The most reliable indicator of pecan or fruit tree fertility is the foliage, which is why it's important to test the leaves from pecan and fruit trees. A chemical analysis can save money on fertilizer, but the sample must be taken correctly and at the proper time (July 15, plus or minus 10 days). Each sample should represent soil and a uniform set of trees or management practices. Different orchards and soils should be sampled separately. Procedures for taking a leaf sample and information form are located in the Leaf Analysis Information Sheet.

Mailing Information

1. Write the sample name and crop ID on the bag. This is important for identification during the laboratory process, especially when more than one sample is submitted. Testing takes about seven to 10 working days from the time we receive your shipment.

2. Be sure the name, address and sample ID on the information sheet correspond to information on the bag. Please give information on the pecan or fruit variety.

3. Do not send cash or check. Leaf testing is free to Noble cooperators. For those who are not cooperators, Noble does not charge for its services, but our contract laboratory, Oklahoma State University in Stillwater, Okla., charges for testing analysis. Oklahoma State University's testing cost is located in the Leaf Analysis Information Sheet.

Mail samples and information sheet to:   Ag Testing   Noble Foundation   2510 Sam Noble Pkwy   Ardmore, OK 73401