The vegetable crops have all been harvested and it’s time to just relax, right? Maybe. However, the decisions you make this fall will influence your weed control next spring. In all likelihood, you did not control EVERY weed during the growing season. Inevitably, there were weeds that escaped control. If so, these weeds have already[Read More…]
Weed Management
Genus: Ipomoea sp. Species: Ivyleaf: Ipomoea hederacea Entireleaf: Ipomoea hederacea integriuscula Tall: Ipomoea purpurea Pitted: Ipomoea lacunosa Morningglories are among the most troublesome weeds in many cropping systems in the Midwest. They are difficult to control due to their fast growth, large seed size, and impenetrable seed coat. Morningglories get their name because their flowers[Read More…]
Scientific names: Erigeron canadensis or Conyza canadensis Horseweed, also known as marestail, fleabane, or colt’s tail, is a common and troublesome weed throughout North America due to its high seed production, wind dissemination, lack of seed dormancy, and adaptability to dry and moist soil. Moreover, horseweed populations have shown to be resistant to Group 2[Read More…]
Scientific name: Chenopodium album Common lambsquarters is originally from Eurasia. It is an aggressive weed, adapted to grow vigorously in many different climates and soils, and has been able to establish worldwide. In North America it was once grown as a vegetable crop. In Asia and Africa, it is still cultivated to use as a[Read More…]
If they have not already, your early season residual herbicides will soon run out of steam. Depending on the crop and production system, you may soon lose the ability to cultivate row middles. Now what? For many vegetable crops, managing emerged weeds is difficult with few postemergence herbicide options. This article will focus on cucurbit[Read More…]
Dicamba has been in the headlines the last two weeks. In case you’ve missed it, here are the highlights: On June 3 the United States Court of Appeals for the Ninth Circuit ruled against the Environmental Protection Agency and its 2018 registration of over-the-top dicamba products Xtend, Engenia, and FeXapan and vacated their registrations. The[Read More…]
Waterhemp is prevalent in the Midwest and the Great Plain States. It became a significant agricultural weed in 1990s. Before then it was present in crop fields, but it is presumed that it rarely reached economic infestations. It became a problem in Indiana by 1998. Waterhemp is best adapted where less aggressive tillage is practiced.[Read More…]
Dual Magnum® is registered for use in numerous row crops and specialty crops in the state of Indiana. While some vegetable crops (beans, peas, potatoes, pumpkins, rhubarb, and tomatoes) appear on the specimen or national label (Section 3 label), most do not. Numerous specialty crops that do not appear on the specimen label are included[Read More…]
Scientific name: Ambrosia trifida Giant ragweed is a weed member of the sunflower family (Asteraceae) and native to the United States. It is extremely competitive and difficult to control in broadleaf crops. It emerges as early as March and continues to germinate through spring and early summer. Controlling giant ragweed during summer is not only[Read More…]
Spring is here and with it comes the emergence of weeds- especially problematic perennials like Canada thistle (Figure 1). Below is some information about Canada thistle and methods to manage it. Keep in mind two things: 1) many of these strategies will work for other perennial weeds, and 2) management of perennial weeds often requires[Read More…]