Re: Clopralid (Alligare)
iris@hort.net
  • Subject: Re: Clopralid (Alligare)
  • From: D* A* <a*@gmail.com>
  • Date: Wed, 29 May 2013 12:18:40 -0500
I have to wonder whether all these chemicals are part of the problem bees
are experiencing...

jus' sayin.


On Tue, May 28, 2013 at 3:37 PM, Phloid <phloid@bellsouth.net> wrote:

> Linda has talked about how slow acting clopralid appears to be. Linda or
> others, any indication that at labels rates some weeds are suppressed for
> awhile then recover? ("Label rate" over top Iris, of course, being
> hypothetical since Iris isn't on the label.) Clovers are the ones I wonder
> about the most since they are particular PITAs for me. White clover has
> multiple ways of resisting control and tormenting me. The fact that it
> germinates all season long (for me anyway), rather than in seasonal spikes
> (like vetch, many clover and medics) is one of the ways. As I read
> clopralid has residual effect on legumes, but in warm humid soil
> conditions, like Linda and I have, is half life is not all that long. Makes
> me wonder just how many times a year I'd have to apply it even if it worked
> well at first.
>
> I am turning old fallow pasture into garden beds so I am dealing with lots
> of different weeds and a huge seed store. Glyphosate, pendimethalin (e.g.
> Pre-M) and hand-weeding keeps things to the point of keeping my sanity. I
> think pendimethalin (labeled for use over top Iris) does a reasonably good
> job considering the diversity of weeds I have but there are some that it is
> not very effective on, most legumes being among them. (Guilty of not
> reading the label well enough and thinking the stuff wasn't doing it's job.)
>
> Anyone have experience with isoxaben (e.g Gallery) preemergent? I read it
> is supposed to have pretty good control of clovers and medics and an
> application lasts several months. Vetch not on the list but if it controls
> white clover and medics - me wonders. And it is labeled for use over the
> top of Iris pumila 'yellow' and Iris siberica. Would chance say most
> bearded should hang - but that's unsubstantiated.
>
> If isoxaben did the trick on clovers and some other groups named on the
> label, it plus pendimethalin would pretty much leave me totally
> uninterested in clopralid and the intrigue that goes with it.
>
> Shaub
> SW NC, Z6b
>
>
> On 5/26/2013 8:19 AM, Linda Mann wrote:
>
>> After hearing others say they have used it over irises with no problems,
>> I used it this year.  Very slow acting, but no problems for the irises that
>> I could tell. no apparent negative impact on growth or fertility.
>>
>> The constant heavy rain is another story....
>>
>> The three groups of broadleafs it supposedly works well on are composites
>> (asters, wild lettuce, daisies, etc), legumes (clover, vetch, beans etc)
>> and solanums (horse nettle, tomato, potato, pepper), and to a lesser
>> extent, dock and sorrel (I guess that also means spinach & chard).  So lots
>> of warnings about persistence and potential effects on some broadleaf
>> veggies for 2 yrs.
>>
>> It definitely knocked back the vetch, I thought it hadn't done anything
>> to the composites, but now that they are tall and trying to bloom, they are
>> starting to look really bad, & I didn't have the heart to spray the
>> daisies. yet.  Some of the clover I sprayed is looking a little ill, but
>> not dead yet, and the sorrel looks totally unaffected.
>>
>> Weather was really cool and wet when I sprayed, so will see if some spot
>> treatment of sorrel, dock and clover in sunny weather will work better, or
>> if maybe they need fall treatment?
>>
>> I feel a bit guilty using this stuff, but I've reached the point where I
>> either spray some of the weeds, or give up trying to grow so many seedlings.
>>
>> The weather casters are talking about this year's rainfall in relation to
>> the annual record of 90+ inches here!   When I was growing up, the 30 yr
>> annual average was ~55 inches.  Lately, thanks to a 5 yr drought, the
>> average has been closer to 40 - I think the lowest was 32?  Average really
>> doesn't tell much!
>>
>> Linda Mann  east TN zone 7b,
>>
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