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Oxford, MA

This year I'm using Subdue (granular systemic fungicide) & Warrior T (systemic insecticide) Is it ok to also spray Sevin for SVB and Daconil or Benlate for fungus? Thanks for your help. Paula

5/28/2003 5:43:12 PM

Ctpumpkin@optonline.net

Paula,

Subdue is a good fungicide for soil borne diseases such as Pytophthora & Fusarium.
But it won't do much for foliar diseases such as Powdery Mildew. So if PM is a problem for you like it is for us here in humid CT, look to add a foliar fungicide to the mix later in the summer. I'm mixing Mancozeb (contact) or Manicure/Daconil (clorothalonil) with Eagle/Nova (a systemic) once the humidity gets going.

Generally speaking. Contact fungicides last longer than systemics & offer better preventative properties. Systemic fungicides (such as Benlate) work better if infection has already taken place. Like most of the so-called systemic fungicides, Belate, Eagle/Nova, Rubigan, Bayleton, ProStar, etc,,,,the extent of vascular movement is quite minimal. At best, these should really be called "local penetrants".

Subdue & Haritage/Quadris are the only real systemic fungicides. Though they differ widely in use & mode of action.

Warriot T (like Sevin) is a contact insecticide. Good stuff. But if insects do sneak by the contact sprays, a soil applied (or foliar for that matter) insecticide like Orthene or Merit is a good insurance policy. This way the escappees will still pick up a lethal does once they begin feeding on the plants.

All of the items you listed are compatible in a spray program & most should be able to be tank mixed together if we are careful about checking labels & using all of the spray that is mixed before stowing away the sprayer.

Hope I didn't just confuse things even more. LOL

Steve

5/29/2003 7:32:21 AM

Ctpumpkin@optonline.net

Correction!!! Orthene is not labeled for soil application!

5/29/2003 7:33:59 AM

Oxford, MA

Tremor,it was my understanding that Warrior T was a systemic insecticide??? I have used 75% Merit for the last two years with good results-maybe I won't change-why fix something that's not broke. Thanks for the info. Paula

5/29/2003 8:46:56 AM

Ctpumpkin@optonline.net

Warror T is a third generation synthetic pyrethroid. All of the pyrethroids are contact. That's probably why this combination is so good. That combo has been the back bone of our spray program here too. Though this is the first year back to pumpkins since 2001` seriously. And our first year ever with AG's. Given their finicky nature, I'm not gambling on any significant changes either. They performed very well with Burpee Prizewinners - Steve

5/29/2003 9:45:04 AM

Montoursville, PA

Paula....I have heard it discussed that we use Merit and Warrior T or another equal. With no further help it would maybe appear the Warrior T could be like Merit. I can see how that would easily be misunderstood in the learning process. Steve is good at helping us all grow and learn.

5/30/2003 1:06:31 AM