Once again this year I will be monitoring corn earworm flights throughout the state. Be sure to check the CEW trapping website for updates daily. If you produce sweetcorn or popcorn and are interested in hosting a trap, please contact me at (765) 494-6167 or lingwell@purdue.edu. I will provide the trap and the lure, but[Read More…]
Sweet Corn
After weeks of successive trap catches being empty or in the single digits, we have seen a dramatic increase in the last couple of days in the number of corn earworm moths captured in our pheromone traps throughout the state. At multiple locations catches jumped from near nothing to hundreds of individuals in a single[Read More…]
We have begun our state-wide trapping and monitoring program for corn earworm (Figure 1). The latest trap catch information can be found here. Traps have been placed at seven Purdue Agricultural Centers throughout the state. Trapping will begin June 17, 2021. Please refer to E-31 to learn more about corn earworm identification and management. Management[Read More…]
Whether the focal crops are vegetables, field corn, or soybeans, we’re hearing from growers that poor germination has been an issue this season. The cool, wet conditions we’ve had this spring have delayed seedling germination and growth, and this just happens to be the perfect scenario for seed and root maggots to do their worst[Read More…]
At the Pinney Purdue Ag Center in northern Indiana we had plots in 2020 with no-till sweet corn, pumpkins and winter squash following a rye cover crop. As is common when adapting new planting and tillage systems, we had both challenges and successes. Check out the video presentations to see photos of the plots, and[Read More…]
After weeks of successive trap catches in the double digits, our recent catches have gone down. Be sure to check the CEW trapping website for updates daily. At this point in the season, when field corn is in the silking stage, the threat to sweet corn, and potentially hemp, goes down. The current action threshold[Read More…]
The sweet corn variety plots at Pinney Purdue provide a good chance to observe sweet corn insects. In late July I observed two caterpillars that surprised me. The first was European Corn Borer (ECB), in the tassel where they are often found (Figures 1 & 2). It was a surprise because I have seen many[Read More…]
This article is modified from Darcy Telenko’s article about field corn in a recent Purdue Pest and Crop newsletter. Southern rust of corn is normally a disease of tropical areas. During summer months, however, the fungus which causes southern rust, Puccinia polysora, may move into Indiana or other Midwestern states. Southern rust has officially been confirmed[Read More…]