Weed Detection on Farms: 'A Guide for Landholders'

Abstract

Weeds constitute a significant cost to Australian landholders each year, both in terms of control and loss of productivity. As custodians for a large part of Australia's landscape, farmers and graziers make an important contribution to the detection and control of weeds. It is therefore important to understand what constitutes a weed, how weeds spread, the best methods for detecting weeds on your property, and what needs to be done if a new weed is found. This booklet discusses the significance of weeds to Australian agriculture, and describes the current 'best practice' principles for early detection of weeds on farms. Much of this information is based on a 2008 national survey of nearly 150 weed inspectors and 570 landholders conducted by the University of New England, which sought to identify 'best practices' currently being employed to detect weeds in Australia. The best practice principles are summarised under six main sections. Where should I look for weeds on my farm? • When should I look for weeds? • How do I identify an unknown weed or unusual plant? • How do I collect and preserve a weed specimen for identification? • What should I do when I find a new weed outbreak? • How should I control new weed outbreaks? Considerable information and resources are available for landholders having difficulties detecting or controlling weeds on their properties. Towards the end of this booklet you will find a list of contact details for relevant authorities in your State or Territory, and a list of useful references (weed identification booklets, brochures and websites).