Noxious and environmental weed control handbook

Integrated weed management is the coordinated use of a range of suitable chemical and non-chemical control methods. e aim is to incorporate a variety of control methods and reduce reliance on herbicides. Successful integrated weed management programs require long-term planning, knowledge of the weed’s biology and ecology as well as appropriate weed control methods.

In many situations, weed control is more cost effective and practical when herbicide and non-herbicide control methods are integrated. Many weed infestations can be controlled or eradicated using integrated methods.

Integrated management is required when herbicide control is not economically feasible, for example, in large infestations of lantana where a combination of re, herbicides, mechanical controls, pasture and grazing management can achieve successful control. An integrated control program for lantana could be: remove stock for several months, burn at the appropriate time, sow an improved pasture in early summer, continue to exclude stock until pasture establishes and follow up with herbicide spot spraying on regrowth. This regime may need repeating for 2 or 3 years. Depending on the terrain and access, burning could be substituted with bulldozing or slashing to reduce the bulk of the mature plants and then followed up with spot spraying. A similar integrated program could also be used for blackberry control.

Bitou bush, another invasive environmental weed, infests up to 75% of the New South Wales coastline. A long- term integrated control program is being implemented to combat this weed threat, involving a combination of manual, biological and chemical controls. 

NSW Department of Primary Industries, 2011