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Agronomic Services — Wheat Tissue Sampling, slide 5 of 12

Determining Zadoks GS 30 (Feekes GS 5)

diagram of growing point at growth stage 5.The growing point at Zadoks
GS 30 (Feekes GS 5) looks
like a tiny green pine cone
and is 1/2 inch above the

Once wheat reaches this
growth stage, collect tissue
and biomass samples.

illustration credit:
R. Weisz & R. Heiniger;
John Burleson
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Last Update April 29, 2013


NCDA&CS Agronomic Services Division, Colleen M. Hudak-Wise, Ph.D., Director
Mailing Address: 1040 Mail Service Center, Raleigh NC 27699-1040
Physical Address: 4300 Reedy Creek Road, Raleigh NC 27607-6465
Phone: (919) 733-2655; FAX: (919) 733-2837

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