Fertilizing and Watering
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Subject: How much zinc is too much?
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From
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Location
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Message
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Date Posted
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Cornhusker007 |
Northeast Nebraska
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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.
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4/8/2014 3:08:39 PM
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Pumpking |
Germany
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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"! ;-)
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4/8/2014 3:37:14 PM
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VTSteve |
South Hero, VT
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Did you use a galvanized tool to take your soil test? I get high zinc contamination levels from my cheap core sampler.
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4/8/2014 6:36:30 PM
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Cornhusker007 |
Northeast Nebraska
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No sir its a JMC stainless probe I use for all my agricultural samples.
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4/8/2014 9:26:58 PM
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cojoe |
Colorado
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John my soil minerals book says ideal soil will have a 1:10 zinc to phosphate ratio up to 50ppm zinc.
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4/9/2014 1:04:02 AM
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WiZZy |
President - GPC
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Hey CoJoe... rebar and concrete wire contribute to the Z in the soil Im thinking...
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4/9/2014 9:47:31 AM
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WiZZy |
President - GPC
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What aboutl implements on TractorZ and tillerZ?
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4/9/2014 9:48:25 AM
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VTWilbur |
Springfield, VT
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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.
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4/9/2014 7:49:18 PM
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Total Posts: 8 |
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