Soil Test Results

Soil Test Report Analysis for P1-36

Field: P1-36

Sample ID: P1-36-V1
Lab Number: 20339
Date Reported: 03/12/2025
Location: St. Johns, MI
Report For: Twisted Bit Compost

Key Soil Properties & Nutrient Levels

pH (Soil/Buffer)8.2Alkaline – High pH can reduce nutrient availability.

Organic Matter (%)31.8Very High – Good for soil structure and water retention.

CEC (meq/100g)54.2High – Indicates good nutrient-holding capacity.

Macronutrients

Phosphorus (Bray-1 Equiv)2555Very High – No need for additional phosphorus.

Phosphorus (Bray P2)2569Very HighPotassium (K)1815Very High – No need for more K.

Magnesium (Mg)6500Very High – Excess Mg may affect calcium uptake.

Calcium (Ca)8.2% saturationBalanced – Good Ca levels.

Sulfur (S)31Adequate – No deficiencies.

Micronutrients

Zinc (Zn)55.8Very High

Manganese (Mn)42Very High

Iron (Fe)3Low – May need supplementation.

Copper (Cu)1.2Low – Could require amendment.

Boron (B)10.0Adequate

Cation Saturation (Nutrient Balance)

Potassium (K)12.2% (Target 3-5%) High – No additional K needed.

Magnesium (Mg)27.9% (Target 10-20%) High – May impact calcium availability.

Calcium (Ca)59.9% (Target 60-80%) Slightly Low – Consider minor Ca addition.

Analysis & Recommendations

1. pH Concerns: The soil pH is quite high (8.2), which could reduce availability of some nutrients like iron, manganese, and copper. Consider sulfur amendments or acidifying fertilizers if pH correction is needed.

2. High Phosphorus & Potassium: No additional phosphorus (P) or potassium (K) is required, as levels are already excessive.

3. Iron & Copper Deficiencies: Consider applying iron sulfate or chelated iron, and possibly supplementing with copper.

4. Magnesium Excess: Since magnesium is high, avoid Mg-rich fertilizers and ensure sufficient calcium for balance.

5. High Organic Matter: Excellent for soil structure and nutrient retention, but decomposition rates should be monitored.