Friday, October 6, 2023
Tuesday, April 18, 2023
We are thrilled to share a revised Southeast Regional Caneberry Production Guide. Follow this link to the NC State Extension Rubus Portal for the complete guide. This version includes a new chapter on plant growth and an update on fertility. Links to each chapter are included below. A huge thanks to the co-authors Drs. Amanda McWhirt, Christine Bradish, Penelope Perkins-Veazie, and John Havlin.
Thursday, May 19, 2022
Sunday, May 1, 2022
|Black spots on ripe raspberry fruit|
An agent recently sent me this image of raspberry fruit with black spots on them. The fruit was growing in a high tunnel.
We have seen this type of thing in the past and this is what we have gleaned from discussions with other tunnel scientists and lab reports:
- Past pathology reports from labs in NC and SC have identified botrytis and cladosoprium on fruit with similar symptoms.
- One current theory is that tunnels have high relative humidity and lower air circulation. When the flowers begin to turn to fruit, the petals land on the developing fruit and create an ideal tiny spot for diseases to start.
- Suggestions for control would be to make sure there is good air circulation especially during petal fall.
- Apply a fungicide during bloom/petal fall. Consult your state recommendations.
Monday, February 14, 2022
Below is a nursery list compiled by the North American Raspberry and Blackberry Association. I am also providing a PDF link.
Thursday, February 10, 2022
Bill Cline has recently posted a Plant Disease Factsheet on Fusarium Wilt in blackberry. This has so far only been seen in southeastern NC.
Here is the first paragraph, see link for more information.
"Fusarium wilt is an emerging disease of blackberry in commercial plantings in southeastern North Carolina. Fungi in the genus Fusarium are known to cause wilt diseases on plant hosts worldwide. Fusarium
species are often host-specific, attacking only a single host species
or group. Examples in North Carolina include wilts of blackberry,
tomato, eggplant, pepper, watermelon, soybean and ornamentals. The
pathogen is soil borne and can survive for years in infested soils."