Re: [tomato] Fungicides

Doreen Howard (
Sun, 7 Mar 1999 21:02:09 -0600

No.   Neem seed oil isnt' a sufficant like dormant and solar oils.  It's
highly diluted and should be mixed with a sticking agent--vegetable oil or
dish soap.  Of course, you want to apply it in early morning or late in the
evening, because anything will burn in the mid-day sun.  I never had a
problem with it in Texas, and our sun was blazing.  One of the biggest
commercial antique rose growers (Antique Rose Emporium in Brenhan, TX) uses
it on all their fields.  And, many soy and cotton farmers in Texas have crop
dusters apply it to their fields--in the early morning hours!  Hope this
-----Original Message-----
From: Olin <>
To: <>
Date: Sunday, March 07, 1999 7:59 PM
Subject: Re: [tomato] Fungicides

>Doreen - We don't use dormant oil sprays in the low desert in the spring
>summer because the sun heating the oil burns and damages the foliage.  Do
>you think we would have the same problem with neem oil?  -Olin
>-----Original Message-----
>From: Doreen Howard <>
>Subject: [tomato] Fungicides
>>About the use of fungicides and mycorrhizal fungi:  any soil drench is
>>to kill mycorr.  But, contact fungicides that coat plants and don't
>>penetrate the soil are OK.  I've found that neen seed oil works well on
>>tomato plants and roses.  And, I previously (until 7 months ago) gardened
>>the most fungi-riddled area of the country--on the hot, humid Gulf Coast
>>Texas in Zone 9b.  Blights, particularly, were the biggest enemies of
>>tomatoes.  A profalactic spray program with neem seed oil worked well in
>>keeping early blight (septoria) at bay.
>>Doreen Howard
>>Zone 5b--Central Illinois