Contents

Maps

Discussion

Future Goals

Images from Workday

Piles of Cut Stems

Herbicide Applications

Views of Treatment Areas From Different Directions

Views of Smaller Work Area

Fauna

Precipitation

Maps

Closer view of work area in above map.

Discussion

This post was written to record the work completed at the 10/11 workday at Hosah Park. Glossy buckthorn (Frangula alnus) was cut and had Rodeo (53.8 percent active ingredient glyphosate) applied to the cut surfaces. The areas where work occurred at this workday are outlined in red in the above maps. The smaller area, outlined in yellow, was where Rodeo was applied to each stem twice. All stems in the treatment area outside of the yellow outline had this herbicide applied to the cut stems once. This is the typical application method.

Applying herbicide once to stems less than one inch in diameter is not highly effective. This method is insufficient for treating various woody invasive species. The images included in this blog post will allow for a comparison of applying herbicide once or twice. This comparison will help determine if improved control can be achieved after the first application.

The stems in the smaller workday area were cut high. In my experience, this concentration of glyphosate kills the stems down for about 20 inches. However, it does not kill the roots when the stems are cut this high. Next year, I will be able to see if my prediction is correct.

Future Goals

Reduce herbicide usage by asking people to not apply herbicide to the point that it runs down the stem. Remember to ask people to cut stems flat before work has begun. This will help prevent applied herbicide from running off the cut and down the stem. Give herbicide applicators pruners to hold in their non-dominant hand. This will allow them to cut stems that were not cut flat or cut stems that missed getting cut. Sharpen personal pruners I bring before attending the workday.

Images from Workday

Piles of Cut Stems

1. Pile of cut glossy buckthorn stems where my team was working

2. Other teams’ pile of cut buckthorn stems. North side of the island.

3. All cut glossy buckthorn stems piled on Fulton Avenue at end of workday.

Herbicide Applications

4. Squeeze bottle applicator used by volunteers to apply herbicide.

5. Location where herbicide was applied to cut stems, allowed to absorb, then applied a second time

6. Glossy buckthorn that had herbicide applied to stems twice. Right side of treatment area in above image.

7. Glossy buckthorns that had herbicide applied to each stem twice. Front and right side of treatment area shown in image five.

8. Center and back of the treatment area shown in image five.

9. Left and front of the treatment area in image five.

10. Left and center of treatment area shown in image number five.

11. Left and back of treatment area shown in image number five.

12. Closer view of treated glossy buckthorn on left side of above image.

13. Three treated glossy buckthorn on right side of image number 11.

14. Closer view of glossy buckthorn in upper left of above image.

15. View of treatment area from west looking east.

Views of Largest Treatment Area From Different Directions

16. View of largest work area looking toward the north.

17. Closer view of largest work area looking toward the north.

18. View of largest work area looking toward the west.

19. Closer view of largest work area looking toward the west.

20. View of largest work area looking toward the south.

21. Closer view of largest work area looking toward the south.

22. View of work area looking toward the east.

23. Closer view of largest work area looking toward the east.

Views of Smaller Work Area

24. Northern portion of second smaller work area.

25. Southern portion of second smaller work area.

Fauna

26. Eggs attached to vegetation

Precipitation

0.02 inches of rain occurred the following day. Significant rain occurred Tuesday evening.