Category Archives: Corn

Corn Diseases in South and Central  Texas, So Far

This season has been unusual for corn diseases.  Early in the year, starting in south Texas and progressing north, the fungal disease, northern corn leaf blight (Figure 1), has been very prevalent.  Usually, a few lesions of the disease are seen on the lowest leaves and the disease never progresses.  Disease development is driven by frequent rain and temperatures lower than 80°F.  In a typical Texas growing season, infrequent rain, but moreover increasing temperatures will hinder the fungus.  Weather conditions early in the season supported disease development.  There… Read More →

Soil management considerations for upcoming pre-emergence herbicide applications in corn and sorghum

Many farmers across Texas will be thinking about planting corn in just a couple of months, and sorghum shortly after that. Managing soil for good seed-soil contact and for fertilizer nutrients are common concerns as the time for planting nears, but understanding how the management of soil works into integrated pest management (IPM) programs can be helpful to ensuring the effectiveness of expensive pre-emergence (PRE) herbicide applications as well. There are two concepts presented in this article to consider for how soils effect PRE herbicides. 1. Activity –… Read More →

Insect Pest Update

Dr. David Kerns, Texas A&M AgriLife Extension Service   Cotton: Cotton fleahoppers (CFH) have been extremely bad in cotton this year throughout the eastern half of Texas. In the Brazos River Bottom we have fields running 100-150% CFH infestation based on terminal inspections; the threshold is 10-15%. These large populations are the result of ample rainfall and production of weedy host harboring CFH. The good news is CFH are easy to kill with the right insecticides. The bad news is the CFH are continually reinvesting sprayed cotton and… Read More →