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[compost_tea] Pre-emergents



Any experience with pre-emergence and how they affect the bacterial and fungal populations within the soil after the product is applied… products such as casaron, Ronstar or Surflan?  Information about the timing of applications… such as CT before, during or after applications of the above type products.

Thanks for input.

 

Brett

-----Original Message-----
From: soilfoodweb@aol.com [mailto:soilfoodweb@aol.com]
Sent:
Tuesday, March 11, 2003 2:43 AM
To: compost_tea@yahoogroups.com
Subject: Re: [compost_tea] Compost tea brewers

 

The important point is the words I said in the last message - GOOD tea.  A tea with adequate sets of organisms.  Adequate organisms numbers are on the SFI report.  We have tested these levels of organisms, and have shown in our testing that 5 gal per acre is adequate.

Then you need to know the right application timing.  If you have disease present in the system, you need to apply weekly until the plants are protected and disease not longer can reach the plant.  Then back off to fewer applications.

What if someone applies herbicide?  Then you have just wiped out the orgnaisms and have to reapply.  What about a fungicide?    Insecticide?  They all harm the organisms, and you would have to reapply the organisms. 

We were just looking at data tonight where the grower said they had never applied any pesticide, but the organisms data kept saying otherwise.  We then looked at the operational log info, and right there it was - sulfur spray.  What do people think a sulfur spray, or a copper spray are for? 

Elaine
President, Soil Foodweb Inc.
www.soilfoodweb.com
SFI
Oregon, USA
SFI Australia
SFI New York
SFI Europe
SFI New Zealand


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