Indiana growers have shown increased interest in utilizing cover crops in our corn and soybean production systems over the last decade. Concurrently, there has also been increased utilization of soil residual herbicides to help manage herbicide-resistant weeds such as marestail (horseweed), waterhemp, and giant ragweed in our corn and soybean production systems. Soil residual herbicides can remain active in the soil for a period of weeks to months after application. The length of time a residual herbicide remains biologically active in the soil is influenced by soil texture, soil pH, organic matter, rainfall, and temperature. Since these factors will vary from field to field, definitive time intervals of residual herbicide activity can be difficult to predict. The use of residual herbicides in our corn and soybean production systems may interfere with establishment of fall seeded cover crops under certain conditions. Unfortunately, many of the species being used for cover crops[Read More…]
84 articles tagged "Weeds".
The Purdue Weed Science team is hosting an educational field day for farmers, agricultural industry professionals, Extension educators, consultants and others who apply herbicides.
Favorable weather and soil conditions for planting during the last two weeks of April allowed many growers to get their soybeans planted relatively early this year in many parts of Indiana.
Due to the recent cold wet weather, corn planted in April has either struggled to emerge or the corn that did emerge may have been injured by frost events or it looks bad because of the cold weather.
Planting season is at full swing and postemergence (POST) herbicide application season will be here soon with the recent rains we have received.
Every spring we receive several calls and e-mails about a certain 3-foot tall weed with yellow flowers (Figure 1). The most common yellow flowered weeds we have in Indiana are cressleaf groundsel, the buttercup species, and dandelion.
Since our annual North Central Weed Science Society conference was virtual this past December, all graduate student presentations were pre-recorded to facilitate meeting logistics.
The purpose of this new website is to consolidate all information regarding our Integrated Weed Management research and extension efforts, as well as to highlight the work conducted by our graduate students.
Every spring we receive phone calls and emails with concerns of the presence of poison hemlock (Conium maculatum L.) in pastures, fencelines, and field edges.
There are a number of weed management resources that have been developed by Extension Weed Scientists by a United SoybeanBoard (USB)-funded initiative called “Take Action”.
