References
- Allen , F. C. and Butler , J. H. B. Comparison of some post-emergent chemicals for wild oat control in cereals . Proceedings of the 33rd New Zealand Weed and Pest Control Society Conference . pp. 237 – 240 .
- Allen , F. C. , Butler , J. H. B. and Meeklah , F. A. 1980 . “ Weed control in wheat barley and oats—Use of herbicides ” . In Aglink FPP 399 , Wellington Media Services. New Zealand Ministry of Agriculture and Fisheries .
- Allen , F.C. and Smallridge , T. J. Chemical control of wild oats alone and with broadleaved weeds in wheat and barley . Proceedings of the 25thNew Zealand Weed and Pest Control Society Conference . pp. 192 – 198 .
- Bourdôt , G. W. and Butler , J. H. B. Yellow gromwell control with herbicides in wheat . Proceedings of the 35th New Zealand Weed and Pest Control Society Conference . pp. 233 – 236 .
- Butler , J. H. B. , Allen , F. C. and Lister , A. J. Comparisonof some wild oatherbicides for use in barley . Proceedings of the 33rd New Zealand Weed and Pest Control Society Conference . pp. 241 – 244 .
- Carson , J. 1987 . Less herbicide use trend to continue . New Zealand journal of agriculture , : 18 – 20 . July 1987
- Cousens , R. 1985 . A simple model relating yield loss to weed density . Annals of applied biology , 107 : 239 – 252 .
- Foreman , M. S. New developments in cereal broadleaf weed control . Proceedings of the 18th New Zealand Weed and Pest Control Society Conference . pp. 47 – 53 .
- Foreman , M. S. Prospects for cereal weed control in New Zealand . Proceedings of the 19th New Zealand Weed and Pest Control Society Conference . pp. 20 – 24 .
- Friesen , G. and Shebeski , L. H. 1960 . Economic losses caused by weed competition in Manitoba grain fields. 1. Weed species, their relative abundance and their effect on crop yields . Canadian journal of plant science , 40 : 457 – 467 .
- Leonard , F. W. Difficult-to-kill weeds of cereals . Proceedings of the 19th New Zealand Weed and Pest Control Society Conference . pp. 41 – 44 .
- Meeklah , F. A. H. Control of ‘difficult’ weeds in wheat . Proceedings of the 15th New Zealand Weed and Pest Control Society Conference . pp. 103 – 108 .
- Walker , P. T. 1983 . Crop Losses: The need to quantify the effects of pests, diseases and weeds on agricultural production . Agriculture, ecosystems, and environment , 9 : 119 – 158 .
- Zimdahl , R. L. 1980 . Weed crop competition: a review , Oregon State University .