Northern Sacramento Valley ET Report – April 21, 2017
Irrigation Evapotranspiration (ET) Report for Tehama, Butte and Colusa county CIMIS stations. Continue reading
Yearly Archives: 2017
Potassium, Zinc, Manganese, and Iron Deficiencies in a Wet Spring
Potassium, zinc, iron, and manganese nutrient deficiency symptoms are more prevalent where soils are wet, cold, and saturated. Foliar nutrient sprays can provide quick correction of symptoms and improve tree color and vigor if indeed that is the reason trees were performing poorly in the first place. Continue reading
Steps for Successful Nut Set
Predicting nut set in any given year is often a bit difficult. A review of the many steps involved in successful nut set may provide a better understanding of just what went wrong (or right) for different varieties across the … Continue reading
Tehama County Weekly Pest Update – April 17, 2017
This is the weekly IPM pest update from Tehama county, with biofixes and trap activity for: codling moth, oriental fruit moth, peach twig borer, navel orangeworm, San Jose scale, and walnut scale. Continue reading
Flooded Orchards, Part 3: Management Guidelines to Consider
This is the third in a three part series looking at past experiences of flooded orchards. Here we offer management steps to consider in dealing with orchard flooding in 2017. Continue reading
Northern Sacramento Valley ET Report
Irrigation Evapotranspiration (ET) Report for Tehama, Butte and Colusa CIMIS stations. Continue reading
Flooded Orchards, Part 2: Reflections on Past Flooding Events
Experiences with the 1986 and 1997 levee breaks in Yuba and Sutter Counties and other “high–water” events over the past thirty years afford us some expectations for the types and extents of tree damage that may result from orchard flooding in 2017. Here we reflect on the floods in 1986 and 1997 and considers ways in which specific conditions associated with those floods seemed to affect orchard outcomes. Continue reading
Flooded Orchards, Part 1: Generalities of Flooding Damage
Experiences with the 1986 and 1997 levee breaks in Yuba and Sutter Counties and other “high–water” events over the past thirty years afford us some expectations for the types and extents of tree damage that may result from orchard flooding in 2017. Part one of this article will first discuss some generalities of flooding damage and two key types of damage that tend to follow prolonged orchard flooding, i.e., waterlogging and Phytophthora diseases. Continue reading
Monitoring Codling Moth In and Near Mating Disruption Orchards
It is important to understand how mating disruption affects the ability to monitor codling moth in walnut orchards under mating disruption (MD) as well as in orchards in proximity to MD. Other monitoring methods are necessary in and near MD orchards to effectively manage codling moth populations. Continue reading
March IPM Breakfast Meeting
Reminder! Sutter-Yuba Counties IPM Breakfast Meeting next Tuesday, March 14th, 2017 at 7:30am. We will largely focus on orchards crops (but everything is on the table for discussion!). Planned topics include managing spring diseases in a wet year and getting … Continue reading
Chilling Hours Update – Yuba City
How are we doing on chill so far this year? Because there is not a CIMIS station close to Yuba City, Janine Hasey calculates chill based on a temperature recorder at the UCCE office in Yuba City. Chill data will be updated weekly. Continue reading
Protect Bees from Pesticides by Using Bee Precaution Ratings from UC IPM
Various insects, birds, and other animals pollinate plants. Bees, especially honey bees, are the most vital for pollinating food crops. UC IPM developed Bee Precaution Pesticide Ratings to help pest managers make an informed decision about how to protect bees when choosing or applying pesticides. Continue reading
Notice: DPR Grants Emergency Exemption to Orchards with Standing Water
California DPR has granted an emergency exemption for fungicide applications to orchards that have standing water until June 1st, 2017. Keep reading for more information on which counties are affected and what restrictions you should keep in mind. Continue reading
Looking Ahead to 2018
Meeting season has already begun to ratchet up! Speaking of meetings, we’re in the process of planning agendas and writing talks for a whole slate of upcoming UCCE grower meetings. Keep reading for a master table of the upcoming UC meetings. Happy holidays from all of us, and best wishes as we head into the next cropping year. Continue reading
Prune Aphid Management
Plum aphids are the major pest of prunes. Fall or winter are good timings to control aphid. So, with harvest over, it’s a good idea to settle on an aphid control plan to protect next year’s crop. Continue reading