aphid control was Cyanella seedling advice

Rimmer oldtulips@gmail.com
Tue, 18 Feb 2014 16:40:04 PST
Hi Brad 
Thanks all for you help

the Daconil was misted on the plant and it burned under the hot T-5 lights, that was my first day lesson with T-5s . i quickly added a fan and turned off 4 of the lights. 

will Daconil stop moss or green slime growth in germination boxes of damp peat with tiny streptocarpus seeds?

Rimmer


On Feb 18, 2014, at 7:20 PM, Brad King <brad@alpinepfl.com> wrote:

> Hi Rimmer, 
> 
> Firstly Daconil is a fungicide. If you are using a liquid or flowable
> formulation there are both oil base products and water based products. If
> you are getting phytotoxicity it is probably the oil carrier. It will be
> related to either the concentration of the solution or rate of application,
> especially on tender or young or sick plants. (Did you give a quick misting
> or did you apply to a point of run off?) Daconil is a great fungicide if you
> need one. Don't give up on it. If you need to use it in the future and are
> concerned about burn, apply it in the evening or on a cloudy day. If it's
> under lights turn the lights off for a period of time.
> 
> Same thing for the insecticide Merit or Admire. There are many different
> formulations of this insecticide. It's hard to say if the rate is OK. These
> products are used as a soil drench in many commercial situations. It is
> possible to damage the plants with over applying a drench as well. It is a
> systemic and is taken up by the plant. The plant has to deal with the
> chemical in its system. 
> 
> I hope this helps you out . Brad.
> 
> Ontario Canada, Zone 5b
> 
> Warm 0 C/32 F and 6 more inches of snow today. 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> aphid control was Cyanella seedling advice
> Rimmer (Tue, 18 Feb 2014 09:56:18 PST)
> 
> on advice of someone directly in hopes of ending the aphids i have soaked
> all my pots with a Merit based insecticide (Bayer Tree and Shrub) - 1 tsp
> per 1 quart, is this too strong a solution?
> 
> the aphids came with Oxalis callosa and O. obtuse - i tried Daconal which
> scorched the Oxalis leaves under the T-5 lights so i used the insect soap
> which does very little. 
> 
> 
> 
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