Crop and Pasture Science Crop and Pasture Science Society
Plant sciences, sustainable farming systems and food quality

Weed management in wide-row cropping systems: a review of current practices and risks for Australian farming systems

S. C. Peltzer A I , A. Hashem B , V. A. Osten C , M. L. Gupta D , A. J. Diggle E , G. P. Riethmuller F , A. Douglas G , J. M. Moore A and E. A. Koetz H
+ Author Affiliations
- Author Affiliations

A Department of Agriculture and Food Western Australia, 444 Albany Highway, Albany, WA 6330, Australia.

B Department of Agriculture and Food Western Australia, PO Box 484, Northam, WA 6401, Australia.

C Department of Primary Industries and Fisheries, LMB 6 Emerald, Qld 4720, Australia.

D School of Land, Crop and Food Sciences, University of Queensland, Gatton, Qld 4343, Australia.

E Department of Agriculture and Food Western Australia, Locked Bag 4, Bentley Delivery Centre, WA 6983, Australia.

F Dryland Institute, Department of Agriculture and Food Western Australia, Great Eastern Highway, Merredin, WA 6415, Australia.

G Department of Agriculture and Food Western Australia, 10 Dore St, Katanning, WA 6317, Australia.

H EH Graham Centre, NSW DPI, Pine Gully Road, Wagga Wagga, NSW 2650, Australia.

I Corresponding author. Email:

Crop and Pasture Science 60(5) 395-406
Submitted: 18 April 2008  Accepted: 6 March 2009   Published: 14 May 2009


Growing agricultural crops in wide row spacings has been widely adopted to conserve water, to control pests and diseases, and to minimise problems associated with sowing into stubble. The development of herbicide resistance combined with the advent of precision agriculture has resulted in a further reason for wide row spacings to be adopted: weed control. Increased row spacing enables two different methods of weed control to be implemented with non-selective chemical and physical control methods utilised in the wide inter-row zone, with or without selective chemicals used on the on-row only. However, continual application of herbicides and tillage on the inter-row zone brings risks of herbicide resistance, species shifts and/or changes in species dominance, crop damage, increased costs, yield losses, and more expensive weed management technology.


This study was supported by the CRC for Weed Management. Thanks to Steve Walker for his constructive comments on the manuscript. An abbreviated version of this paper was presented at the 16th Australian Weeds Conference in Cairns, Australia, in May 2008.


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