Neutral soil
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Neutral soil
Soil testing. A pH meter showing a neutral pH 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 6-7, meaning that this is a neutral soil. Some plants are intolerant of acid or alkaline soils, and the pH has to be corrected towards this normal level. For a sequence of pH tests for acid, neutral and alkaline soils, see images E770/1157-1159
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Media ID 6358451
© SHEILA TERRY/SCIENCE PHOTO LIBRARY
Agricultural Agriculture Analogue Analysing Analysis Apparatus Device Dial Experiment Experimental Farming Land Use Measurement Measuring Mechanised Mechanized Meter Neutral Pointer Reading Scale Soil Test Testing Horticultural
EDITORS COMMENTS
This print captures the essence of soil testing and its significance in agriculture and horticulture. In the image, a pH meter proudly displays a neutral pH level of soil, showcasing its suitability for various plants. Farmers and gardeners rely on these meters to assess the acidity or alkalinity of their soil, as different plants have specific requirements. The probe inserted into the ground measures the concentration of free hydrogen ions present, providing an accurate reading on the pH scale. With a reading between 6-7, this particular soil is deemed neutral - neither acidic nor alkaline. However, if it were outside this range, adjustments would be necessary to create an optimal environment for plant growth. Understanding soil pH is crucial because certain plants cannot thrive in highly acidic or alkaline conditions. Therefore, farmers must correct any imbalances towards this normal level to ensure successful cultivation. This photograph not only showcases advanced technology but also highlights how science plays a pivotal role in modern farming practices. By analyzing and interpreting data from such devices, farmers can make informed decisions about land use and crop selection. Science Photo Library has once again captured an intriguing moment that exemplifies both scientific exploration and practical agricultural applications with precision and clarity.
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