Authors: Ben Lee, Daniel Hasegawa, Ian Grettenberger
We would like to announce the creation of a new web-based tool that will provide more seamless access to pest population data from a pest trapping network. Pests included are thrips, diamondback moth, and aphids.
We wanted to provide growers with a tool to view the most up-to-date lettuce pest population data available and have developed an app to track pest populations over time throughout the Salinas Valley. Our app can be used to quickly view current thrips, diamondback moth, and aphid abundances, where pest populations are increasing the fastest, and how previous years' pest populations responded to changes in temperature. We hope to add more features in the future and are looking forward to feedback from the community for ways to improve our app or what data presentations would be useful in making management decisions.
The trapping efforts were started by former IPM advisor Alejandro Del Pozo-Valdivia and are now operated by Daniel Hasegawa with USDA-Salinas . Pests are trapped on a weekly basis using sticky traps (diamondback moth: pheromone trap, thrips and aphids: yellow sticky card). Ben Lee created this app as a member of the Grettenberger lab at UC Davis.
Click on the links (below) to open the app in your browser or on your phone, and be sure to bookmark for the most up-to-date pest data. These links can also be found on the Entomology section of the UCCE Monterey website Salinas Valley pest monitoring - Monterey County (ucanr.edu)
Desktop version: https://salinaspestmap.shinyapps.io/salinas-pestmap/
Mobile version: https://salinaspestmap.shinyapps.io/salinas-pestmap-mobile/
- Author: Alejandro Del Pozo-Valdivia
This will be a ZOOM Webinar
When? Thursday August 6th
At what time? From 10:00 –11:15 am
If interested in participating, please register at:
http://ucanr.edu/survey/survey.cfm?surveynumber=31781
We will send the ZOOM link 24 hours before the event
- Author: Alejandro Del Pozo-Valdivia
Please, fill up the registration and survey form at:
http://ucanr.edu/survey/survey.cfm?surveynumber=29983
- Author: Alejandro Del Pozo-Valdivia
We are happy to announce that the diamondback moth capture data, presented as maps, is now housed in our own University of California Cooperative Extension Monterey website.
To access to these maps, simply click on the link below:
http://cemonterey.ucanr.edu/Agriculture/2019_Diamondback_moth_monitoring_maps/
These maps use the closest town or landmark where the traps are located to show moths per trap per day. Moth captures are presented as yellow bubbles. The bigger the bubble, the larger the population of moths is.
On the same page, you will also find the overall population fluctuations of these moths in the Valley, as a series chart.
We also stored the overall fluctuation of aphids and thrips numbers, captured in yellow sticky cards in our UCCE Monterey website. To access to these bar charts, click on the link below:
http://cemonterey.ucanr.edu/Agriculture/2019_Aphid_and_Thrips_Monitoring_Program/
If you would like to learn more about these three monitoring programs happening in the Salinas Valley, do not hesitate to contact Alejandro Del-Pozo at adelpozo@ucanr.edu or 831-759-7359.
- Author: Alejandro Del Pozo-Valdivia
We continue the effort of monitoring diamondback moth (DBM) across the Salinas Valley using sex pheromone baited traps, as shown in the picture above. We have been adding additional traps to cover a larger area along Highway 101. We have daily moth capture data from Castroville to Greenfield. The chart below summarizes these daily captures from our pheromone traps.
As stated in a previous blog post, higher numbers of DBM have been usually recorded in Castroville. It seems like we just passed a generation of adults during late March to early April. Currently, DBM capture numbers are going down. Lower adults in the system could be paired with more caterpillars feeding on several host plants.
We have set up yellow sticky cards to track the overall population of winged aphids and thrips. These sticky cards are in the same locations as the pheromone traps. At this point, data for aphids and thrips is not broken down at the species level.
From the chart above, there was a flight of aphids during late March to early April. Some PCAs mentioned to me that foxglove aphid started to show up in their fields during that time period. It seems now that winged aphid numbers are going down. However, it does not mean that numbers of aphids in our crops are decreasing. We might be facing higher population of wingless aphids in our crops right now.
We need to keep an eye on population dynamics of thrips in the Valley. The ultimate goal is to be better prepared this season to manage those creatures and reduce the incidence of INSV virus. The chart below shows captures of thrips in our sticky cards.
It seems like thrips populations had a spike two weeks ago. Currently, thrips numbers are going down. I believe that keeping track of the fluctuation of thrips numbers in our Valley would help us detect large populations of this pest. There is a need to alert PCAs when the front of a 'thrips wave' would happen.
If you are interested in getting more information on this monitoring effort, please do not hesitate in contacting Alejandro Del-Pozo at 831-759-7359 or adelpozo@ucanr.edu.
