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Avatar for hazelnut
Nov 13, 2015 5:28 PM CST

Charter ATP Member

Suggests waiting 24 hours after rain/irrigation to avoid crop contamination.
Avatar for Shadegardener
Nov 13, 2015 5:59 PM CST
Name: Cindy
Hobart, IN zone 5
aka CindyMzone5
Celebrating Gardening: 2015 Plant Identifier
Hmm - wondering if this problem is less of an issue in small home gardens?
Only when the last tree has died and the last river has been poisoned and the last fish has been caught will we realize that we can't eat money. Cree proverb
Avatar for hazelnut
Nov 15, 2015 5:21 PM CST

Charter ATP Member
The tests were done in commercial spinach fields, but rain is rain. it does make you wonder.
Dec 9, 2015 7:32 PM CST
Name: Rick Corey
Everett WA 98204 (Zone 8a)
Sunset Zone 5. Koppen Csb. Eco 2f
Frugal Gardener Garden Procrastinator I helped beta test the first seed swap Plant and/or Seed Trader Seed Starter Region: Pacific Northwest
Photo Contest Winner: 2014 Avid Green Pages Reviewer Garden Ideas: Master Level Garden Sages I was one of the first 300 contributors to the plant database! I helped plan and beta test the plant database.
Maybe this hints at the actual mechanism we should focus on, rather than "rain":

"In total, 1492 samples comprising of water, leaf and fecal matter were collected for the analysis."

I've read people saying they drive past commercial fields with workers taking a dump right in the field.
Any home gardeners who do that should not harvest right after rain!

Or, if the fields were recently manured with raw manure, I would hope they would have mentioned that in the paper! But I think there are federal regs about how long you have to compost before applying manure.

Having mulch under leafy crops always sounded smart to me.
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