Presentation is loading. Please wait.

Presentation is loading. Please wait.

Russian olive (Eleagnus angustifolia) THE GOOD Windbreak Wildlife habitat Wildlife feed source Drought tolerant Nitrogen fixation.

Similar presentations


Presentation on theme: "Russian olive (Eleagnus angustifolia) THE GOOD Windbreak Wildlife habitat Wildlife feed source Drought tolerant Nitrogen fixation."— Presentation transcript:

1

2 Russian olive (Eleagnus angustifolia) THE GOOD Windbreak Wildlife habitat Wildlife feed source Drought tolerant Nitrogen fixation

3 Russian olive (Eleagnus angustifolia) THE BAD Spread by suckers and seeds Displaces native vegetation Reduces bio-diversity Reduces land use and values

4 Russian olive (Eleagnus angustifolia) THE UGLY!

5 Propagation Sexualspread by birds and other wildlife AsexualStressed or damaged trees readily sucker KeyKill the crown before plant removal

6 A Noxious Weed In some Utah Counties CarbonSevier DuchesneUintah GrandWayne San Juan

7 Chemical Application Methods Foliar Spray Basal Bark Spray Frill Cut Stump Cut

8 Foliar sprayingcomplete control is difficult Care must be taken to apply herbicide to every branch Increased the risk of contaminating the environment or damaging non-target plants. Dilution of the chemical is usually required.

9 Apply herbicide to the lower area of the main trunk(s) of the tree Chemical is absorbed through the bark Reduced the risk of environmental contamination Less effective on trees with corky bark Penetrating oil or diesel may help with absorption to cambium

10 Cut notches through the bark and into the sap wood of the tree Undiluted herbicide is poured or injected into each notch Cuts are made with a downward motion so the notches will hold the herbicide Do not girdle the tree with the chop marks. Environmentally friendly application method that makes very efficient use of herbicide The main difficulty is getting through the thorny lower branches of the tree to access the trunk Undiluted herbicide is applied in small amounts (2cc or less per inch of trunk diameter)

11 Frill Cut

12 The tree is cut down and the stump is immediately (within ten minutes) sprayed or painted with herbicide Cutting down the tree and applying the chemical immediately usually requires two or more people to accomplish Anecdotal evidence indicates this may not be as effective as the frill cut method Undiluted chemical is more effective with this application method

13 Used the Frill Cut method for accuracy of placement and ease of metering Three chemicals Habitat (Arsenal)28.7% 2-4,D47.3% Roundup41.0% Three rates (cc/inch trunk diameter) Control trees were cut and marked but nothing was applied to the cuts

14

15 The tress were treated October 12, 2005 and evaluated September 5, 2006

16 Results Control trees showed no evidence of stress or damage

17 Results

18

19

20 Chemical Effectiveness Tree #1Tree #2Tree #3Average Control ,D ,D ,D Roundup Roundup Roundup Habitat Habitat Habitat

21

22 Results The frill-cut method is effective and reduces environmental contamination Lower application rates appear to be as effective as the higher rates No significant difference in the effectiveness of the different chemicals used The greatest cost, regardless of chemical and application method, is labor to remove the plants

23 Recommendations Treat trees with the frill-cut method Take care to not girdle the tree with frill cuts Apply 1.0 cc of undiluted chemical into each cut Use of a soil-active chemical could hinder re- vegetation efforts

24 Time-of-year effectiveness Biocontrol--goats

25


Download ppt "Russian olive (Eleagnus angustifolia) THE GOOD Windbreak Wildlife habitat Wildlife feed source Drought tolerant Nitrogen fixation."

Similar presentations


Ads by Google