- Author: Shimat Joseph
- Author: Surendra Dara
- Author: Mark Bolda
A brief FYI for those of you who have seen this bug in your strawberries. It's not uncommon this year.
This is a Say stink bug, Chlorochroa sayi and can cause deformation depending on the stage of the fruit. Note the orange stripe around the outer edge of the body. The triangular area in the back has four yellow spots. This species is a pest in tomatoes, but this year there are high numbers of them in vegetable fields.
Rather than re-writing what is already written on this pest in the UC IPM guidelines, we provide this link from tomatoes:
- Author: Mark Bolda
- Author: Steven Koike
Growers, field managers, PCAs, and other personnel overseeing strawberry on California's Central Coast occasionally encounter strange and bizarre deformities of strawberry fruit and flowers. Such a condition is called “phyllody” and occurs when leaves or leaf-like structures replace the flower and flower parts of strawberry. This condition can also result in the flower parts turning green. Phyllody can occur in two different ways.
1. Non-infectious phyllody: The type of phyllody currently developing in spring 2015 is apparently the non-infectious type. Non-infectious phyllody seems to be associated with an excess of supplemental chilling of the transplants while in storage. Our experience in the field is that these symptoms, alarming as they are, will go away after showing up in a spring flush of fruit. Therefore the condition is not persistent. Figure 1 shows a spectacular example of this disorder.
2. Infectious phyllody: This category of phyllody occurs due to infection by a phytoplasma. Phytoplasmas are bacteria-like organisms that are pathogenic to plants and are vectored by leafhoppers. Leafhoppers carry the phytoplasmas in their bodies and inject them while feeding on plants. Two diseases that cause phyllody are aster yellows and green petal. Strawberry plants infected with phytoplasmas often continue to bear deformed fruit as seen in Figures 2, 3, 4 and 5.
Really nice photo essay from Agnet West.com plus interview of colleague Surendra Dara from his hugely successful field day yesterday.
As Surendra so aptly says in the interview below, "It's important for growers to attend these meetings... and get the updated information from multiple disciplines in one place". Further he goes on, "UC does this best, identify the problems that growers are facing and try to find a practical solution".
Well said my man, and just more reasons why people should be coming to our meetings!
Announcing the Annual Strawberry Field at Spence Ranch on May 28, 2015. Emphasis of this event will be on pest management, with UCCE and UC scientists and regulatory officials presenting.
UCCE's Scott Stoddard and I are putting on a "plant nutrient lunch" on June 2 here at the office at 1430 Freedom Blvd Suite E (same building as before, different number) in the interests of having more discussion with growers, PCA's and other agricultural people about the plant nutrients phosphorous, potassium and nitrogen. Come by for the whole thing or just half an hour if that's all you have time for. Bring your plant nutrition questions (especially P and K, since Scott is covering those and he's from Merced) and enjoy a great lunch!