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It relates to pH. An acid soil (pH of less than 7) is said to be "Sour". Alkaline soils (pH above 7) are generally referred to as "Sweet".

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15y ago
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5mo ago

Soil is considered sweet or sour based on its pH level. Sweet soil has a pH above 7, indicating it is alkaline, while sour soil has a pH below 7, indicating it is acidic. Most plants prefer a slightly acidic to neutral soil pH for optimal growth.

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Q: When is the soil considered to be sweet soil or sour soil?
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