Sacramento Valley Orchard Source

Irrigation Evapotranspiration (ET) Report for the Woodland, Davis, Dixon, and Verona CIMIS stations.

Irrigation Evapotranspiration (ET) Report for Tehama, Butte and Colusa county CIMIS stations.

Codling moth are challenging to control during the growing season because the larvae burrow inside nuts to feed, keeping them safe from natural enemies and insecticides. However, during winter months, larvae are more vulnerable to predators, offering opportunities for biocontrol by natural enemies, including insectivorous birds.

Since mid-April, many advisors up and down the Valley have been receiving calls about unusual leaf-out in pistachio and walnut. The Sacramento Valley has certainly been experiencing this, too.

If you wait too long to put on the first hull split spray, it doesn’t matter if it’s done by air, ground or robot, what’s in the tank, how slow you drive or what spray volume you use – you are too late to get the best control possible and it will cost you in both lost crop and quality incentives. Once you get the timing right, you have to get excellent coverage when you spray or you will not get the best control possible and the best net return.