Your source for orchard news & information in the Sacramento Valley
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
Drew Wolter, UCCE Junior Specialist Horticulture Intern & M.S Student, University of California, Davis, Department of Weed Science Weeds impact orchard productivity and health by competing with young trees for water, light, and nutrients, and may act as hosts for a … Continue reading
Katrina Von Burg and Bob Johnson, Rizzo Lab, Department of Plant Pathology, UC Davis Prune orchard surveys throughout the Sacramento Valley in 2016 and 2017 found significant presence of the wood decay fungus Phellinus tuberculosus. Phellinus causes decay in the … Continue reading
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
It is important to consider irrigation of perennial tree crops leading up to dormancy to foster carbohydrate storage in the trees and to guard against the occurrence of freezing temperatures in dry orchards putting them at more risk to cold injury. Continue reading
Irrigation Evapotranspiration (ET) Report for the Woodland, Davis, Dixon, and Verona CIMIS stations. Continue reading
Join a panel of your Sacramento Valley Area IPM and Farm Advisors to hear about the latest research updates, 2019 field observations, and discuss key production and pest management issues in almonds and walnuts as we wrap up the season and look toward 2020! Continue reading
In order to assess the efficacy of white latex paint in mitigating herbicide damage, a field experiment was conducted in Arbuckle, CA to evaluate the impacts of latex paint on herbicide injury in young almond trees. Preliminary results indicate that in most treatment combinations, old and new paint as trunk protection methods did not reduce tree stress caused by trunk-applied herbicides. Continue reading
Irrigation Evapotranspiration (ET) Report for Tehama, Butte and Colusa county CIMIS stations. Continue reading
Survival is the number one priority of a new orchard planting. Bacterial canker plagues many young prune orchards and rootstock selection can make a major impact on bacterial canker susceptibility. Learn which rootstocks have 100% survival in a UC prune rootstock trial at a high bacterial canker pressure site. Continue reading
You’re certainly familiar with the differences in almond hull split and subsequent harvest timing between different varieties. A typical case of this can be observed with early splitting and harvest of Nonpareil relative to other later varieties. However, you may not often think about differences in hull split influenced by rootstock. Continue reading
Post-harvest scouting offers an opportunity to evaluate the current year’s orchard floor management plan, allowing you to see what weed species have escaped that year’s management plan, where they are, and how severe the infestation may be. These are all valuable pieces of information, which help design a management program that can meet the specific needs of the orchard from year to year. Continue reading
A single yellowing walnut tree in an otherwise healthy orchard has been a frequent sighting when driving along the roadways of the Sacramento Valley this summer. These yellowing trees have also been common this summer. The most likely cause of this yellowing and tree collapse was waterlogging induced root death. Continue reading
This tracker compares maximum hours of irrigation that may be needed during a week to actual hours applied. This tracker is limited to weekly use. It is not capable of tracking total irrigation for the season. Enter your orchard specific … Continue reading
This calculator converts the weekly crop ET estimates reported as inches per acre to gallons per tree. Enter your orchard specific information into the yellow boxes and the results will display under the ‘Calculation Results’ heading below. See our FAQs … Continue reading