Throughout the growing season, vegetable crop farmers often report suspected herbicide drift injury. Each type of herbicide results in specific types of injury. Knowing what to look for can help us narrow which herbicide or herbicide mode of action could be responsible. To document how watermelon and pumpkin respond to various herbicides, we sprayed a[Read More…]
Jeanine Arana
Using herbicides with different modes of action is one way to more effectively control weeds and avoid or delay herbicide resistance. But how do you know if you are rotating herbicides properly? Group Numbers. Most herbicide labels have a herbicide Group number on the front page, usually above or next to the product’s trade name[Read More…]
As of March 29, 2022, Reflex herbicide is registered for use on select vegetables in the state of Indiana through an indemnified 24(c) special local needs label. Below we discuss what this means for Indiana vegetable producers and how to access the new label. What crops are included?: Pea (succulent) Bell and non-bell pepper (transplanted)[Read More…]
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…]
Question: What happened to these fruit? Answer: Hail damage. A storm that happened in middle July brought hail to parts of Indiana. Hail hit small fruit, and damage became pronounced as fruit grow. More information about the damage to vegetable crops can be found in the article Hail Damage published in Vegetable Crops Hotline Issue[Read More…]
Watermelon is growing in this bed, but something went wrong. What happened? Answer: The weed morningglories are taking over watermelons. Morningglories have become one of the most severe weeds observed in the watermelon field in southern Indiana. More information about this weed can be found in the article Morningglories in this issue of Vegetable Crops[Read More…]
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…]