see them on or around your crops. Below, we provide some information and diagnostic tips to identify each of these[Read More…]
I monitor three different insect pests with pheromone traps to help make informed decisions about when to spray insecticides or take other actions for management. Trap data can be found on the Extension Entomology Vegetables Website. The longest-running is the corn earworm (Figure 1) trapping network. Purdue Meigs farm, in Tippecanoe County, is still catching[Read More…]
We want to introduce you to a predatory insect that you will find in your cropping systems, and it’s a fly! Predatory gall midges belong to the Cecidomyiidae family and undergo complete metamorphosis from egg through three larval instars, pupa, and finally, the adult stage (Figure 1). This insect overwinters as larvae in cocoons in[Read More…]
Cabbage white butterflies are medium-sized white butterflies in the family Pieridae. They have black spots on their wings, and a black band on the top of their forewings (top wings), distinguishing them from other species. The butterflies themselves don’t do any damage, however their caterpillars do significant damage to plants in the Brassica family, including[Read More…]
The presence of syrphid flies, also called hoverflies, is a welcome sight in agricultural landscapes. Syrphid flies contribute to pollination, pest suppression, and decomposition. There are four subfamilies of syrphids: Pipizinae, Eristalinae, Microdontinae, and Syrphinae. Larvae from the Eristalinae subfamily act as recyclers, feeding on decaying organic matter. The Pipizinae subfamily includes species whose larvae[Read More…]