Field evaluation of Australian wheat genotypes for competitive traits and weed suppression

James M Mwendwa, William Brown, K M Shamsul Haque, Graeme Heath, Hanwen Wu, Jane Quinn, Jeffrey Weidenhamer, Leslie A. Weston

Research output: Book chapter/Published conference paperConference paperpeer-review


In 2014 and 2015, replicated field trials were performed at commercial paddocks in moderate to low rainfall zones at Wagga Wagga and Condobolin NSW, respectively. In 2014, a total of 11 winter wheat cultivars (Triticum aestivum L.) representing four major breeding family lines grown in Australia were evaluated with 13 cultivars assessed in 2015. At each site, crop and/or weed growth were monitored at various stages of growth: early season (tillering), vegetative, grain filling, harvest and post-harvest. Significant differences between wheat cultivar and location were observed for crop biomass, early vigour, leaf area index (LAI), weed number, weed biomass, canopy architecture and yield in both 2014 and 2015. Differences in weed suppression were largely impacted by crop architecture and phenology early in the growing season. Cultivar competitive traits were also influenced by both genotype and environmental factors, as shown by clear differences in cultivar performance, yield and weed suppression among both locations. Cultivars Condo and Espada were superior performers for yield and weed suppression in both locations and years analysed. This data supports the concept that choice of wheat cultivar can prove to be a cost effective means of weed management.
Original languageEnglish
Title of host publicationProceedings of the 20th Australasian Weeds Conference (2016)
Subtitle of host publicationScience, Community and Food Security: the Weed Challenge
EditorsRod Randall, Sandy Lloyd, Catherine Borger
Place of PublicationPerth
PublisherWeed Society of Western Australia
Number of pages6
ISBN (Electronic)978-0-646-96031-9
Publication statusPublished - 2016
Event20th Australasian Weeds Conference (2016) - Pan Pacific Hotel, Perth, Australia
Duration: 11 Sep 201615 Sep 2016 (Conference proceedings) (conference website)


Conference20th Australasian Weeds Conference (2016)
Abbreviated titleScience, Community and Food Security: the Weed Challenge
Internet address

Grant Number

  • GRDC UCS 00020
  • GRDC UCS 00022
  • GRDC UCS 00023


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