I am reading Steve Solomon's book The Intelligent Gardener. However, I have two problems with it. First and foremost, I apparently got the wrong test for his method. I got a modified Morgan extractable. And I don't want to buy ANOTHER soil test. Can anyone here help me use his methods with this test?
Secondly, he seems (as most authors do) to assume that his methods are THE only methods. I agree with him as to the problem; lack of soil mineral balance. I agree with him as to the desired end; a well balanced soil. And his "ideal" soil target seems about right.
However, I don't like the means he uses to get from here to there; importing lots of expensive and somewhat dubious materials every year, and getting lots of complicated soil tests done. And of
course, he is using standard vegetable growing.
Could I use the Eliot Coleman method instead? Eliot Coleman puts lime (if necessary) phosphate rock (if necessary) greensand (if necessary) and kelp into his
compost piles, and them applies the compost to his
land. He (and others) say that if the soil is properly balanced, there will be no pests and diseases, so I would know when I had got to the right point.
Besides, it seems to me that my land only needs some kelp, organic matter, and nitrogen. What do you think? Or was this test useless because of the high lime in my soil?
Here are the results. I live in Denver, CO.
Soil pH (1:1, H2O) 7.8
Modified Morgan extractable, ppm
Macronutrients
Phosphorus (P) 71.7
Potassium (K) 1011
Calcium (Ca) 6641
Magnesium (Mg) 448
Sulfur (S) 63.7
Micronutrients
Boron 1.7
Manganese (Mn) 10.3
Zinc (Zn) 7.6
Copper (Cu) 1.0
Iron (Fe) 3.1
Aluminum (Al) 9
Lead (Pb) 2.9
Cation Exch. Capacity, meq/100g 39.5
Exch. Acidity, meq/100g 0.0
Base Saturation, %
Calcium Base Saturation 84
Magnesium Base Saturation 9
Potassium Base Saturation 7
Scoop Density, g/cc 1.07
Comments
values for phosphorus and potassium are above optimum. Only a source of nitrogen is necessary this year.
Avoid overfertilization. In addition to threatening
water quality, excessive nutrient applications can compromise plant health and
contribute to insect and disease problems.
See Reference "Fertilizing Guidelines" (below) for information regarding fertizer use in home gardens, lawns and landscapes.
The lead level in this soil is LOW. For more information about lead levels in soil, see our Soil Lead Fact Sheet.
When pH is greater than 6.8, Cation Exchange Capacity (CEC) tends to be overestimated.