Posts Tagged: spray
Citrus Spray Day!
REGISTER TODAY!What?: Citrus Spray Field DayWhen?: November 4, 2022Where?: UC Kearney Ag Center, Parlier, CA |
||||||||||||||||||||||||||
|
||||||||||||||||||||||||||
The Citrus Spray Field Day is a 4-hour classroom and field meeting to discuss airblast spray application effectiveness in citrus. Discussions will cover techniques and considerations for optimizing spray deposition and coverage as well as for minimizing pesticide drift. This training will focus on axial airblast sprayer applications directed to citrus (and other tree and vine) canopies; no herbicide boom sprayer applications. |
||||||||||||||||||||||||||
Agenda
|
||||||||||||||||||||||||||
Continuing Education Units (CEUs) 3.5 of 'Other' CEUs pending approval from California Department of Pesticide Regulation (DPR). |
||||||||||||||||||||||||||
Contacts for More Information
|
||||||||||||||||||||||||||
|
||||||||||||||||||||||||||
|
/table>/h3>/h3>/h3>/h2>/h2>/h2>/h1>
citrus spray day
Orchard Spray Webinar
TWO-DAY AGENDA CAN BE FOUND HERE
spray machines
Did that Spray Work?
First of all, did it go where it was supposed to go?
I have been at several grower meetings lately where there has been talk of pesticide sprays and the value of coverage. If it's not where you want it, its not going to do it's job and might do some other job you don't want. Some sprays need to be spot on to do their job. “Contact sprays” like pyrethrums, oils and soaps need to contact the pest to knock out the pest. Even translaminar materials, like spinosad and abamectin, need to be in the location of the plant where the pest is feeding for them to work.
So how do you assess coverage? Unless you know where the sprays is going, you don't know whether the spray job worked until after you've wasted time and material to see if the pests are gone. Water sensitive papers placed in the tree can tell you where the spray is going and whether the application is successful. Was the volume right? Was the application speed right? Was too much material applied? Too little? The cards can be used for a quick evaluation of spray distribution, droplet density and canopy penetration.
The water sensitive paper cards are rigid pieces of paper that are yellow in color. They have specially coated surfaces that will stain dark blue when exposed to water-like droplets. The cards are stapled into the before you begin spraying. The upper surface will be stained dark blue when exposed by water. The opposite side of the water sensitive cards is water repellent. They cost about a dollar apiece.
Here are some examples of how to use water sensitive cards:
- Aerial Application for detecting coverage and canopy penetration. Cards can be stapled to the leaves at different heights and depths in the tree.
- Orchard Sprayers for evaluating spray distribution and spray penetration throughout the tree. Cards can be stapled to leaves in the upper, center, and lower portions of the tree.
- Backpack / Handheld Sprayers for evaluating spray distribution and droplet density for herbicide applications. Cards can be placed across one run width to determine spray volume and speed.
You can visually inspect the spray cards by counting the droplets by eye, or if needed, using a hand lens or some of the smart phone apps. Quickly glancing at the card, you can determine areas of over-application or under-application, dripping nozzles, or clogged/defective nozzles. It's easy to see whether the aerial spray was effective.
Photo: Spray patterns with different nozzle sizes and different spray volumes
Tom Wolf, https://sprayers101.com/wsp-coverage/
Santa Barbara ACP News
From
Cressida Silvers
ACP/HLB Grower Liaison
Ventura, Santa Barbara and San Luis Obispo Counties
805 284-3310
Reminder of 2019 Fall ACP Area Wide Management Schedule
September 8 - 21: Carpinteria, Summerland, Montecito
September 15 - 28: Santa Barbara, Goleta, and the rest of the county
Here is the University of California website on ACP monitoring techniques and management recommendations: ucanr.edu/sites/ACP/Grower_Options/Grower_Management/
If you are restricted in your choice of materials, applications of horticultural oil can be effective.
Remember to notify beekeepers in your area before treating by contacting the County Ag Department at 805 681-5600. Get additional information about the new on-line bee registration and notification system BeeWhere at beewherecalifornia.com .
ACP continues to be difficult to find in the field. This is a good thing, and we want to keep it that way, so please keep up the good work by continuing to monitor your trees and participate in the Area Wide Management Program.
Remember, difficulty finding ACP does not mean it is not present in the orchard, or not in surrounding residential citrus. The fact that ACP adults continue to show up in yellow sticky traps throughout the south county is a reminder of this.
Secretary Ross Visits Santa Barbara County
CDFA Secretary Karen Ross visited Santa Barbara County last month to hear first hand how neighboring cannabis operations are impacting existing agriculture. Several citrus growers, PCAs, applicators, and I had the honor of speaking with Secretary Ross, along with representatives from the governor's office, CDFA, and the county agricultural commissioner's office.
HLB Update
The most recent map and totals for all HLB detections in the state are posted at the website maps.cdfa.ca.gov/WeeklyACPMaps/HLBWeb/HLB_Treatments.pdf. As of August 2, a total of 1,534 trees and 256 ACP have tested positive for the HLB bacterium, on a total of 1,110 sites, all still in LA, Orange, and Riverside Counties. To date, all HLB detections have been on residential properties, the infected trees have been or are being removed, and ACP treatments applied on a recurring basis to remaining citrus in those areas. No HLB has been found in commercial groves.
Voluntary Best Practices for HLB protection
As HLB detections increase and spread, it's important to be aware of possible actions you could take to further protect your citrus should an HLB detection occur in your area. These Voluntary Best Practices can be found at the Citrus Insider website HERE.
Regulatory responses required by the state in response to an HLB detection are described in CDFA's Action Plan for ACP and HLB .
UPCOMING CPDPC MEETINGS -- All meeting agendas and eventually the minutes are posted at www.cdfa.ca.gov/citruscommittee/ . All meetings are free and open to the public, and accessible via phone/webinar.
- Operations and Outreach Subcommittees meeting date has changed to Wed, Aug 21. Outreach agenda is here, Operations Agenda is pending.
Additional Useful Links:
Summaries of the latest scientific research on combating HLB: ucanr.edu/sites/scienceforcitrushealth/
Science-based analyses to guide policy decisions, logistics, and operations: www.datoc.us
General updates and information on the state ACP/HLB program and regional activities: citrusinsider.org
ACP mounted
Citrus Spray Training Webinar
UC Ag Experts Talk: Understanding effective citrus spray
application through computer simulations
Date: August 21, 2019
Time: 3:00 PM - 4:00 PM
Contact: Petr Kosina (pkosina@ucanr.edu)
Sponsor: UC Ag Experts Talk
Location: webinar
Event Details
Register in advance for the webinar at https://ucanr.zoom.us/webinar/register/WN_ch4h2OIIRdG5uNEyUYv3qQ
Pending: 1 DPR hour of 'Other' CE units and 1 CCA hour of IPM CE units
Note: This webinar has no fee.
Sufficient spray deposition or coverage throughout target tree canopies is an ultimate goal of citrus pesticide application. Yet, how to achieve this goal is usually a challenge to growers or applicators under varying field conditions. Dr. Peter Ako Larbi, UCCE assistant specialist for the spray technology will explore this challenge and use computer simulated data to explain how different techniques may be used to optimize deposition for improved pest control. One hour CEU by California DPR (other) and CCA (pest management) is pending.
Event Reminder
spray rig