The third phase is adopting proper range techniques as a portion of the IWM program. The goal of inventorying is to record weed species present, area of infestation, density of infestation, rangeland at risk of invasion, soil and ranges types, and other factors pertinent to successful weed management. Inventories can be conducted by field surveys, aerial photography and geographic information systems. Weed inventory requires technical skill and can be time consuming. Information from an inventory should be incorporated into a management unit map that shows the location, type and size of weed infestations.
Accurate mapping is important in developing a land use plan and in evaluating it.
Planning and implementing an IWM strategy is the second phase of a rangeland weed management program. While planning, you identify and prioritize problems and solutions and develop an economical action plan that guides implementation. The plan should prevent encroachment into uninfested rangeland, detect and eradicate new introductions and control large infestations. It often involves revegetation. Keys to successful weed management is sustained effort, reevaluation and the adoption of improved strategies.