From

Location

Message

Date Posted

Northeast Nebraska

I got my soil test back and found it outrageously high (imo) in zinc 45.6 ppm. Is this level toxic to pumpkins? I know my sweet corn really loves that area.

4/8/2014 3:08:39 PM

Germany

My PB (929.5) grew on a 360 sqft plant, an outdoor plant in the rather cold Germany, and soil pH was 5.8 and Zn was 88 ppm and K/Mg/Ca cation saturation was 10/10/60 %.

Now it´s up to you to make a guess what could happen upon improving soil pH (from 5.8 to close to 7), upon improving cation saturation (to maybe 7/15/75 %), upon growin bigger plants (maybe 500-600 sqft) and upon growing in better climate...something like another 150 lbs with every parameter brought from my far from ideal start to the significantly better values? Hence, I would think your 45.6 ppm zinc shouldn´t cause you any sleepless nights.

"zinc positive"! ;-)

4/8/2014 3:37:14 PM

South Hero, VT

Did you use a galvanized tool to take your soil test? I get high zinc contamination levels from my cheap core sampler.

4/8/2014 6:36:30 PM

Northeast Nebraska

No sir its a JMC stainless probe I use for all my agricultural samples.

4/8/2014 9:26:58 PM

Colorado

John my soil minerals book says ideal soil will have a 1:10 zinc to phosphate ratio up to 50ppm zinc.

4/9/2014 1:04:02 AM

Little-TON - Colorado

Hey CoJoe... rebar and concrete wire contribute to the Z in the soil Im thinking...

4/9/2014 9:47:31 AM

Little-TON - Colorado

What aboutl implements on TractorZ and tillerZ?

4/9/2014 9:48:25 AM

Springfield, VT

The level is high but probably not a problem, ph is a factor with many metal issues. A ph above 7 will bind up some zinc below 7 releases more of it to plants. Also the other metals and organic matter will effect the availability.

4/9/2014 7:49:18 PM