Thank you for inquiring into Perry Laboratory. The services provided by Perry Laboratory are intended to assist in achieving the best growing conditions for your plants. The soil that your plants occupy is the basis of how well they will grow. By providing the optimum growing conditions in your soil, you are giving your plantings an excellent opportunity for thriving. We offer a variety of analyses for testing your soil, water and plants. Our emphasis is on plant nutrition and soil fertility. The analyses you may require will depend upon the situation that is present. For some situations, we suggest the following:
Situational Test Packages
Installing or remodeling a landscape, turf area, vineyard, or orchard.
Imported “topsoil” evaluation.
Horticultural Appraisal Package with Recommendations.
Evaluating an organic plant growing medium
Organic Media Appraisal Package with Recommendations.
|Monitoring of a landscape, turf area, or vegetable garden to maintain or improve growth.||Basic Fertility and Micronutrients with Recommendations.||
|Diagnosis of a soil in a problem area.||Basic Soil Fertility, Salinity and Alkalinity Appraisal with Recommendations.||
|Follow-up testing of areas with emphasis on major nutrients.||Basic Soil Fertility Analysis with Recommendations.||
|Diagnosis of plant and soil in a problem area.||Basic Soil Fertility & Micronutrients, Plant Tissue Analysis with Recommendations.||
|Evaluation of a plant’s nutritional status.||Tissue Analysis Includes: N, P, K, Ca, Mg, B, Fe, Zn, Cu, Mn||
|Well water used for irrigation.||Irrigation Suitability with Recommendations. Includes: pH, EC, Ca, Mg, K, Na,Cl,CO3, HCO3, SO4, NO3, NH4, P, B, Zn, Cu, Mn, Fe, SAR, TDS.||
|Monitoring grape vineyards.||Petiole Analysis at bloom time. Includes: NO3,P,K,Ca,Mg,B,Fe,Zn,Cu,Mn||
Perry Laboratory Horticultural Appraisal Package
A group of laboratory analyses that provide a complete determination of the chemical and physical properties of a soil in order to evaluate the suitability for growing horticultural plants and what amendments may be necessary. These tests include:
- A measure of the soil acidity or alkalinity. The pH determines the availability of many plant nutrients.
- Electrical Conductivity (EC)
- A measurement of the amount of soluble salt present in the soil solution. This is a measurement of the sum of soluble salts and not individual salts. Depending on the type and amount, some salts provide fertility while elevated levels of others are toxic.
- Nitrate Nitrogen (N03-N)
- Readily available nitrogen in the form that is subject to leaching or loss from soil water movement. Nitrogen is one of the primary nutrients used most by all plants.
- Ammonium Nitrogen (NH4-N)
- Also readily available nitrogen, however it is less subject to loss by leaching.
- Phosphorous (P)
- A measurement of the available phosphorous, a primary plant nutrient. Phosphorous is especially important for root development and photosynthesis.
- Potassium (K)
- A measurement of the available potassium in the soil; another of the primary plant nutrients, used in amount second to nitrogen by most plants. Potassium is needed for plant water regulation, disease resistance and general vigor.
- Calcium (Ca)
- A measurement of the exchangeable calcium in the soil. Calcium is the first of the secondary plant nutrients. This is calcium held by the soil colloids, however is the amount available to plants.
- Magnesium (Mg)
- A measurement of the exchangeable magnesium in the soil. This is also one of the secondary plant nutrients. This is magnesium held by soil colloids, however is also the amount available to plants.
- Sulfate (S04)
- A measure of the available sulfate, a form of sulfur, in the soil. This is also in a form that is readily leached from the soil. Sulfate is the last of the secondary plant nutrients.
- Zinc (Zn), Copper (Cu), Manganese (Mn) and Iron (Fe)
- A measurement of the plant-available micronutrients held by the soil. This data indicates an accumulation of metals in the soil that may show the previous history of the soil. The availability of these metals is greatly influenced by the soil’s pH.
- Saturation Percentage (SP)
- A measurement of the maximum amount of water that a soil will hold after an irrigation and drainage; an indirect of the soil texture and organic matter content.
- Calcium plus Magnesium
- A measurement of the water-soluble calcium and magnesium in the soil solution. These are available to the plants, however this data is mostly used to calculate the SAR and ESP of a soil.
- Sodium (Na)
- A measurement of the water-soluble sodium of the soil solution. This is a toxic ion to most plants. This data is also used to calculate the SAR and ESP.
- Chloride (Cl)
- A measurement of the water-soluble chloride in the soil solution. This ion is also very toxic to most plants.
- Boron (B)
- An element that is known to be toxic to many plants in concentrations over 1.0 parts per million.
- SAR- (Sodium Adsorption Ratio) and ESP (Exchangeable Sodium Percentage)
- A measurement of the ratio of calcium, magnesium and sodium in the soil solution. It is used to determine the effects of sodium on the physical structure and permeability of a soil to air and water. This measurement and the electrical conductivity are used to determine the need of adding a calcium source, such as gypsum to a soil.
- Organic Matter
- A measurement of the organic matter content in a soil. Organic matter is a soil component that provides additional tilth or looseness to a soil. It also provides for additional water holding properties to sandy soils and additional aeration or porosity to clay soils.
- Lime Content
- A measurement of the “free” calcium carbonate lime in the soil solution of alkaline soils. Many plants are sensitive to this free lime and determination of it may dictate whether certain plants should be avoided.
- Mechanical Analysis/ Texture
- A determination of the relative proportions of sand, silt, and clay in a soil. This is an indirect measurement of a soil’s infiltration rate. It helps determine the amount of soil amendments that may be necessary.
pH, electrical conductivity, nitrate nitrogen, ammonium nitrogen, phosphorous, potassium, calcium and magnesium
Fertility as above, saturation percentage, calcium plus magnesium, sodium, chloride, boron, SAR, ESP
pH, electrical conductivity, saturation percentage, calcium plus magnesium, sodium, chloride, boron, SAR, ESP
|S-4||Minor Element Package
Sulfate and boron from saturated paste extract, DTPA extracted zinc, copper, manganese, and iron
|SP-4||Mechanical Analysis/Texture (% sand, silt, clay)||$45.00|
|SP-5||Particle Size Analysis of Sand by Sieve||$45.00|
Saturated Paste Extract Analyses
|S-6||pH and Electrical Conductivity||$29.00|
|S-6SC||Sodium and Chloride||$35.00|
|S-8||Cation Exchange Capacity||$40.00|
Soil Test Packages
|H-1-R||Horticultural Appraisal Package II
Complete soil chemical and physical analyses:
S-2, S-4, S-5, S-9 and SP-4
|OM-1-R||Organic Growing Media Appraisal Package
Complete soil chemical and physical analyses;
S-1, S-4, S-6SC, S-8, and SP-1
Physical Properties of Potting Mixes
|SP-1||Porosity and Moisture Holding Capacity of Mixes||$69.00|
|SP-2||Air-filled Porosity of Organic Mixes||$37.00|
|SP-3||Moisture Holding Capacity of Organic Mixes||$37.00|
Plant Tissue Analyses
|P-1||Complete Elemental Analysis N,P,K,Ca,Mg,Fe,B,Zn,Cu,Mn||$97.00|
|P-3||Total Organic Nitrogen||$52.00|
|P-4||Nitrogen, Phosphorous, Potassium Only||$69.00|
pH, electrical conductivity, calcium, magnesium, potassium, sodium, chloride, carbonate, bicarbonate, sulfate, nitrate, boron, SAR, iron, manganese, zinc, and copper
|W-3||Fertilizer Solution Analysis
pH, electrical conductivity, nitrate nitrogen, phosphorous, potassium
|W-9||Hydroponic Fertilizer Solution Analysis
pH, electrical conductivity, nitrate and ammonium nitrogen, phosphorous, potassium, calcium, magnesium, sodium, chloride, carbonate, bicarbonate, sulfate, boron, iron, manganese, zinc, copper. Includes target values for some crops.
Interpretations, Recommendations, office, computer research etc.
|$30.00 per report|
|Rush Charge||$50.00 per sample|
Effective January 1, 2019