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Interaction Between Wheat (Triticum aestivum) and Diclofop to Reduce the Cost of Annual Ryegrass (Lolium rigidum) Control

Published online by Cambridge University Press:  12 June 2017

Deirdre Lemerle ,
Birgitte Verbeek  and
Neil E. Coombes
Deirdre Lemerle
Affiliation:
NSW Agriculture, Agricultural Research Institute, Private Mail Bag, Wagga Wagga, N.S.W. 2650 Australia
Birgitte Verbeek
Affiliation:
NSW Agriculture, Agricultural Research Institute, Private Mail Bag, Wagga Wagga, N.S.W. 2650 Australia
Neil E. Coombes
Affiliation:
NSW Agriculture, Agricultural Research Institute, Private Mail Bag, Wagga Wagga, N.S.W. 2650 Australia
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Abstract

The influence of wheat variety on the dose-response of annual ryegrass to diclofop-methyl (POST) was examined in the field in 1992 and 1993 in southern New South Wales, Australia. The aim was to determine if planting a strongly competitive variety of wheat improved control of annual ryegrass at reduced doses of diclofop-methyl. Suppression of ryegrass was dependent on herbicide dose, season, and wheat variety. In the absence of herbicide, dry matter (DM) production of annual ryegrass at 300 plants m−2 at anthesis was 500 g ha−1 with Dollarbird and Katunga compared to 1000 g ha−1with Rosella or Shrike in 1992. In 1993, DM was approximately 150 g ha−1 with Dollarbird or Katunga, and 350 g ha−1with Shrike or Rosella. Ryegrass DM was reduced by diclofop-methyl to a greater extent, relative to the weedy unsprayed controls, with less competitive varieties Rosella and Shrike than with the more competitive Dollarbird or Katunga. Diclofop-methyl at 0.28 kg a.i. ha−1 reduced DM of ryegrass growing with Katunga to less than 100 g m−2 in 1992, compared to more than 200 g m2 with the other varieties. In 1993, diclofop-methyl was more effective on ryegrass, and the same dose reduced ryegrass DM to almost zero in all varieties. Grain yields in unsprayed weedy controls of Dollarbird and Katunga were reduced approximately 20% by annual ryegrass compared with yields achieved with herbicides in both years. Yields of Rosella and Shrike in the unsprayed controls were reduced about 40% in 1992 and 60% in 1993. Only small increases in grain yields of all varieties occurred from diclofop-methyl doses above 0.13 kg a.i. ha−1. Poorly competitive varieties were dependent on herbicides to achieve grain yield potential and had a greater risk of weed survival when herbicide efficacy was reduced. In contrast, strongly competitive varieties, likely to retard build-up of weed seed in the soil, are less dependent on herbicides to achieve grain yield potential, and therefore result in reduced weed control cost.

Keywords

Diclofop, (+)-2-[4-(2,4-dichlorophenoxy)phenoxy]propanoic acidrigid ryegrass Lolium rigidum Gaudin ♯ LOLRIwheat, Triticum aestivum cv, ‘Rosella,’ ‘Shrike,’ ‘Dollarbird,’ and ‘Katunga.’Wheat varietiesdiclofop-methylcompetitionherbicide performanceLOLRI
Type
Weed Management
Information
Weed Science , Volume 44 , Issue 3 , September 1996 , pp. 634 - 639
Copyright
Copyright © 1996 by the Weed Science Society of America 

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References

Literature Cited

1. Anon 1994. Common retail prices of chemicals used in winter crops. Page 56 in Mullen, C. and Dellow, J. J. eds. Weed Control in Winter Crops 1994. NSW Agriculture publication. Agdex 100/682.Google Scholar
2. Barton, D. L., Thill, D. C., and Bahman, S. 1992. Integrated wild oat (Avena fatua) management affects spring barley (Hordeum vulgare) yield and economics. Weed Technol. 6: 129–135.Google Scholar
3. Christensen, S. 1994. Crop weed competition and herbicide performance in cereal species and varieties. Weed Res. 34: 29–36.Google Scholar
4. Donald, C. M., and Hamblin, J. 1976. The biological yield and harvest index of cereals as agronomic and plant breeding criteria. Adv. in Agron. 28: 361–402.Google Scholar
5. Fryer, J. D., and Makepeace, R. J. 1977. Herbicides in plants. Pages 49–66 in Weed Control Handbook, Vol. 1. Principles. Blackwell Scientific Publications, London.Google Scholar
6. Gill, G. S. 1995. Development of herbicide resistance in annual ryegrass populations (Lolium rigidum Gaud.) in the cropping belt of Western Australia. Aus. J. Exp. Agric. 35: 67–72.Google Scholar
7. Lemerle, D., Cousens, R. D., Verbeek, B., and Fisher, J. A. 1994. The potential to breed more competitive wheat cultivars. Pages 19–21 in Paull, J., Dundas, I., Shepherd, K., and Hollamby, G., eds. Proc. 7th Assem. Wheat Breed. Soc. Aust. Google Scholar
8. Lemerle, D., Fisher, J. A., and Hinkley, R. B. 1993. Radiometry accurately measures chlorsulfuron injury to barley. Aust. J. Agric. Res. 44: 13–21.Google Scholar
9. Lemerle, D., Leys, A. R., Hinkley, R. B., and Fisher, J. A. 1985. Tolerances of wheat cultivars to preemergence herbicides. Aust. J. Exp. Agric. 25: 922–926.Google Scholar
10. Lemerle, D., Michael, P.W., and Sutton, B. G. 1979. The competitive abilities of wheat and triticale against different densities of Lolium rigidum. Pages 447–450 in Medd, R. W. and Auld, B. A., eds. Proc. 7th. conf. Asian-Pac. Weed Sci. Soc.Google Scholar
11. Lemerle, D. and Verbeek, B. 1995. Influence of soil water deficit on foliar-applied herbicides for wild oat (Avena sterilis) and annual ryegrass (Lolium rigidum). Plant Protec. Quartly. 10(4)143–147.Google Scholar
12. Lemerle, D., Verbeek, B., and Coombes, N. 1995. Losses in grain yield of winter crops from Lolium rigidum competition depend on crop species, cultivar and season. Weed Res. 35: 503–509.Google Scholar
13. Lutman, P.J.W., Dixon, F. L., and Risiott, R. 1993. The response of four spring-sown combinable arable crops to weed competition. Weed Res. 34: 137–146.Google Scholar
14. Major, D. J., Baret, F., and Guyot, G. 1990. A ratio vegetation index adjusted for soil brightness. Int. J. Rem. Sen. 11(5): 727–740.Google Scholar
15. Medd, R.W., Auld, B. A., Kemp, D. R., and Murison, R. D. 1985. The influence of wheat density and spatial arrangement on annual ryegrasss, Lolium rigidum Gaudin, competition. Aust. J. Agric. Res. 36: 361–371.Google Scholar
16. Northcote, K. H. 1971. A factual key for the recognition of Australian soils. Pages 73–81 in Rellim Technical Publications, Glenside, South Australia.Google Scholar
17. Olson, W. A. and Nalewaja, J. D. 1982. Effect of MCPA on 14C-diclofop uptake and translocation. Weed Sci. 30: 59–63.Google Scholar
18. Payne, R. W. and Genstat Committee. 1993. Genstat 5, Release 3 Reference Manual. Pages 539–583. Oxford University Press, Oxford, UK.Google Scholar
19. Pedersen, V. D., and Nutter, F. W. 1982. A low cost, portable multispectral radiometer for assessment of onset and severity of foliar diseases of barley. Proc. Int. Soc. Opt. Eng. 356: 126–130.Google Scholar
20. Reeves, T.G. 1976. Effect of annual ryegrass (Lolium rigidum Gaud.) on yield of wheat. Weed Res. 16: 57–63.Google Scholar
21. Reeves, T. G. and Brooke, H. D. 1977. The effect of genotype and phenotype on the competition between wheat and annual ryegrass. Pages 167–172 in Soerjani, M., Barnes, D. E., and Robson, T. O., eds. Proc. 6th conf. Asian-Pac. Weed Sci. Soc.Google Scholar
22. Richards, R.A. 1992. The effect of dwarfing genes in spring wheat in dry environmnets. II. Growth, water use and water-use efficiency. Aust. J. Agric. Res. 43: 529–539.Google Scholar
23. Richards, M. C. and Davies, D. H. K. 1991. Potential for reducing herbicide inputs/rates with more competive cereal cultivars. Pages 1233–1240 in Proc. British Crop Protec. Conf.Google Scholar
24. Salonen, J. 1992. Efficacy of reduced herbicide doses in spring cereals of different competitive ability. Weed Res. 32: 483–491.Google Scholar
25. Smith, D. F., and Levik, G. R. T. 1974. The effect of infestation by Lolium rigidum Gaud. (annual ryegrass) on the yield of wheat. Aust. J. Agric. Res. 25: 381–393.Google Scholar
26. Whiting, A. J., and Richards, M. C., and Brown, H. 1990. Crop competitiveness as an aid to weed control in cereals. Pages 197–200 in Organic and Low Input Agriculture. British Crop Protection Council Mono. No. 45.Google Scholar
27. Zadoks, J. C., Chang, T. T., and Konzak, C. F. 1974. A decimal code for the growth stages of cereals. Weed Res. 14: 415–421.Google Scholar