This week the wheat is at head emergence whereas the barley is well into flowering (anthesis).  This is when the plants are most susceptible to freeze damage because the heads are partially or fully exposed.  Any stress during this time period will affect cell replication within the developing kernels thus reducing overall kernel size.   Proper timing of irrigation is crucial during this time.

Growing degree days for week of 6/14 - 6/20 = 249
Accumulated growing degree days (emergence to 6/20) = 1363.5

Merit 2-row Barley

Merit: 2-row spring barley.  Picture taken 6/21/99 at flowering (anthesis) stage.   Zadoks scale: 65, Feekes scale: 10.5.2, Haun scale: 11.5.

Merit: 2-row spring barley.  Picture taken 6/21/99 at flowering (anthesis) stage.   This head is approximately 3" long (excluding awns) and was fully emerged from the boot.

Whitebird Soft White Spring Wheat

Whitebird: soft white spring wheat..  Picture taken 6/21/99 at head emergence.  Zadoks scale: 53, Feekes scale: 10.2, Haun scale: 10.4. 

Whitebird: soft white spring wheat.  Picture taken 6/21/99 at head emergence.   This head is approximately 4" long (excluding awns) and approximately 1/4 of the head was emerged from the boot.

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