–Dr. Jeff Whitworth and Dr. Holly Schwarting
Alfalfa weevils are still active throughout north central Kansas. Even fields that had insecticide treatments which were well timed and effective have been having more larval feeding. These fields need to be treated again as soon as possible as these larvae are still capable of considerable defoliation for the next week or so, especially as we continue to see the fluctuating temperatures. Remember, these are contact insecticides so coverage is very important. Also, please pay attention to the pre-harvest interval (PHI) for whatever product you use as many fields are getting close to that first cutting.
