WSU Extension

Hortsense

Raspberry
 
Disease
Anthracnose 
Boron deficiency 
Fruit rot and cane Botrytis 
Phytophthora root rot 
Powdery mildew 
Spur blight 
Yellow rust 
Insect
Aphids 
Brown marmorated stink bug 
Cutworms and armyworms 
Dryberry mite 
Leafrollers 
Loopers 
Raspberry beetle (raspberry fruitworm) 
Raspberry crown borer 
Root weevils 
Rose stem girdler 
Spider mites 
Spotted wing Drosophila (SWD) 



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Caption: Boron deficiency symptoms on leaves
Photo by: R.S. Byther
  
Raspberry : Boron deficiency
(revision date: 5/6/2014)


Biology
Boron deficiency affects the level of growth hormones in plant tissue, as well as pollen tube growth. Bud break in the spring is delayed, and many buds die off. Other symptoms include abnormal or uneven shoot growth in the spring, malformed dark blue-green fern-like leaves; small and malformed crumbly fruit, and underdeveloped roots. Fruit ripening may be delayed, and overall yield is significantly decreased. Boron deficiency is relatively common in Western Washington and Oregon.
Management Options

Non-Chemical Management
  • Apply fertilizer containing boron. Spring applications are most effective.
Select non-chemical management options as your first choice!

Chemical Management

None recommended

Images

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Caption: Boron deficiency symptoms on leaves
Photo by: R.S. Byther
Caption: Boron deficiency symptoms on fruit and leaves
Photo by: R.S. Byther