Weed Management

The agronomic weed science extension program at Penn State focuses on issues relating to herbicide use, weed biology and ecology, integrated pest management (IPM), cover crop use, and other issues pertaining to the management of weeds in corn, soybeans, forages, and small grains.

Field Crop News

Weather Outlook for July 19, 2017
July 19, 2017
Rather warm and humid conditions will persist through early next week. More unsettled weather will arrive by later Thursday into Friday of this week.
Corn Silking and Early Kernel Development
July 19, 2017
Corn and soybeans have survived a rough spring with challenging weather and pest concerns but yield prospects have been improving during the last two weeks as we approached silking. Observations made during this time can help to determine stand health and predict silage harvest dates.
Figure 1 Penn State SEAREC- 2014 Corn Response to Fungicide Applications- D.G. Voight and A. Collins.
When to Consider Foliar Fungicide Applications on Corn
July 19, 2017
Under certain conditions, applying a fungicide to corn may provide an economic return. A look at few key criteria will help in determining whether to apply fungicides or wait things out.

Invasive Pigweeds

Palmer Amaranth and Waterhemp are new pigweeds that have been found in numerous counties across Pennsylvania and in neighboring states.