Answers to the SpringTime Wheat Problems Quiz

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1. Wheat streak

2. Poor fertilizer spread

3. Greenbugs

4. Speckle leaf blotch

5. Tan spot

6. To minimize grain yield losses, cattle should be removed from wheat that is being pastured when the first hollow stem appears as illustrated in the photo. This first hollow stem is the distancing of the growing point from the crown region, but before the node or joint has been formed.

 

Button link to picture of first hollow stem
Click on the picture to view full size

This needs two arrows on the pix.

If you wait for grazed wheat to joint before removing cattle significant yield losses have already occurred. And, if wheat is grazed closely, the nodes would be removed by the cattle. Pick the largest stems to dissect and use a magnifying lens to see the growing point.

7. Wild buckwheat

8. Russian Wheat aphid

9. Barley Yellow Dwarf

10. Jointed goat grass

11. Tordon carryover-sterile heads

12. Freeze 1 (injured)

13. Freeze 2 (not injured, note crisp, turgid, greenish appearance)

 

Prepared by: Research and Extension Crop Protection Specialists Dallas Peterson, Jim Shroyer, Bob Bowden , H. Leroy Brooks and Nahid Dadgar.