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Soil Preparation and Analysis

Subject:  what's tying up my Potassium..CEC is low..PPM hi

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Alexsdad

Garden State Pumpkins

Soil test report from Rutgers:

soil type: Silt loam, drainage good
PH: 6.75
Lime requirement index: 7.70 (Adams-Evans method)

Macros in Lbs per acre and rutgers eval ofit

Phos: 108 optimum
pot: 313 above opt
mag: 766 above opt
calcium: 6465 above opt

micros in PPM

zinc: 18 adequate
copper: 3.9 adequate
Manganese: 52 adequate
boron: 4.6
iron 325 High

salts 0.15 mmho/cm satisfactory
OM 21.78% 12.63% Organic Carbon

recommendationss
do not apply lime
soil tests indicate high P and K add 13 lbs of 15-0-0 and 5 lbs of 0-20-0
apply per 1000 sq ft....6 inch into soil

CEC's rec levels
CEC 22.2 meg/100g 100%
Ca 16.2 73% 65-76 %
Mg 3.2 14% 10-15%
pot .4 2% 4-7 %

I believe the iron readings are high dur to a liquid iron application I used to curtail moss that was growing in the patch and might have skewed the readings. What I don't get is that although my patch shows above optimum PPM the CEC ratings on K are low...Anybody with any suggestion would be appreciated....can I foliar feed the K....

11% of my base saturation is tied up somewhere??? could it be in the micro's??
Thanks for your help.
Chuck
Mg

6/11/2008 10:45:59 AM

Tremor

Ctpumpkin@optonline.net

Did a tissue test substantiate this potash concern? If so, foliar K is a good idea.

6/11/2008 3:34:38 PM

Alexsdad

Garden State Pumpkins

I haven't done a tissue test Steve...Just had them redo the test evaluation to give me the CEC's and they came back with these numbers...Had I just left it with the PPM readings and not the CEC's done I would have been fat dumb and happy knowing the the soil was fully charged...but when I saw the K as showing low in it's CEC rating I became concerned....and the totals of the CEC percentages only add up to 89 %...Not really knowing enough about the consequences just thought I'd find out if anybody saw a reason for the tie up. Tissue test will be expensive at a time that the money is tight...Plants all look healthy and are running since the heat came through.

6/11/2008 3:50:42 PM

UnkaDan

Chuck you're asking the wrong folks here,,,call the lab that did the tests

6/11/2008 7:00:32 PM

Boy genius

southwest MO

Your Fe works out to 1.2 meq/100g or 5.5% of the base saturation. The rest is likley H+... Put down some kelp or a touch of green sand. Micronized kelp powder is very high in K and would certianly provide other goodies as well.

6/11/2008 7:59:00 PM

Alexsdad

Garden State Pumpkins

Thanks guys for your inputs...I have soluable Kelp for foliar feeding with the molassess and fish...just not sure about these things.

6/11/2008 8:52:46 PM

*Old *Man*

Sheridan . NY

a 0 0 6 w- seaweed

9/7/2008 9:51:26 PM

Total Posts: 7 Current Server Time: 12/25/2024 8:26:08 AM
 
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