Posts Tagged: sticky
Wrong Place at the Wrong Time
For the first butterfly, it was the right place at the right time. An alfalfa or sulfur...
An alfalfa butterfly, Colias eurytheme, nectaring on a Mexican sunflower (Tithonia rotundifolia). (Photo by Kathy Keatley Garvey)
Gotcha! This unfortunate alfalfa butterfly fluttered into the wrong place at the wrong time. In its larval stage, it is a pest of alfalfa. (Photo by Kathy Keatley Garvey)
Latest information on pest populations in vegetables
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.
Dimondback moth captures collected on 5-7-19
Sarah Stellwagen: On the Trail of Spider Glue
Spider glue: it's a sticky subject but there's much more to it than that. "Most people are unaware...
A redfemured spotted orbweaver, Neoscona domiciliorum, photographed in Vacaville, Calif. (Photo by Kathy Keatley Garvey)
An orbweaving spider wraps its prey, a honey bee. (Photo by Kathy Keatley Garvey)
It's a wrap. A honey bee encased in a spider web. (Photo by Kathy Keatley Garvey)
Update on area-wide monitoring for diamondback moth, aphids and thrips
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.
Sticky mess on plants
Are you seeing cars, sidewalks, driveways, or other plants covered in sticky stuff, especially...