[Market-farming] For those who have built tunnels using Johnny'shoops bender
Shoemaker, William H
wshoemak at illinois.edu
Sat Feb 18 14:28:36 EST 2012
If you are leaving the ground posts higher, you could add a hipboard at the top of the ground posts. Install wiggle wire and secure the plastic there, letting the plastic hang to the ground. Get 1.5" pvc pipe and use duct tape to secure the pipe to the edge of the plastic. Add a T fitting at one end of the pipe and put 2 12" stubs in the side holes of the T fitting and you can roll-up the sides for venting. You'll have the height you need for trellising and the ventilation you'll need. You won't need the ropes for the plastic either. I guess I wouldn't be comfortable with 6' spacing of the hoops unless you're pretty protected from wind and heavy snowload.
William H. Shoemaker
University of Illinois, Crop Sciences
St Charles Horticulture Research Center
535 Randall Road, St Charles, IL 60174
630-584-7254, wshoemak at illinois.edu
From: market-farming-bounces at lists.ibiblio.org [market-farming-bounces at lists.ibiblio.org] on behalf of Etienne Goyer [etienne at lejardinduvillage.ca]
Sent: Saturday, February 18, 2012 12:19 PM
To: market-farming at lists.ibiblio.org
Subject: Re: [Market-farming] For those who have built tunnels using Johnny'shoops bender
The plastic is not attached to the ground, so you just raise the side.
According to Johnny's, the friction of the rope is sufficient to keep
the plastic up, but in my experience on other farms, it is not. So I
plan to use clamps to hold the plastic to the bow at the proper height.
That is one of the potential problem of raising the height of these
tunnels. Side ventilation may not be sufficient, and too much warmth
might accumulate at the top. I will have to think about this.
MAsteveIN, you have a really weird email quoting style! :)
On 12-02-18 01:06 PM, MAsteveINE wrote:
> How are these guys ventilated?
> Hello everyone,
> I bought Johnny's "Quick Hoops" high tunnel bender. Their instruction
> manual is really good, and I like their design. I am planning on
> building two 100' tunnels this spring. I have two questions for those
> who have built similar tunnels.
> First, Johnny's tunnel are 7' high in the middle, which I find is a
> little low for trellised crop. I would prefer something closer to 10'
> high. I am thinking that, instead of cutting the 6' post in half, I
> would use the full 6' length of the post, leaving 4' sticking out of
> ground (instead of 1'). I This would make a kind of straight "side
> wall" 4' high, on which the bows would rest. This would obviously cost
> twice as much in post, but I think it is a fair trade off. Have someone
> done something similar, and if yes, is the structure sound?
> Secondly, how wide have you set the bows? The example in the manual as
> a bow every 4'. I am planning on using three purlins (one in the
> center, and two to attach the trellises to), so I am thinking the
> structure will be quite solid indeed. I am thinking of having one every
> 6' instead. Would that be enough? My only worry is water accumulating
> on the plastic above the purlins.
> Beside, what was your experience? Any tips to share?
> Etienne Goyer - Le Jardin du Village
> Market-farming mailing list
> Market-farming at lists.ibiblio.org
> Market Farming List Archives may be found here:
> Unsubscribe from the list here (you will need to login in with your email
> address and password):
Etienne Goyer - Le Jardin du Village
"Changer le monde, une betterave à la fois"
Market-farming mailing list
Market-farming at lists.ibiblio.org
Market Farming List Archives may be found here:
Unsubscribe from the list here (you will need to login in with your email
address and password):
More information about the Market-farming