Ask The Biologist

How To Fix pH

How To Fix pH

By Bob Humphrey

Put the lime on the food plot and they’ll eat it all up!

QUESTION: I’ve been told you can’t put to much garden lime on a food plot. Is that true?

ANSWER: As a general rule of thumb it is true, but there’s a limit. It comes down to soil pH, which you should test before applying lime or other minerals, and then follow the recommended application from your test results.

Most soils have low pH and are acidic, so adding lime helps promote plant growth. A general recommendation is to apply no more than 2 1/2 tons of lime per acre per year. A little extra won’t do too much damage, but if pH gets too high and soils become alkaline, that can inhibit plant growth, burn plants and even kill soil microorganisms that are important in nitrogen fixation and nutrient uptake.

There’s plenty of margin for error, but there is such a thing as too much of a good thing.

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