Soil Testing Report Name of the laboratory (A&L) that conducted the soil analysis A&L’s client number for KCD Your name KCD contact person who submitted samples <strong>One page per soil sample</strong> – if you submitted 4 samples, you should have 4 pages <strong>Sample ID</strong> – This refers to the ID number you labeled your sample bag with. Important especially if you submitted multiple samples <strong>Percent Cation Saturation</strong> – the proportion of the Cation Exchange Capacity occupied by a given cation (an ion with a positive charge such as potassium, magnesium, calcium, or sodium). <strong>Organic Matter</strong> – A measure of the amount of plant and animal residue in the soil. Agricultural soils in our area range widely in organic matter from 4% to 15%. <strong>Nitrogen NO3-N</strong> – A measure of nitrate-nitrogen, a soluble form of nitrogen.  A fall nitrate-nitrogen test is an indicator of whether nitrogen applied earlier in the season was taken up by crops or not. <strong>The Weak Bray and NaHCO3-P</strong> tests both measure readily-available phosphorus. The Weak Bray test is valid with a soil pH under 7.5. The NaHCO3-P test is valid with a soil pH above 6.2 <strong>Potassium ppm</strong> – Parts per million of exchangeable potassium <strong>Magnesium ppm</strong> – Parts per million of exchangeable magnesium <strong>Calcium ppm</strong> – Parts per million of exchangeable calcium <strong>Sodium ppm</strong> – Parts per million of exchangeable sodium <strong>Sulfate-sulfur ppm</strong> – Parts per million of sulfate-sulfur <strong>Zinc, Manganese, Iron, Copper, Boron, Chloride</strong> – Not applicable <strong>CEC</strong> – Cation Exchange Capacity is a measure of the soil’s ability to hold nutrients such as potassium, magnesium, and calcium. Typical values for CEC range from 5 to 15 and tend to be higher in soils with high clay or organic matter content <strong>pH</strong> – A measure of the acidity of soil, most crops grow best with a pH of 6.2-6.8.  Agricultural soils in King County typically range from 5.0 to 6.5. See dolomite or lime section for recommendations on raising pH if needed A pH value of 7 is considered “neutral”. A reading lower than 7 indicates more acidic. A reading higher than 7 indicates more basic Buffer pH is a value used in calculating lime/dolomite recommendations Comment generated due to pH value below 6.2. For readily-available phosphorus see “Weak Bray” value <strong>Crop</strong> – Fertilization recommendations are given for the crop that you indicated with your soil sample submission based on existing soil nutrient levels <strong>Rate</strong> – Specifies whether fertilizer rates in the following section will be given in lb/acre or lb/1000 sq ft, based on your selection with soil sample submission <strong>Dolomite and lime</strong> – Recommendation for dolomite (for soils with less magnesium) and for lime (for soils with more magnesium). Check the product label of your liming agent for its score. This recommendation is based on a score of 100. In settings with established crops, it is preferable to make multiple applications over time, rather than making a single application of lime <strong>Gypsum</strong> – Only specified if your soil needs calcium and you don’t need to adjust the pH. <strong>Elemental Sulfur</strong> – May be recommended if soil pH needs to be lowered (uncommon in King County) <strong>Nitrogen</strong> – Recommended amount of nitrogen to add <strong>Phosphate</strong> – Recommended amount of phosphate to add <strong>Potash</strong> – Recommended amount of potash to add <strong>Magnesium</strong> – Recommended amount of magnesium to add <strong>Sulfate-sulfur</strong> – Recommended amount of sulfate-sulfur to add <strong>Comments:</strong> Lab comments are based on crop indicated with soil sample submission.