RE: Roundup

I use Roundup to weed most of the iris beds. Since I have a small commercial garden, that amounts to about 30,000 square feet. I use a lot of care by having a low pressure in the tank and feather the spray trigger. I will even spray the interior of a clump. When I use 2 oz per gallon, I have some distorted blooms. When I use 3 oz per gallon, I have more distorted blooms and more distortion to the bloom. This year with most usage at 3 oz/gl, I probably had 100 to 150 distorted blooms on 1200 clumps. There was no obvious damage to the foliage. Weed control has been fair to excellent. I have dual 2 ft spaced rows with separation between clumps and 5' aisles.
 
 
I advised another garden owner who was having major weed problems on about 2 acres of irises to start using Roundup. He has inadequate separation between clumps in single rows with inadequate aisles. I don't believe he used the same spray control that I use. He had significant damage to the foliage. The damage was severe enough that the rhizomes were discarded. The cultivars were of minimal commercial value so no attempt was made to grow them a second year.
 
I have seen other gardens that were badly damaged by herbicides when label instructions were not followed. My advise would be to follow label instructions and treat a test bed for a year or two before making any drastic changes to a herbicide use program.
 
Harold Peters
Beautiful View Iris Garden
2048 Hickok Road
El Dorado Hills, CA 95762
h*@directcon.net  www.beautiful-view-iris.com
-----Original Message-----
From: alhbee@aol.com [mailto:alhbee@aol.com]
Sent: Monday, July 19, 2004 8:23 AM
To: sibrob@yahoogroups.com
Subject: Re: [sibrob] Digest Number 1101

Friends own a greenhouse complex and sell iris they pot up. The boys gave about 6 pots a full dose of commercial Roundup. The father was upset.
 
I said I'll take them home and baby them because we just had a discussion about the affects of Roundup. One year later I'm returning 5 pots of Wabash and Goodwill Messenger to him with no ill affects. I kept a pot of Goodwill Messenger as I didn't have it. A year later it died of soft rot. There you go, invincible to Roundup and a patsy for rot.
 
Al Bullock 


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