Plant | pH |
Apple | 5.0 - 6.5 |
Potato | 4.5 - 6.0 |
Black currant | 6.0 - 8.0 |
Mint | 7.0 - 8.0 |
Onion | 6.0 - 7.0 |
Strawberry | 5.0 - 7.0 |
Lettuce | 6.0 - 7.0 |
Answer:
Most of the plants grow best when the pH of
the soil is close to 7. If the soil is too acidic or too basic, the plants grow
badly or do not grow at all. As quicklime, slaked lime or chalk are all
alkaline substances, these would be added to the soil by the farmer when soil
is highly acidic.
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