By Chuck Capps, CGSRVP Coordinator
Irrigation is back in full swing with the exception of the White County field that received 2.2 inches of rain. The irrigation started earlier this week at the Prairie County field may be the final irrigation with five more fields needing one possibly two more irrigations depending on rainfall. Dr. Jason Kelley, Extension Agronomist – Wheat and Feed Grains, wrote a newsletter that addresses irrigation termination for Arkansas Row Crops, which can be found at www.arkansascrops.comwith direct link http://www.arkansas-crops.com/2019/07/22/corn-irrigation-terminated/. Dr. Chris Henry, University of Arkansas Irrigation Specialist, has put together a fact sheet to help predict final irrigation using soil moisture sensors, which can be found at https://www.uaex.edu/environment-nature/water/Irrigation%20Termination%20Factsheet%20July%202018.pdf.
We found two leaves on two plants with Southern rust in White County Verification Field just north of Griffithville. This field is at a stage where Southern rust could affect yield, but we are not applying a fungicide at this point because it is not very active in the field. I also found about a half dozen leaves in Desha County Verification Field at Pickens, but this field is less than two weeks from black layer.
For field-specific information, refer to the pdf linked below: