25 May, 2016
Wheat plant tissue samples should be the flag leaf after Feekes 10 and whole plant prior to that stage. Corn and soybeans are whole plant at seeding stage. Nitrogen soil sampling is approaching, 12 inch deep soil sample and corn 12 inches tall is the recommended time. Be sure to send at least a double fist or softball size of plant material.

Spectrum Analytic Inc.
1087 Jamison Rd NW
Washington Court House, OH 43160-8748

Please note that our mailing address has changed