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soil testfor blueberries

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From: Pat Reband
City:
Morton Grove, IL
I too expected some recommendations with my soil test from AgriEnergy Resources. I recall previously (some time ago) I did get a list of recommendations with the results, although I don't remember which lab I used.

My garden now includes 4 blueberry plants and I wanted to be sure they have a good chance to grow. I see the ph is too high but I'm not sure of the other elements. Can you offer any comments? Thanks, Greg.

Organic matter 11.2 (v. high) lbs/A Nitrate 56 P1 Phosphorus 76 (v. high) P2 Phosphorus 185 (v. high) Potassium 394 (med) Calcium 5951 (med) Magnesium 14389 Optimum-VHigh) Sodium 47 Soluble Salts 0.5 mmhos/cm Excess Lime Rt L pH 6.7 C.E.C. 23.9 meq/100g

Base Saturation desired %K 2-5% 2.3 %Mg 12-18 27.9 %Ca 65-75 69.3 %H 0-12 0.0 %Na <1.5 0.5

 
Extension Message
From: James Schmidt
Extension Specialist, Home Horticulture/4-H
Department of Crop Sciences
schmidt1@illinois.edu
Organic matter is high, which is excellent as this allows for better nutrient uptake and plant growth. Phosphorus levels are high, and usually are with many Illinois soils. Additional P wouldn't be needed, as well as any potassium. Calcium and magnesium levels are in a good ratio. A proper calcium level helps the soil to remain loose and workable. Soluble salts are in a very safe level for growing anything. The high CEC relates to the high organic matter, and I'm assuming clay soil. Nothing is amiss other than the soil pH which you noted. Blueberries prefer a pH much lower down to 4.5. To achieve this, you would need to add 5 lbs. of sulfur per 100 sq. ft. Sulfur does not act quickly and often takes several months. Since you have 4 plants, the amount will probably be less. You might want to wait until fall to apply this.

 
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