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  • From: "William H Shoemaker" <wshoemak AT illinois.edu>
  • To: "'Market Farming'" <market-farming AT lists.ibiblio.org>
  • Subject: Re: [Market-farming] manures/GAP training
  • Date: Tue, 2 Mar 2010 10:08:08 -0600

There are differences of opinion on what standards GAP uses. Primus Labs is one of the largest, if not the largest GAP certifier, operating out of the Salinas Valley, CA. I attended a workshop headed up by their folks a month ago. My recollection is that they were not comfortable with any use of manure, aged or not. However, keep in mind that these are certifiers, not lawyers or regulators. I’m not aware of any law regarding use of manure, other than organic certification. That may soon change, and if you participate in USDA programs, the issue may be moot. But if you are not required by your market to use GAP, you may not need to comply with any of them. However, you may not want to risk liability if your customer gets the flu. It’s a social issue, not an ag issue.

 

Bill

 

 

 


From: market-farming-bounces AT lists.ibiblio.org [mailto:market-farming-bounces AT lists.ibiblio.org] On Behalf Of KAKerby AT aol.com
Sent: Tuesday, March 02, 2010 9:15 AM
To: market-farming AT lists.ibiblio.org
Subject: Re: [Market-farming] manures/GAP training

 

Regarding the statement below about manure-to-harvest intervals, I'd be curious to know how many folks on this list have attended GAP training, and/or how many people are putting GAP into use.  When I attended an intro session here last month, the recommendation is now 210 days between application of manure and harvest of ANYTHING - roots, leaves, fruits, whatever.  That sure set us back.  We decided that knowing the new guidelines, we couldn't in good conscience expand into a field that would clearly fall between the old 125-day and new 210-day withdrawal period.  One whole field of production - removed from consideration in 2010.  Anyone else weighing those options?
Kathryn Kerby

Frog Chorus Farm

Snohomish, WA

 

In a message dated 3/2/2010 7:07:40 A.M. Pacific Standard Time, organic87 AT frontiernet.net writes:


On Mar 1, 2010, at 1:28 PM, sarah wiederkehr wrote:

> be careful when using compost or manure as a heat source in a cold 
> frame. If not managed properly and too much ammonia is released, you 
> can harm your plants. I lost all my tomatoes one spring due to 
> ammonia toxicity from using manure as a heat source- it was too 'hot'.
>
>
I'd also consider the current recommends to not use fresh manure 
closer than 90 days to harvest if the edible portion of the crop 
doesn't touch the soil, or 120 days if it does. This would work out 
all right for some crops but not others, I think.


-- Rivka; Finger Lakes NY, Zone 5 mostly
Fresh-market organic produce, small scale



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