[NAFEX] required time to set Imidan before rain

Ed Fackler ed.fackler at gmail.com
Sun May 25 08:25:19 EDT 2008


     To deal with the situation below regarding the efficiency/adhesion of
Imidan (and others) I'd suggest the use of a sticker/spreader/UV inhibitor.
Nu-Film 17 was my choice years back and there may be others which have the
same capacity to do the job.

     I could easily get 14 days of protection from Imidan using it.


On Sun, May 25, 2008 at 7:28 AM, Alan Haigh <alandhaigh at gmail.com> wrote:

> This question is addressed to the experienced applicators out there.
> Unusually cool spring weather has altered and extended bloom period
> considerably here in Z.6, SE NY.  It creates quite a dilemma on the decision
> of when to put down first insecticide application when the first apples to
> set on a given tree are being ravaged by curculio while there are still
> unopened blossoms on the same tree.
> In the past I've been able to wait until the latest flowering apple
> varieties drop their petals to make first Imidan application to all species
> in mixed fruit orchards and have avoided serious curc damage even on the
> earliest plums.  To further complicate matters, frequent showers are
> limiting the opportunity to set spray.  I need at least an hour of good
> drying conditions following spray to have any confidence of adhesion.
> I'm not even sure this is enough time and I'm interested in the experience
> of some of you veterans on this issue.  How much setting time before rain
> seems to be required for Imidan?  How heavy a rain will erase the
> application before it sets?  I already know that mist and drizzle are fine
> but a specific number like 1/8th an inch would be useful. Thanks
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