logging in or signing up invasivepres Misree Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: Embed: Flash iPad Dynamic Copy Does not support media & animations Automatically changes to Flash or non-Flash embed WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 47 Category: Travel/ Places.. License: All Rights Reserved Like it (0) Dislike it (0) Added: March 12, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Invasive Weeds Gary HathornSan Juan County Extension Agent: Invasive Weeds Gary Hathorn San Juan County Extension AgentWhat is a weed?: What is a weed? Weed = a plant growing where it is not wanted. Exotic invasive weed = not native to a particular area. Noxious weed = Identified by the government as a problem. BIA has identified 22 noxious weeds for the Navajo Area.Why are these weeds bad? – Ecological Damage: Why are these weeds bad? – Ecological Damage Choke out native species Destroy wildlife habitat Increase soil erosion Increase ground water losses Destroy recreational sites Reduce property values Destroy livestock feed Increase frequency of fire How are weeds spread?: How are weeds spread? Wind Water Livestock Wildlife Horses People and pets Hay Farm equipment Crop seed VehiclesFive methods of weed control: Five methods of weed control Preventative Weed free seed, hay, equipment, irrigation water. Cultural Management practices Biological Predators, pathogens, parasites. Mechanical Pulling, hoeing, mowing, tillage. Chemical Herbicides Using 2 or more of the 5 is an integrated approach.Leafy Spurge : Leafy Spurge Leafy Spurge: Leafy Spurge Dalmation Toadflax: Dalmation ToadflaxDalmation Toadflax : Dalmation Toadflax Perennial Pepperweed: Perennial PepperweedBull Thistle : Bull Thistle Bull Thistlerosette and flower: Bull Thistle rosette and flowerCamelthornMature plant and stems: Camelthorn Mature plant and stemsCanada Thistle mature plant: Canada Thistle mature plantCanada Thistle rosette and flower: Canada Thistle rosette and flowerHalogeton mature plant: Halogeton mature plantJointed Goatgrassmature plant and leaf : Jointed Goatgrass mature plant and leaf Musk Thistle mature plant and rosette: Musk Thistle mature plant and rosetteRussian Knapweed mature plant : Russian Knapweed mature plant Russian Knapweed rosette and flower : Russian Knapweed rosette and flower Russian Knapweed Infestation: Russian Knapweed InfestationScotch Thistle mature plant : Scotch Thistle mature plant Scotch Thistleseedlingand seed head: Scotch Thistle seedling and seed headSpotted Knapweed mature plant and flower : Spotted Knapweed mature plant and flower Hoary Cress mature plant: Hoary Cress mature plantHoary Cress infestations and seed heads : Hoary Cress infestations and seed heads Diffuse Knapweed mature plant: Diffuse Knapweed mature plantDiffuse Knapweed seedhead and young plant: Diffuse Knapweed seedhead and young plantField Bindweed: Field BindweedField Bindweed: Field BindweedField bindweedinfestation: Field bindweed infestationRussian Oliveinfestation: Russian Olive infestationSaltcedar: Saltcedar You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.