Crop Clinic

The colder weather has delayed wheat bulb fly egg hatch at our monitored sites to a great extent, and whilst there are some eggs hatching, it is still in its very early stages.

 Once the weather warms up then egg hatch will get moving. There is a three week window or so for growers to apply their egg hatch drenches of chlorpyrifos to target grubs as they hatch and before they get into wheat plants, however, if the current cold snap is prolonged then this spray window will increase. Wheat bulb fly egg hatch can last for the next month or two, but experience tells us that the peak of egg hatch is likely to occur around 2-3 weeks after the onset of egg hatch.