Time: 1 - 3 weeks after black layers have formed on 80% of the kernels of most ears.
Where: 8 inch segment of stalk found between 6 and 14 inches above the soil. Void damaged stalks and remove sheaths. Amount: Within an area not larger than 10 acres, fifteen 8 inch segments should be collected at random
to form one composite sample to be evaluated. Areas of differing soil types or management should be sampled separately.
Shipping: Place in a paper bag (not plastic). Refrigerate if delay in shipping is one or more days. Do not freeze.
For laboratory specific information regarding plant tissue analysis, procedures, guidelines, test packages/supplies or analysis kits, please contact one of our laboratories nearest you listed below:
Laboratory Locations:
| AgSource Belmond Labs, Belmond IA | 641-444-3384 | belmondlabs@agsource.com |
| AgSource Soil & Forage, Bonduel, WI | 715-758-2178 | aglab@agsource.com |
| AgSource Harris Laboratories, Lincoln, NE | 402-476-0300 | info@agsourceharris.com |
| Agri-Check, Umatilla, OR | 541-922-4894 | dosgood@agsource.com |
| CRI North West Labs, Jerome, ID | 208-324-7511 | jamdall@agsource.com |
