Hi, My red raspberry plants are not doing well. The veins of many leaves are yellow and on some plants the entire leaves have turned a light yellow/white. This started well before they started making fruit for the year so I don't think it is just the old canes dying back. The berries that are being produced are small and crumbly on all plants of that variety. There are also some rust spots on a few leaves of new shoots. I have attached pictures of the veining and small berry clusters before they ripened and a picture of a whole shoot that turned yellow. Any ideas what may be causing this? Background info: This patch was started about 12 years ago - I don't know what variety as they came from a friend, but they used to produce nice big red berries. I also have black raspberries in another row. We have kept the raspberries in rows, removed old canes when they were done fruiting and thin some in the spring. My soil is very sandy. For many years it did very well. We did not fertilize early on. At some point around 6 years ago we didn't mow between the rows often enough or weed it well and with our sheltered/minimal amount of wind in our yard, I think we got a fungal disease. To combat this we mowed the patch to the ground one spring and started a spraying regimen. For the past 3 years we have sprayed Captan at bud break and again after the petals fall. We also started fertilizing/adding compost on top (maybe not enough though since it hadn't had any for years?). I think we even threw some peat moss on top last year to change the pH. Two years ago I bought a few Killarney plants (hoping for disease resistance against possible fungal pathogen). The Killarney plants are seemingly doing well and are producing nice sized berries that are not crumbly so I do not think that the crumbly berries on the other plants are due to low pollination. I would appreciate any suggestions for improving my patch. I would also be willing to send more/other pictures if needed.