Citrus IPM News

The California Citrus Research Board (CRB) is kicking off its 2026 Citrus Growers Educational Webinar Series on June 9, offering California citrus growers and industry professionals an opportunity to hear the latest research updates and management recommendations from leading experts. These webinars are free…

California red scale (CRS) season this season is developing much earlier than what growers and PCAs are accustomed to seeing across the San Joaquin Valley. Degree-day accumulations from multiple California counties are showing a clear trend: crawler emergence and generation timing are advancing well ahead of…

Citrus mealybug activity is increasing in the San Joaquin Valley citrus orchards. Monitor populations and treat when suceptible life stages are present. Manage and incorporate conservative/augmentative biocontrol for sustainable management.

California red scale is a key pest of citrus in the SJV. Its life cycle starts as crawlers produced by overwintering females from the past season. Crawlers move and find a suitable place to start feeding. Once they have settled, they do not move. Current degree-day accumulation since the March 1 biofix (base…

Early Bloom and Elevated Thrips Pressure in CitrusCitrus bloom has now ended across much of the San Joaquin Valley, nearly three weeks ahead of the historical average. In Tulare County, monitoring confirmed the presence of both immature and adult citrus thrips actively feeding on young fruit. This early…