Author Archives: Emily Symmes

Bloom Disease Treatments and Honey Bee Safety

Emily Symmes, UC IPM Advisor, Sacramento Valley and Franz Niederholzer, UC Farm Advisor, Colusa, Sutter & Yuba Counties. Disease management during prune bloom using fungicide sprays is critical to setting a successful crop, particularly in years with wet bloom conditions that drive pathogen development and spread. Of particular concern, and often treated … Continue reading

Harvest Damage Evaluation for Walnuts

Harvest of the earliest walnut varieties has begun in some locations. Plan accordingly to obtain the ever-important harvest samples! Harvest samples can reveal a number of common sources of kernel, shell, and hull damage. These include damage caused by insect pests, diseases, and environmental/physiological factors. Here are information, tables, and photos that can help identify the sources of damage in your walnut harvest samples. Continue reading