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Acid soil. Soil testing. A pH meter showing the acidity of soil
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Acid soil. Soil testing. A pH meter showing the acidity of soil
Soil testing. A pH meter showing the acidity of soil. Farmers and gardeners use pH meters to determine the pH level of soil to assess its suitability for different plants. A probe placed in the soil measures the amount of free hydrogen ions present, giving a value on the pH scale. A pH of 7 is neutral, above 7 is alkali and below 7 is acid. This meter displays a pH of 4-5, meaning that this is an acid soil. Some plants are intolerant of acid soils, and so corrective procedures may be necessary to increase the soil pH to make it more suitable. For a sequence of pH tests for acid, neutral and alkaline soils, see images E770/1157-1159
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Media ID 6357179
© SHEILA TERRY/SCIENCE PHOTO LIBRARY
Acid Acidity Agricultural Agriculture Analogue Analysing Analysis Apparatus Device Dial Experiment Experimental Farming Land Use Measurement Measuring Mechanised Mechanized Meter Pointer Reading Scale Soil Test Testing Horticultural
EDITORS COMMENTS
This print showcases a crucial aspect of soil testing - the acidity level. In the image, a pH meter takes center stage, revealing the acidity of the soil being examined. Farmers and gardeners rely on such meters to evaluate whether their soil is suitable for various plants. By inserting a probe into the ground, they can measure the concentration of free hydrogen ions present in order to determine its pH value on a scale ranging from 1 to 14. The pH meter displayed here indicates an acidic reading between 4 and 5, indicating that this particular soil falls below neutral (pH 7). Acidic soils can pose challenges as certain plants are intolerant to them. Consequently, corrective measures may be required to increase the soil's pH level and make it more conducive for cultivation. This photograph not only highlights an essential tool used in agriculture and horticulture but also emphasizes how technology aids farmers in optimizing land use. The mechanized device with its dial and pointer offers precise readings that enable accurate analysis of soil chemistry. It represents one small part of a larger process involving experimentation, measurement, and analysis within agricultural practices. Science Photo Library provides this insightful image without any commercial intentions or affiliations with specific companies. Instead, it serves as an educational resource showcasing advancements in scientific technology applied within farming and gardening industries worldwide.
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