Soil test is the analysis of a soil sample to determine nutrient and contaminant content, composition and other characteristics such as acidity or pH level. Testing soil can identify many properties of the soil, including information on the types of soil in the testing area, soil texture, nutrient and water retention, and chemical, organic and biological components found in the soil. A good soil test is essential because it lets you know the specific nutrient needs of your garden so you do not waste money on the wrong fertilizers. Tests are usually performed to measure the expected growth potential of a 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. Soil testing is often performed by commercial labs that offer a variety of tests targeting groups of compounds and minerals. If you want to test your own soil, you can use a soil test kit. Lab tests are more accurate, though both types are useful. Soil testing is useful to facilitate fertilizer composition and dosage selection for land employed in both agriculture and horticulture.
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