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Euphytica

, Volume 163, Issue 3, pp 355–366 | Cite as

Selection of cereals for weed suppression in organic agriculture: a method based on cultivar sensitivity to weed growth

  • Stephen HoadEmail author
  • Cairistiona Topp
  • Ken Davies
Article

Abstract

Cereal cultivars conferring a high degree of crop competitive ability, especially against aggressive weeds, are highly beneficial in organic farming as well as other farming systems that aim to limit the use of herbicides. In this study, thirteen winter wheat cultivars, plus one spring wheat and one winter oat were assessed for their competitive ability at key growth stages, across three seasons. The natural population of weed species was allowed develop without agronomic intervention. Weed suppression ability for each cultivar (S var) was calculated as the difference between weed growth in plots for each cultivar and the maximal weed growth (W max) from adjacent uncropped areas. The sensitivity of S var in response to changes in weed growth (S var W ) was derived from the linear regression coefficient of S var plotted against W max. There was significant variation in S var between cultivars and strong evidence for cultivars to vary in S var W . Amongst groups of cultivars with similar levels of S var some could be defined as being of higher or lower sensitivity to changes in weed growth. Some cultivars also had relatively good S var at high levels of weed growth. The use of both weed suppression ability and sensitivity across different levels of weed growth or weed populations has considerable potential for selecting new cultivars suitable for organic agriculture. Ideally new cultivars will be selected on the basis of high S var and/or low S var W . This analysis provides the means to measure sensitivity of cultivar performance across a range of favourable and unfavourable conditions.

Keywords

Weed suppression Cereal cultivars Winter wheat Variety selection Organic agriculture 

Notes

Acknowledgements

The authors are grateful for funding from the EU and the Scottish Government and would like to acknowledge the support of our research partners from Bonn, Madrid and Warsaw in the EU funded project on ‘Strategies of Weed Control in Organic Farming (WECOF)’. The authors would also like to acknowledge the support of colleagues in the COST Action 860 on ‘Sustainable low-input cereal production: required variety characteristics and crop diversity’.

References

  1. Acciaresi HA, Chidichimo Ho, Sarondon SJ (2001) Traits related to competitive ability of wheat (Triticum aestivum) varieties against Italian ryegrass (Lolium multiflorum). Biol Agric Hortic 19:275–286Google Scholar
  2. Bertholdsson N-O (2005) Early vigour and allelopathy—two useful traits for enhanced barley and wheat competitiveness against weeds. Weed Res 45:94–102CrossRefGoogle Scholar
  3. Beveridge LE, Naylor REL (1999) Options for organic weed control—what farmers do. In: Proceedings 1999 Brighton crop protection conference: weeds, pp 939–944Google Scholar
  4. Bond W, Grundy AC (2001) Non-chemical weed management in organic farming systems. Weed Res 41:383–405CrossRefGoogle Scholar
  5. Brennan JP, Lemerle D, Martin P (2001) Economics of increasing wheat competitiveness as a weed control weapon. Contributed paper presented to the 45th annual conference of the Australian Agricultural and Resource Economics SocietyGoogle Scholar
  6. Coleman RD, Gill GS, Rebetzke GJ (2001) Identification of quantitative trait loci for traits conferring weed competitiveness in wheat (Triticum aestivum). Aust J Agric Res 52:1235–1246CrossRefGoogle Scholar
  7. Cosser ND, Gooding JM, Thompson AJ, Froud-Williams RJ (1997) Competitive ability and tolerance of organically grown wheat cultivars to natural weed infestations. Ann Appl Biol 130:523–535CrossRefGoogle Scholar
  8. Cousens RD, Barnett AG, Barry GC (2003) Dynamics of competition between wheat and oats: I. Effects of changing the time of phenological events. Agron J 95:1293–1304Google Scholar
  9. de Vida FBP, Laca EA, Mackill DJ, Fernandez GM, Fischer AJ (2006) Relating rice traits to weed competitiveness and yield: a path analysis. Weed Sci 54:1122–1131CrossRefGoogle Scholar
  10. Didon UME, Hansson ML (2002) Competition between six spring barley (Hordeum vulgare ssp. vulgare L.) cultivars and two weed flora in relation to interception of photosynthetic active radiation. Biol Agric Hortic 20:257–273Google Scholar
  11. Finlay KW, Wilkinson GN (1963) The analysis of adaptation in a plant breeding programme. Aust J Agric Res 14:742–754CrossRefGoogle Scholar
  12. Gibson KD, Fischer AJ, Foin TC, Hill JE (2003) Crop traits related to weed suppression in water-seeded rice (Oryza sativa L.). Weed Sci 51:87–93CrossRefGoogle Scholar
  13. Gooding MJ, Thompson AJ, Davies WP (1993) Interception of photosynthetically active radiation, competitive ability and yield of organically grown wheat varieties. Asp Appl Biol, Physiol Varieties 34:355–362Google Scholar
  14. Hoad SP, Neuhoff, Davies DHK (2005) Field evaluation and selection of winter wheat for competitiveness against weeds. In: Proceedings of the COST SUSVAR/ECO-PB workshop on organic plant breeding strategies and the use of molecular markers, Driebergen, Netherlands, pp 61–66Google Scholar
  15. Hoad SP, Davies DHK, Topp CFE (2006a) How to select varieties for organic farming: science and practice. Aspects of Applied Biology 79. What will organic farming deliver? COR 2006 Heriot-Watt University, Edinburgh 18–20 September 2006, pp 117–120Google Scholar
  16. Hoad SP, Davies DHK, Topp CFE (2006b) Designing crops for low input and organic systems: Enhancing wheat competitive ability against weeds. In: Proceedings crop protection in Northern Britain, pp 157–162Google Scholar
  17. Huel DG, Hucl P (1996) Genotype variation for competitive ability in spring wheat. Plant Breed 115:325–329CrossRefGoogle Scholar
  18. Kirigwi FM, van Ginkel M, Trethowan R, Sears RG, Rajaram S, Paulsen GM (2004) Evaluation of selection strategies for wheat adaptation across water regimes. Euphytica 135:361–371CrossRefGoogle Scholar
  19. Korres NE, Froud-Williams RJ (2002) Effects of winter wheat cultivars and seed rate on the biological characteristics of naturally occurring weed flora. Weed Res 42:417–428CrossRefGoogle Scholar
  20. Lammerts van Bueren ET, Struik PC, Jacobsen NE (2002) Ecological concepts in organic farming and their consequences for an organic crop ideotype. Neth J Agric Sci 50:1–26Google Scholar
  21. Le Gouis J, Béghin D, Heumez E, Pluchard P (2000) Genetic differences for nitrogen uptake and nitrogen utilisation efficiencies in winter wheat. Eur J Agron 12:163–173CrossRefGoogle Scholar
  22. Lemerle D, Verbeek B, Cousens RD, Coombes NE (1996) The potential for selecting wheat varieties strongly competitive against weeds. Weed Res 36:505–513CrossRefGoogle Scholar
  23. Lemerle D, Gill GS, Murphy CE, Walker SR, Cousens RD, Mokhtari S, Peltzer SJ, Coleman R, Luckett DJ (2001) Genetic improvement and agronomy for enhance wheat competitiveness with weeds. Aust J Agric Res 52:527–548CrossRefGoogle Scholar
  24. Lemerle D, Smith A, Verbeek B, Koetz E, Lockley P, Martin P (2006) Incremental crop tolerance to weeds: a measure for selecting competitive ability in Australian wheats. Euphytica 149:85–95CrossRefGoogle Scholar
  25. Mason HE, Spaner D (2006) Competitive ability of wheat in conventional and organic management systems; a review of the literature. Can J Plant Sci 86:333–343Google Scholar
  26. Neuhoff D, Hoad S, Köpke U, Davies K, Gawronski S, Gawronska H, Drews S, Juroszek P, de Lucas Bueno C, Zanoli R (2005) Strategies of weed control in organic farming (WECOF). Final Report of FP 5 European Combined Project ‘WECOF’, online publication: http://www.wecof.uni-bonn.de
  27. Saulescu NN, Ittu G, Mustatea P, Simion G (2005) Improved nitrogen response as an objective in wheat breeding. Rom Agric Res 22:1–4Google Scholar
  28. Tottman DR, Broad H (1987) The decimal code for the growth stages of cereals, with illustrations. Ann Appl Biol 110:441–454CrossRefGoogle Scholar
  29. Truberg B, Huhn M (2002) Contributions to the analysis of genotype × environment interactions: comparison of different parametric and non-parametric tests for interactions with emphasis on crossover interactions. J Agron Crop Sci 185:267–274CrossRefGoogle Scholar
  30. Watson PR, Derksen DA, van Acker RC (2006) The ability of 29 barley cultivars to compete and withstand competition. Weed Sci 54:783–792CrossRefGoogle Scholar
  31. Wolfe M, Lammerts van Bueren ET, Baresel JP, Desclaux D, Goldringer I, Hoad S, Kovacs G, Löschenberger F, Miedaner T, Osman AM, Østergård H (2008) Developments in breeding cereals for organic agriculture. Euphytica. doi: 10.1007/s10681-008-9690-9
  32. Zhao DL, Atlin GN, Bastiaans L, Spiertz JHJ (2006) Cultivar weed-competitiveness in aerobic rice: heritability, correlated traits, and the potential for indirect selection in weed-free environments. Crop Sci 46:372–380CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  1. 1.Crop and Soil Systems Research GroupScottish Agricultural CollegeEdinburghUK
  2. 2.Land Economy and Environment Research GroupScottish Agricultural CollegeEdinburghUK
  3. 3.Agronomy Select ServicesScottish Agricultural CollegePenicuikUK

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