Invited Speaker: A/Prof Emlyn Williams

January 20, 2020

The application of CycDesigN in designing experiments for use in agriculture


Emlyn worked as a statistical consultant with CSIRO for 35 years before becoming Director of the Statistical Consulting Unit at ANU (2006-2013). He has wide experience in the application of statistical methods and has published around 150 journal articles and 2 books. In 2019 he received the E.A. Cornish Award from the Australasian Region of the International Biometric Society in recognition of his longtime service to the Biometric Society and to the advancement of Biometry. Emlyn's main areas of research interest are in the design and analysis of experiments and the use of mixed models in practice. He is also actively involved in the development and maintenance of the design generation package CycDesigN (http// Emlyn has given many short courses in Australia and overseas with a focus on statistical training in conjunction with computer packages. He has served on the Central Council of the International Biometric Society and has been an Associate Editor for the Australian and New Zealand Journal of Statistics and Biometrics and was a coeditor of the JABES 2020 special issue "Recent advances in design and analysis of experiments and observational studies in agriculture".

Talk Overview:

CycDesigN version 8.0 (CD8) has extensive features for the design of field and glasshouse experiments, including plant phenotyping. This talk will focus on major upgrades in the construction of partially replicated (p-rep) designs for one or more locations. Examples of neighbour balance and evenness of distribution (NB & ED) designs as applied to resolvable, non-resolvable and p-rep designs will also be presented.

  • Piepho, H.P., Michel, V. & Williams, E.R. (2018). Neighbour balance and evenness of distribution of treatment replications in row-column designs. Biometrical Journal 60, 1172-1189.
  • Piepho, H.P., Williams, E.R. & Michel, V. (2021). Generating row-column field experimental designs with good neighbour balance and even distribution of treatment replications. Journal of Agronomy and Crop Science 207, 745-753.