RE: Watering vines
Rebecca,
Agricultural oils are minerals and derivated from parafin and belong to two
kinds: summer and winter, the summer oils can be used when the plants have
leaves. Let me print for you the Basic Cornell Spray: For Control Of
Blackspot & Powdery Mildew
This was developed by Cornell University for foliar diseases on roses. Do
not substitute vegetable oil spray for the summer weight agricultural oil,
it doesn't emulsify in suspension when water is added. The lightweight oil
also is an added protection against disease and pests. Another tip I have
learned is to spray this in the evening, around or just after supper time.
Do not spray this in the hottest part of the day:
2tbs Horticultural Oil (Sunspray or Volk Oil)
1 tbsp of baking soda
Add to 1 gallon of water and spray leaf surfaces LIGHTLY, not to dripping.
Reapply every two weeks.
That is from this link: http://gardengal.net/page11.html
Carlos
----- Original Message -----
From: Rebecca (Rebkin) Steward <rebkin@pcmagic.net>
To: <pumpkins@hort.net>
Sent: Saturday, March 22, 2003 5:12 PM
Subject: Re: Watering vines
> Thanks Carlos-
>
> ......."The ratio of potassium or sodium bicarbonate is 1-2 % in
> water with another 1-2% of summer oil" What's summer oil??
> Rebecca Steward
> Martinez, CA
> ----- Original Message -----
> From: "Carlos" <paskinel@telefonica.net>
> To: <pumpkins@hort.net>
> Sent: Friday, March 21, 2003 11:43 PM
> Subject: RE: Watering vines
>
>
> > Rebecca,
> >
> > Powdery mildew is a fungus, exterior fungus that penetrates a little in
> the
> > leaf structure. The ratio of potassium or sodium bicarbonate is 1-2 % in
> > water with another 1-2% of summer oil. You should spray it once every
two
> > weeks in late July-mid Auguest and once a week during late
> > Auguest-September. Soluble seaweed at the end of each other irrigation
> like
> > foliar spray it said to help us a lot. Also to have the patch completely
> > clean of weeds is very helpful I mean, under the pumpkin plants and arou
nd
> > them too. But all the previous are just preventive, if the fungus gets
to
> > extend on the plant, you have to look for a sistemic spray like benlate,
> > quadris...
> >
> > Carlos
> >
> > ----- Original Message -----
> > From: Rebecca (Rebkin) Steward <rebkin@pcmagic.net>
> > To: <pumpkins@hort.net>
> > Sent: Saturday, March 22, 2003 6:54 AM
> > Subject: Re: Watering vines
> >
> >
> > > Hi all-
> > > On the subject of powdery mildew, I've had this problem in my patch
> every
> > > year and not just the pumpkins, everything seems to have it by summers
> > end.
> > > Zucchini, bean plants, even my sunflowers and giant zinnias all in the
> > same
> > > area. I am starting to think that the problem is A) too much shade &
B)
> > the
> > > problem is in my soil -I've yet to investigate testing for this in
> > soil..??
> > > any answers?? Another question I have , is powdery mildew a virus or a
> > > bacteria?? Any how, I addressed this issue at the recent growers'
> meeting
> > > in Elk Grove and one So. Calif. grower, treated powdery mildew by
> spraying
> > > the plants w/ plain baking soda and water, applied in a hose-end
> sprayer.
> > > Ratio of soda to water?? "about a cup or so, mixed w/ the water", he
> said
> > it
> > > helped get rid of the stuff and something about this sure made his
> plants
> > > healthier than usual....so, I will give it a try this year-- But I
> always
> > > use the soaker method to water after plants are up and especially
after
> > > flowers appear. I only over-head water seed beds until germination
> > > occurs,(Pumpkins are started inside in peat pots) then in goes the
> > soakers.
> > > I hope to hear more solutions or discussions on this problem w/ the
> > powdery
> > > mildew--I'll try just about anything. Thanks to all for your sharing
of
> > > experience.
> > > Rebecca Steward
> > > Martinez, CA
> > > ----- Original Message -----
> > > From: "Beth Rado" <rado1000@hotmail.com>
> > > To: <pumpkins@hort.net>
> > > Sent: Friday, March 21, 2003 4:55 PM
> > > Subject: Re: Watering vines
> > >
> > >
> > > > >...and get rid of powdery mildew. Well, it may help, but I found
it
> > > >will
> > > > >not eliminate mildew- .... You'll get it regardless of watering
> > > > > >technique.
> > > >
> > > > I have a note on my pumpkin calendar to spray for powdery mildew no
> > later
> > > > than August 5. It usually starts here between August 5th & 10th,
and
> is
> > > > thriving by the 15th. Last year I used Daconil on July 29, and saw
> zero
> > > > powdery mildew for three weeks - well past the time it usually gets
> bad.
> > > > For a variety of reasons, I didn't spray again, but I believe if I
had
> > > > sprayed regularly the p.m. could be prevented. (Isn't that what
> > Pumkinguy
> > > > always said??)
> > > >
> > > > You have to remember to shake the Daconil way more than most
products
> > > > (thanks, Dale!) and most importantly, spray BEFORE you see the
mildew.
> > > Once
> > > > it starts, you will never get ahead of it.
> > > >
> > > > Beth
> > > >
> > > > _________________________________________________________________
> > > > The new MSN 8: advanced junk mail protection and 2 months FREE*
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> > > >
> > >
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