Fire Blight Model Turned Off June 21 – August 20

Sunday Jun 15, 2025

The Fire Blight (CougarBlight) model is a blossom infection model and intended for use during moderate temperatures (50-86°F) that usually occur during spring and early summer and when flowers are open. This blossom infection model attempts...

How Does Codling Moth Mating Disruption Work?

Tuesday Jun 10, 2025

Mating disruption dispensers work by releasing synthetic pheromone which prevents or delays males from finding females, thus reducing the reproductive rate of the population. Now is the time to decide which dispensers to place in the orchard so you have enough time for ordering and to organize your work force.

Monitoring Codling Moth Damage

Tuesday Jun 10, 2025

Monitoring codling moth at the end of each generation gives a good indication of the success of your management program and where in the orchard damage occurs. The sampling protocol for the Taiwan protocol can give you good accuracy and is simple to implement. Banding trees can serve as monitoring and control technique.

Sprayer Calibration

Sunday Jun 01, 2025

While the WSU-DAS system focuses on using pest and disease phenology to properly time pesticide sprays, it is critical that the properly-timed sprays are applied correctly. Without proper coverage, sprays will not serve their intended purpose, and growers may waste material, labor, and money, without getting the anticipated control.

Which Type of Apple Sunburn is in Your Orchard?

Sunday Jun 01, 2025

Sunburn browning is the most prevalent type of sunburn, and is caused by high fruit surface temperatures (FST) and ultraviolet radiation. The FST required to induce sunburn browning varies by cultivar, but is in the range of 113 to 120 °F (45 to 49 °C).