…leaf. USDA/ARS Photo by David Hall This marks the first instance of a CLas-positive ACP being found in Ventura County. Fortunately, no Huanglongbing (HLB) quarantine zone will be established due…
Positive Outlook for the California Walnut Industry, After Years of Challenges
…fostering strong pollination and yielding abundant nut sets. Veteran growers have noted the trees’ improved resilience to higher temperatures compared to previous years under stress. The orchards’ full leaf canopy…
Potential of Biofungicides in Combating Disease Pressure in Organic Carrots
Alternaria leaf blight continues to pose a significant challenge for organic carrot producers. UC Cooperative Extension (UCCE) researchers have been trialing different materials for combatting disease pressures. The pathogen causes…
Almond Matters: Pest Pressures Low, But Activity Likely to Pick Up
…Burkdoll noted. OTHER IMPACTS OF ATYPICAL WEATHER THIS GROWING SEASON While the weather has kept pest pressures low, it has also contributed to disease problems. Burkdoll explained that Alternaria has…
Almond Matters: Tough Year for Disease Pressure
…“Definitely going to be a higher pressure disease year this year for sure, across the board,” Burkdoll noted. “So, getting on diseases like Alternaria and scab early is better than…
Agronomic Minute: Protecting Crops from Spider Mites
…“Signs of mite feeding include leaf stippling or webbing earlier in the summer, and growers can see mite eggs under the leaves as the season progresses.” Treating for spider mites…
Almond Matters: Remaining Vigilant with Alternaria Management
…of Alternaria management. “Quash is really good about that. Quash is the foremost triazole, Group 3 fungicide that has very good activity on Alternaria as well as scab and shothole…
Grape Growers Facing Odd Year for Disease Pressures
…this early or any time until bloom. So, there’s a high propensity to get leaf botrytis, which is just botrytis infecting the leaf. Which in turn, when the blooms come…
Agronomic Minute: Staying Vigilant Against Alternaria
…should be looking out for late blight, or Alternaria alternata. It basically requires warm temperatures and leaf wetness to infect almonds and tree nuts,” Rieser explained. “Right now, with this…
Almond Update: Staying Efficient with Nitrogen Plans
…70 percent leaf out starts and adjust fertigation rates according to your fruit load, to your fruit set,” Saa explained. “Before that, it will not be efficient. You will have…
Agronomic Minute: Protecting Pistachio Orchards from Disease
…noted. “If the orchard does have a history of Botryosphaeria panicle, or shoot blight, you really want to treat when the panicles or the flower clusters appear in the spring.”…
Agronomic Minute: Taking an Integrated Crop Health Approach
…outcomes. One of the ways that the ProNutiva approach has shown promise is in helping combat bloom diseases in walnuts. Rieser said that growers dealing with walnut blight in orchards…
Officials Respond to Confirmed ACP Discovery in Sonoma
Adult Asian citrus psyllid on a citrus leaf. USDA/ARS Photo by David Hall Asian Citrus Psyllid (ACP) has been confirmed in Sonoma Valley. Local officials with the Sonoma County Department…
Almond Matters: On the Brink of Almond Bloom
…But if there’s no rain in the forecast you can probably do a petal fall spray and get by with it.” Blossom blight can be a particular issue for growers….