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	Soil test - Wikipedia, the free encyclopedia
		In agriculture, a soil test is the analysis of a soil sample to determine nutrient content, composition and other characteristics.
		Tests are usually performed to measure fertility and indicate deficiencies that need to be remedied.
		Soil testing is often performed by commercial labs that offer an extensive array of specific tests.
	en.wikipedia.org /wiki/Soil_test (207 words)

	Soil Test Interpretations
		Fertilizer and soil management recommendations shown on the soil test report are based on the soil test and information provided on the information sheet which accompanies the soil sample to the lab.
		Soil test results can be converted from parts per million (ppm) to pounds per acre by multiplying ppm by a conversion factor based on the depth to which the soil was sampled.
		Although the appropriate amounts of fertilizer based on a soil test are recommended and applied, other factors override the effects of fertilizer by limiting the yield potential of a crop.
	www.cahe.nmsu.edu /pubs/_a/a-122.html (1494 words)

	Earthco Soil Test
		Testing should be repeated every 3 to 5 years in order to continue a balanced program of soil nutrient supply and to adjust the pH.
		This test will give the entire nutrient profile including the macronutrients, secondary and micronutrients like sulfur, iron, zinc, copper, boron and manganese PLUS a soil textural analysis for percent sand, silt and clay to classify your soil and understand what amendments are needed to improve the soil tilth, air and water percolation.
		The soil test of choice for established fruit gardens would be the Micronutrient Test, covering both macro and micronutrients along with soil pH and percent organic matter.
	www.drgoodearth.com /index.cfm?fuseaction=home.soiltestfor (1561 words)

	SFM-4 - Converting Among Soil Test Analyses (Site not responding. Last check: 2007-10-16)
		Soil tests provide a means for assessing the fertility status of a soil, but soil tests do not provide a direct measure of the actual quantity of plant available nutrients in the soil.
		Soil fertility index values comprise a continuous relative scale that is calculated from the concentration of extractable nutrients measured in the laboratory, where the highest concentration within the "optimum" range is set equal to a FIV of 100.
		The soil testing conversion factors presented in Table 2 permit the direct application of the crop nutrient recommendations developed in Maryland to soil testing data regardless of how, where, or by whom the soil test was performed.
	www.agnr.umd.edu /MCE/Publications/Publication.cfm?ID=535 (966 words)

	Interpreting the West Virginia Soil Test Report
		Growth and yield may be inhibited by the soil nutrient that is testing in the "very high" range, either because of direct toxic effects to the plant or because excess of one nutrient may interfere with the uptake or availability of other nutrients.
		Soils testing "high" in P are not likely to produce economic yield increases with an application of additional phosphorus.
		Soils with "high" soil test K levels are not likely to respond to fertilizer application, but fertilizer may be applied to replace crop removals.
	www.caf.wvu.edu /~forage/soiltest/intrsoil.htm (2009 words)

	A Soil Nitrogen Test Option For N Recommendations with Corn
		This soil N test involves collecting 0-2 ft. soil samples in the spring before planting and having the samples analyzed for nitrate-N. The quantity of nitrate-N found is then used to calculate a residual N credit.
		When a soil N test is not used, manure N should be credited by calculating the amount of N that will be available (manure rate x manure N content x N availability) and subtracting this amount from the N recommendation determined based on yield, organic matter and previous crop.
		A soil N test to estimate available residual N is not necessary for all acres to be planted to corn in Minnesota.
	www.extension.umn.edu /distribution/cropsystems/DC6514.html (2272 words)

	Soil Test Results
		The soil test values are indicators of the relative available nutrient levels in the soil.
		The soil test values for phosphorus, potassium, cacium and magnesium are not equal to the total amounts of these nutrients abailable in the soil for plant uptake, but they are correlated with plant growth and yield responses, and with fertilizer needs.
		CEC is calculated by adding together the amount of soil test values of potassium, calcium, magnesium, and hydrogen held on the soil particles.
	www.css.msu.edu /SoilTesting/result.html (1185 words)

	G9111 Using Your Soil Test Results, MU Extension
		The CEC on the soil test report is a calculation of the exchangeable calcium, magnesium, potassium, and hydrogen measured by the soil tests.
		Suppose the soil test is 20 pounds of P, and your yield goal is 150 bushels of corn an acre.
		Suppose the soil test is 250 pounds of potassium per acre and the optimal soil test level is 300 pounds of potassium per acre (based on soil texture and CEC).
	muextension.missouri.edu /xplor/agguides/soils/g09111.htm (2541 words)

	Soil Testing
		Once the relationship between soil test values, fertilizer rates and crop yield is known, it is possible to determine the most economical fertilizer rate.
		By conducting a series of experiments, usually over several years, on a wide range of soils, it is possible to relate the laboratory soil test value to actual field yields and rates of fertilizer necessary to achieve maximum yields.
		Once the relationship between soil test values, fertilizer rates and yield of a given crop is determined, it is possible to determine the most economical rate of fertilizer application for a given crop.
	www.ext.colostate.edu /pubs/crops/00501.html (968 words)

	Soil Test Explanation
		Soil pH, determined by the 1:1 soil:water method, indicates the acidity or alkalinity of soil based on a scale of 0 to 14.
		Fertilizer recommended for high-testing soils is for maintenance (to maintain soil fertility at that desirable level).
		In the routine test, values are reported as low (0 to 1 percent), medium (1 to 2 percent), and high (above 2 percent).
	www.ext.colostate.edu /pubs/crops/00502.html (796 words)

	Soil Test Methodology
		Soil test methodology was not a major issue among the three primary southeastern U. states producing runner type peanuts.
		A random collection of 10 soils from peanut farms in southeastern Alabama was distributed to the Auburn University Soil Testing Laboratory, the University of Georgia (Athens) Lab, and the Georgia Coastal Plain Experiment Station (Tifton) Lab.
		These results led to the conclusion that soil test methodology was quite consistent among the three labs, and any differences in fertilizer recommendations that may exist across state lines were due to calibration/interpretation of the data and not to analytical differences.
	www.ag.auburn.edu /aaes/communications/380site/chaptertwo.htm (453 words)

	Agricultural and Environmental Services Labs: Soil Test Handbook
		Soils in their native state are acid and low in phosphorus but higher in potassium than the Coastal Plain Soils.
		Soil Test Interpretation for Phosphorus (P) and Potassium (K) In their native state soils of Georgia are generally low in phosphorus.
		Soil test level may be approaching or at the excessive level.
	aesl.ces.uga.edu /protected/docbase/publications/soil/sth-groups.html (3116 words)

	Floriculture: Fact Sheets: Greenhouse Management: Interpreting the Results of Greenhouse Soil Tests
		Soil testing is the most common way of determining the nutritional status of plants used by greenhouse operators.
		In my experience, the usual reason for testing is to diagnose a suspected fertility problem, but soil tests can be run on a regular basis, along with plant tissue tests, to monitor the nutrition of crops and prevent problems from developing.
		Normal ranges are often printed on the soil test report or are available in accompanying information sheets and are specific to the lab and its method of testing.
	www.umass.edu /umext/floriculture/fact_sheets/greenhouse_management/testrslt.html (1901 words)

	UACES: Publications: Understanding the Numbers on Your Soil Test Reports (Site not responding. Last check: 2007-10-16)
		The need for any nutrient application depends on the soil test level, the soil type or cation exchange capacity of the soil, the crop and yield expected, the time of year and the cultural and other practices to be followed.
		The soil reaction of pH is a measure of the acidity or alkalinity of the soil.
		The normal range for magnesium saturation on Arkansas soils is 3 to 25 percent and 1 to 5 percent for potassium.
	www.uaex.edu /Other_Areas/publications/HTML/FSA-2118.asp (2366 words)

	OurVeggieGarden > Prepare Garden > Soil and Fertilizer > Soil Test
		A soil test simply measures the amount of these nutrients present in the soil sample you provide to the laboratory, and lists this information along with the pH of the soil.
		If your soil is too acidic, it means that the key nutrients are locked into more complex chemical compounds, and the plants will have difficulty absorbing these nutrients into their root, stem and leaf systems.
		This is known as the solubility of the soil nutrients, and unless the plants can acquire the nutrients in the soil into their growth structures, they become stilted and bear little fruit (vegetables).
	www.ourveggiegarden.com /SoilTest.html (226 words)

	Soil Sampling is the Key to a Good Test (Site not responding. Last check: 2007-10-16)
		People often ask about the differences in soil testing labs, what tests they need for a certain situation and how to interpret the analyses.
		Most university soil test calibration work is based on a sampling depth of 6 inches.
		If the soil is dry and you can only collect a sample 3 inches deep, the levels of phosphorus and potassium will appear higher than they actually are.
	www.noble.org /Ag/Soils/SoilSamplingIsKey (497 words)

	Testing your soil
		Careful soil testing and correction of the soil to the specific needs of your garden assures that each crop gets exactly what it needs to grow and yield to its fullest potential.
		Since test results are sensitive to external factors such as ashes, never smoke while gathering or testing your soil and avoid touching the sample with your hands.
		Soil test kits, such as the Sudbury kit, include valuable charts listing the ideal pH for hundreds of flowering plants, vegetables, grasses, and trees, plus, charts illustrating how to determine exact nutritional needs after testing, instructions on how to raise and lower pH, and instructions on when and how to fertilize.
	www.humeseeds.com /soiltest.htm (752 words)

	Understanding Your Soil Test Report
		Lime indicates the presence or absence of carbonates in soil.
		The phosphorus soil test result is in units of parts per million (or ppm), which is equivalent
		The potassium soil test value is a measure of the amount of potassium available to plants
	extension.usu.edu /files/gardpubs/hg512.html (936 words)

	Soil Testing
		A soil test is used to determine the amount of these nutrients in the soil.
		The samples should include soil from the surface to a depth of 6 inches in all areas except for lawns where cores should be taken from a depth of only 2 to 3 inches.
		Soil samples can be taken at any time of the year, but it is best to sample the soil a couple months before planting a garden, establishing perennials or before the optimum time for fertilizing lawns to allow ample time for the lime to react with the soil.
	hgic.clemson.edu /factsheets/HGIC1652.htm (1084 words)

	Soil Testing
		Soil fertility fluctuates throughout the growing season each year--the quantity and availability of mineral nutrients are altered by the addition of fertilizers, manure, compost, mulch and lime or sulfur, in addition to leaching.
		Soils that look different or have been used differently should be sampled and tested separately.
		Based on this test, the client receives recommendations on the amounts of lime and fertilizer to add to the soil and what action to take should an unusually high level of lead be present.
	www.uri.edu /ce/factsheets/sheets/soiltest.html (636 words)

	Soil Sampling for the Home Gardener
		A soil test can provide information on the proper amount of lime and fertilizer to apply to your lawn, garden and other areas of your landscape.
		Soil testing can also be used to diagnose common nutrient deficiencies or toxicities for plants that are growing poorly.
		Soil testing can prevent costly misapplications of fertilizer and lime that can be harmful to plants.
	www.ext.vt.edu /pubs/compost/452-129/452-129.html (395 words)

	EWG Report \|\| Poisonwood Rivals \|\| CCA Wood at Home Improvement Stores (Site not responding. Last check: 2007-10-16)
		Arsenic causes cancer, and children are at a particular risk for high exposures because they play on arsenic treated wood, and put their hands in their mouths much more often than adults.
		A simple home test can tell you how much arsenic is on your deck, playset, or picnic table, and in the soil below.
		Test your wood and soil and mail the samples back to the lab.
	www.ewg.org /reports/poisonwoodrivals/orderform.php (434 words)

	Soil pH Testing, Soil Test Kits & pH Control at Home Harvest Garden Supply
		In the absence of soil test results, 2.5 to 5 pounds of Garden Lime may be applied per 100 square feet.
		Note that adding Iron Sulfate to calcareous soils (soils with high levels of limestone) with high pH may not be effective, as these soils may already contain fairly high levels of unavailable Iron which will remain unavailable unless pH is reduced.
		Espoma Garden Sulfur turns hydrangeas from pink to blue, lowers pH of soil to its optimum range, promotes growth and dark greening of plants, won't burn your plants because of its low salt index and is safe to use around children and pets (not hazardous or toxic).
	homeharvest.com /soiltesting.htm (1060 words)

	Soil Quality: More than a Soil Test (Site not responding. Last check: 2007-10-16)
		Hubbs advises farmers to consider their soil’s physical, chemical and biological characteristics, some of which are affected by management practices.
		Soil electrical conductivity (EC) assessments measure the soluble salts in soil and can be correlated with soil properties that affect crop productivity (see article on page __).
		Soil pH, the acidity or alkalinity of soil, affects plant nutrient availability, microorganism activity and mineral solubility.
	www.ctic.purdue.edu /Core4/SoilQuality.html (1058 words)

	Soil Test Before Making Fertilizer Decisions
		Soil testing to determine soil nutrient levels is essential for making good fertilizer decisions for next year's crops.
		George Rehm, soil scientist with the University of Minnesota Extension Service, cites some key numbers to keep in mind regarding fertilizer for corn and soybeans.
		For soybeans, Rehm says phosphate fertilizer will probably boost yields if the soil test for phosphorus is less than 10 ppm on the Bray test or 8 ppm on the Olsen test.
	cornandsoybeandigest.com /news/soybean_soil_test_making (247 words)

	SOIL TESTING (Site not responding. Last check: 2007-10-16)
		A soil pH indicates whether the soil is acidic, alkaline, or neutral.
		Phosphorus (P) The soil test results represent the amount of phosphorus available to the plants from the soil.
		Potassium (K) The soil test results represent the amount of potassium that is available to the turfgrass plant.
	www.agry.purdue.edu /turf/pubs/ay18.htm (845 words)

	Building Healthy Soil
		Improving the soil structure is one of the most important aspects of soil care, and adding organic matter is the most effective way to accomplish this.
		As the structure of a soil is made more granular and crumbly by decomposing organic matter, the soil absorbs moisture that would otherwise run off, causing erosion and a loss of nutrients in the process.
		For soil that is primarily clay or sand, or that has a hard surface crust (water runs off), or is compacted, incorporate 2 to 3 inches of organic matter in the top few inches of soil and mulch liberally for several years.
	www.ext.vt.edu /pubs/envirohort/426-711/426-711.html (1138 words)

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