|
|
|
|
The Global Invasive Species Team | |
|
||
|
|
|
|||||||
|
Global Invasive Species Team listserve digest #015 Tue, 26 Jan 1999 15:33:06 -0800 (PST) --CONTENTS-- 1. Hackberry Control and GPS suggestions 2. Mapping weed infestations 3. Hackberry Control --------------------------------------- 1. Hackberry Control and GPS suggestions From: Chris Maron (cmaron(at)tnc.org) On controlling hackberry seedlings: You might consider purchasing a portable burn unit that operates like a little blow torch. Jack McGowen-Stinski from the Michigan Field Office uses one to burn buckthorn seedlings. We purchased one for Indiana but I moved to the Adirondacks before we had a chance to use it. We got it from Northern Supply or some name like that. The unit was called something like the "Red Devil" or "Fire Devil" and operates with propane. I suggest you contact Jack to get more information. For Donnelle in Maryland: A suggestion would be to purchase a Global Positioning System and have someone circle infestations and click as he circles the weeds; or stand in the middle and click. Also, you might experiment with aerial photos, maybe with infra red. I've heard about someone using kites to get aerial photos of small areas. I can't remember who told me about that person but if Donnelle wants to pursue that further, have her give me a call and I'll ask around for the person's name. Chris Maron Adirondack Field Office --------------------------------------- 2. Mapping weed infestations From: Jonathan Soll (jsoll(at)tnc.org) In my relatively limited experience I have found two methods that work well, 1 kind of low-tech, the other high-tech. 1. Low tech - Use aerial photographs and interns 2. High tech use GIS. GIS units are available that can record the boundary of a patch as you walk around it. The data can be downloaded and mapped onto orthophotos or topomaps. You can even enter codes in the field to indicate density of plants within a patch. The units are sort of costly (I haven't priced one in a while) but are easy to use. Jonathan Soll WAFO --------------------------------------- 3. Hackberry Control From: Bill Kleiman (nachusa(at)essex1.com) I have not tried to control a bunch of hackberrry, but we occasionally kill a few of them. I suggest you use 20 - 30% Garlon 4 in mineral oil with a colorant added (so you know where you have been). We often use a 1 and 1/2 inch paint brush and carry a small tin can with the herbicide in it. Paint several inches of the bark with the Garlon and you will have a good kill rate. We often store the can in a 4 gallon bucket with extra Garlon mix in a detergent bottle that is well labeled. This method has worked well on gray dogwood, buckthorn, honeysuckle, and young trees of cherry and elm and hackberry. If this sounds like too much work you can either keep mowing, or use might try Krenite herbicide which is a bud inhibitor and only works on woody species. You might spray this chemical on the foliage in September. Krenite is expensive and I think more toxic to humans. Bill Kleiman Nachusa Grasslands, The Nature Conservancy 2055 Lowden Rd., Franklin Grove, IL 61031 815-456-2340. Fax is 456-2342. nachusa(at)essex1.com --------------------------------------------------------------- |
||||||||
