Can this be accurate- Soil Test

foodeefish(z8SC)January 26, 2014

I just received my Vegetable Garden Soil test from Clemson University and their suggestion is to add NO lime, and to only add 6#s Calcium Nitrate per 1000 Square Feet.
I was going to add composted oak leaves but now I don't know what to do.

Here are the results:

PH- 7.4

lbs per acre

Phosphorus(P) - 166 Excessive
Potassium(K) - 430 Excessive
Calcium(Ca) - 9868 Excessive
Magnesium(Mg) - 1081 Sufficient
Zinc(Zn) 336 Sufficient
Maganese(Mn)-121 Sufficient
Boron(B) - 5.7 Excessive
Copper(Cu) - 0.2
Sodium(Na) - 90

Any ideas as to what I should do or if this can be accurate? PH 7.4 and don't add any Lime?? I thought Lime decreased the PH and that I needed a PH of 6.8-7.2 for vegetables? If I add composted leaves won't that just raise the PH even higher?

Thank you for reporting this comment. Undo
wayne_5 zone 6a Central Indiana

If your soil test is fairly accurate, you should not add calcium lime as that raises the ph. Sulfer lowers ph. I don't know how to lower boron except by water leaching.

Leaves likely are neutral to slightly acidic....ok.

    Bookmark   January 26, 2014 at 1:24PM
Thank you for reporting this comment. Undo

Composted oak leaves should add vegetable fiber, also called organic matter, to the soil, and this is usually a good thing. It is possible to have too much organic matter in the soil. Have you grown vegetables in this plot before? If so, what were the results? Based on the soil test results, I agree, no lime should be added. If you think that nitrogen is needed, then ammmonium sulfate will provide nitrogen, and also lower soil pH. However, the indicated pH = 7.4 is good for growing vegetables, and I might not do anything to lower it, if it were my garden.

    Bookmark   January 26, 2014 at 4:50PM
Thank you for reporting this comment. Undo

Looks like the place has been overmanured for a long time. Yes, add leaves only for five years, and urea or other N only fertilizer.

    Bookmark   January 26, 2014 at 5:34PM
Thank you for reporting this comment. Undo

I guess the chicken manure the last couple of years may have been too much. I have plenty of leaves composting and I just added some alfalfa pellets as greens to get it composting.

I'll wait a few weeks and add them to the garden.


    Bookmark   January 26, 2014 at 7:36PM
Thank you for reporting this comment. Undo

A soil pH of 7.4 is not really all that far off the optimal 6.0 to 6.8 pH so it is not something that I would be too concerned about. Lime, Calcium Carbonate, is used to raise a soils pH not decrease that pH.
What is the amount of organic matter in that soil?
How much chicken manure, over how much area, has been added?

    Bookmark   January 27, 2014 at 6:28AM
Sign Up to comment
More Discussions
Moldy fruit and breads okay for compost bin?
Are these okay to add to the bin? Won't the mold spread...
bread in compost
New to composting and confused now. What is wrong with...
How quickly can I lower pH of soil in order to plant acidic plants?
I'm hoping someone can help me with my dilemma! I...
Soil Test Report questions-please help.
Hello all you kind folks on this site. I have received...
Patio Composting
Would like to start composting in a small patio area...
© 2015 Houzz Inc. Houzz® The new way to design your home™