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…]
Jeanine Arana
Genus: Ipomoea sp. Species: Ivyleaf: Ipomoea hederacea Entireleaf: Ipomoea hederacea integriuscula Tall: Ipomoea purpurea Pitted: Ipomoea lacunosa Morning glories 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. Morning glories get their name because[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…]
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…]
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…]