Raspberry Plant Leaves Turn Brown From Inside On Upper Side Of Leaf Before Spreading To Whole Leaf And Die

Question

Have a problem with my raspberry plants. A small brown section appears on the upper side of the leaf towards the inner middle. The brown section than grows across the whole leaf from the middle to the outside and the plant shrivels up and dies. Not sure what this is and was hoping you could assist. Image 2 – start of the brown discoloring on the leaf Image 1 – brown discoloring spreading on the individual leaf Image 3 – brown discoloring spreading to other leaves Image 4 – brown discoloring spreads and causes plant to shrivel Image 5 – plants dying Note – the brown discoloration does not rub off (eg produce powder)

Answer 1

Check the stems and canes for discoloration, too. It could be spur blight, one of the main diseases of raspberry in NSW.

https://extension.umd.edu/resource/raspberry-and-blackberry-diseases
https://www.gardeningknowhow.com/edible/fruits/raspberry/spur-blight-control.htm
https://www.gardeningknowhow.com/edible/fruits/raspberry/raspberry-leaf-curl-disease.htm