Strawberry leaf spot, caused by the soil-borne fungal pathogen, Mycosphaerella fragariae, can infect leaves, petioles, runners, fruit stalks (pedicels), and berry caps or calyxes. Small, dark purple to reddish-purple, round spots, 1/8 to 1/4 inch in diameter (3 to 6 millimeters), appear on the upper leaf surfaces. The center of the spots soon become tan or gray and eventually almost white, while the broad margins remain dark purple. Later in the season, dark specks (sclerotia and/or perithecia) may be seen in the older lesions. Tannish areas form on the undersides of infected leaves. The symptoms on the other plant parts, except the fruit, are almost identical to those that develop on the upper leaf surface. [Read more…]
Identifying and controlling common leaf spot in strawberry
Strawberry leaf spot, caused by the soil-borne fungal pathogen, Mycosphaerella fragariae, can infect leaves, petioles, runners, fruit stalks (pedicels), and berry caps or calyxes. Small, dark purple to reddish-purple, round spots, 1/8 to 1/4 inch in diameter (3 to 6 millimeters), appear on the upper leaf surfaces. The center of the spots soon become tan or gray and eventually almost white, while the broad margins remain dark purple. Later in the season, dark specks (sclerotia and/or perithecia) may be seen in the older lesions. Tannish areas form on the undersides of infected leaves. The symptoms on the other plant parts, except the fruit, are almost identical to those that develop on the upper leaf surface. [Read more…]
Gleanings from SM – CA Virtual Strawberry Field Day; Robots in the Field
From LinkedIn.com:
- Surendra Dara, Entomology & Biologicals Advisor at UC Cooperative Extension, San Luis Obispo County, California, announced that registration is now open for the Virtual Strawberry Field Day on July 14. Please see the agenda at https://ucanr.edu/sites/PSU/files/352199.pdf and register at https://ucanr.edu/survey/survey.cfm?surveynumber=35066
- TTS BV, a company from the Netherlands, posts videos of their TTS automatic transplanters on their website and shares on LinkedIn.com: At TTS we care a lot about technology and innovation! Our robotsystem makes sure that you can plant several lines at once, up to at your own preferred distances and depth. The can be combined with nearly all planting trays or even with your own existing toolbar, so no need for a lot of changes. See www.automatictransplanting.com for videos and photos highlighting their technologies, including a transplant ‘grabber’ similar to one invented right here by a Rutgers agriculture engineer 30+ years ago.
- Back to CA, PlantTape Inc. <https://www.planttape.com/> also shares videos and stories on LinkedIn.com about their planting system that speeds up semi-automatic transplanting using paper-tape connected planting cells that slip into the ground at amazing speeds.
Understanding and controlling angular leaf spot in strawberries
Often considered a minor pathogen, angular leaf spot caused by the bacterium, Xanthomonas fragariae, can cause serious leaf and calyx infections ruining the marketability of fruit if left uncontrolled. [Read more…]
Identifying and controlling common leaf spot in strawberry
Strawberry leaf spot, caused by the soil-borne fungal pathogen, Mycosphaerella fragariae, can infect leaves, petioles, runners, fruit stalks (pedicels), and berry caps or calyxes. Small, dark purple to reddish-purple, round spots, 1/8 to 1/4 inch in diameter (3 to 6 millimeters), appear on the upper leaf surfaces. The center of the spots soon become tan or gray and eventually almost white, while the broad margins remain dark purple. Later in the season, dark specks (sclerotia and/or perithecia) may be seen in the older lesions. Tannish areas form on the undersides of infected leaves. The symptoms on the other plant parts, except the fruit, are almost identical to those that develop on the upper leaf surface. [Read more…]
Grower Input Needed to Help Understand the Role of Anthracnose Diseases
All growers of tree fruit and small fruit, please take a few minutes to fill out this fruit rot survey!
This multi-state survey aims to help us understand the role of anthracnose (fruit rot) diseases and to prioritize grower concerns and challenges. This short survey, linked below, is a part of a multi-state research collaboration that aims to help us understand the impact and role of anthracnose (fruit rot) diseases caused by the fungal pathogens in the Colletotrichum genus and to prioritize grower concerns and challenges.
The link https://go.rutgers.edu/liiy8uep takes you to the article from Penn State that has the survey link at the end of that article. All responses are anonymous. No personal information will be collected.