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3.1 Pesticide Laws and Regulations

3.2 Herbicides Registered for Site Preparation

3 Site Preparation Chemicals

3.1 Pesticide Laws and Regulations

The use of herbicides for site preparation, like all other pesticide use, is controlled by federal and provincial laws and regulations. These laws and regulations may be found in various manuals and publications, however, for up-to-date information, see Handbook for Pesticide Applicators and Dispensers: Forestry Supplement [MOF 1991], and the chapter of this manual entitled "Vegetation Management."

All pesticides are required to be registered by Agriculture Canada and must carry a manufacturer's label and be used according to the specific instructions on that label. It is illegal to use pesticides in a manner other than that specified on the label.

A provincial pesticide use permit is required for any pesticide to be applied in the forests of British Columbia. Any person applying a pesticide must have special training in pesticide application and be certified by the B.C. Ministry of Environment, Lands and Parks, (Pesticide Management Branch), or be supervised closely by a certified applicator. Project managers must adhere to the laws and regulations governing pesticide handling, storage, and application. See the chapter of this manual entitled "Vegetation Management" or see the Handbook for Pesticide Applicators and Dispensers: Forestry Supplement, [MOF 1991] for more information.

3.2 Herbicides Registered for Site Preparation

The chapter "Vegetation Management" lists the herbicides and examples of their formulations that are registered for forest site preparation. Only glyphosate (Vision®), 2,4-D amine, 2,4-D ester, triclopyr (Release®), and hexazinone (Velpar, Pronone) have forestry registration. The herbicide used most widely in British Columbia forests is glyphosate.

Requirements and Characteristics of Herbicides

A site preparation herbicide must not show extended residual activity in soil, as this could damage crop trees planted in the future. The waiting periods needed for conifer establishment following site preparation using a herbicide treatment are presented in Table 13.4 in Otchere-Boateng and Herring [1990]. Where there is no need for saving residuals or naturals, treatment windows can be wider than for release operations. The characteristics of the herbicides registered for site preparation are listed in the Herbicide Field Handbook, FRDA Handbook 006 by Otchere-Boateng [1990].


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Copyright 1999 Province of British Columbia
Forest Practices Branch
BC Ministry of Forests
This page was last updated December 1993

Comments to: Tim Ebata <Tim.Ebata@gems8.gov.bc.ca>