Even though winter has not arrived and spring/summer gardens are probably an after thought in early October, now is the time to take soil samples to check soil pH levels. Soil pH is a measure of acidity and alkalinity on a scale of 0-14 with 7 being neutral. A pH value below 7 becomes more acid, above 7 becomes more alkaline. Most garden vegetables' optimum pH range is 5.8 to 6.3. As the soil pH gets further from this range, either lower or higher, gardens will become less productive by limiting the ability of vegetables to uptake nutrients.

Why should I sample this time of year? The most common problem in Richland Parish is low pH. This is corrected with lime which needs the fall and winter months to react with the soil and increase pH to optimum levels. Gardens with high soil pH are corrected with aluminum sulfate or sulfur.

Samples should be taken 4-6 inches deep at several locations in the garden to get a representative sample. Collect these samples in a bucket and mix well. Bring one pint of soil to the Extension office where it will be sent to the soils lab. The fee for a routine soil sample is $10.00 with results usually returning in 10 working days. The County Agent will help interpret and advise on needed soil amendments.

For more information contact your local Extension Office at 728-3216 or at 702 Madeline Street in Rayville. Additional information is available at the Soil Testing & Plant Analysis Lab website.

Keith Collins
County Agent