* Login CLICK HERE TO REGISTER       


 









Post new topic Reply to topic  [ 2 posts ] 

Author Message
PostPosted: Fri Aug 07, 2009 11:49 pm 
New Member

Joined: Aug 7 '09
Posts: 5
Location: Western Washington
We have a grove of hazelnut trees growing on our land. They're at least 20 years old. They've been growing on this land since I was a kid. My father used to harvest them, but he's gone now, so I'm left to figure out what's what. Last fall/harvest, I picked them off the ground, as soon as I noticed them falling. I dried them in a dehydrator. When I started to open them up, one by one, I found that every one I opened was empty. I opened at least 30 nuts, and every single one was an empty shell. I've read that hazelnut trees can do this, but I don't know why -- some kind of mold? Or did I do something else wrong? Should I open the shells before drying? What causes empty shells? Will the trees ever produce nuts again? I hope this next harvest will be better.

Just today (August 7), I took a premature nut off the tree and broke it open. I was curious. It certainly has a nut growing there. Is this a good sign? Or will the shells be empty again after the harvest?


Top
 Profile  
 
 Post subject: empty hazelnut shells
PostPosted: Sun Aug 09, 2009 4:36 pm 
Super Green Thumb
User avatar

Joined: Feb 15 '09
Posts: 17783
Location: Ohio, USA zone 6
There seem to be at least a couple causes of that, that I found (probably there are more)...

Nut Weevil

A small proportion of our hazelnuts are subject to the attention of a weevil. The nut weevil, like all weevils, is a beetle with a long snout or proboscis which has positively elephantine proportions in the female. She uses it to drill a hole into the young nut as soon as it is set and the shell is still soft. A single egg is laid in the developing kernel, and the hole heals over so there is no sign of infestation. The egg hatches into a grub which feasts on the kernel until the nut falls. The now empty nut has a hole where the young weevil emerged.

Parthenocarpy

This is when a fruit is formed wthout fertilisation by pollen and has no seed. This is fine for grapes but a hazelnut with no nut is just annoying. . . . . The fertilisation process must be done before the leaves unfurl as hazel, in common with most other forest species, is wind-pollinated. Milder winters, and consequent earlier leaf-burst, will reduce the amount of nuts produced the following summer.

http://swepstonecoppice.co.uk/Hazel.aspx


Top
 Profile  
 
Display posts from previous:  Sort by  

Post new topic Reply to topic

 [ 2 posts ] 

    



 

 



You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
All trademarks and copyrights held by respective owners.
Privacy Policy | Contact Us
Copyright HelpfulGardener.com 2003-2014 all rights reserved.