Plang Growth Regulators in Scope CL barley

By Kelly Angel (BCG) and Rob Launder (Agritech Rural)

Key messages:

  • BCG SRR 2014 FRONT AND BACK COVERIn 2014 – a dry season with limited growth and yield at the trial site
    – Plant Growth Regulators (PGRs) were not economically viable or
    worthwhile.
  • PGR use in a tough season may pose more risk than benefit to
    cereal crops; their use should be gauged on seasonal outlooks.
  • In 2014, reduction in plant height was greatest with a PGR applied
    either as a single late, or a split application, not an early application.
  • The combination of a fungicide such as Amistar Xtra with a PGR
    such as Moddus Evo, appears to increase the effect of the PGR on
    plant growth.

In 2014, BCG, in collaboration with Agritech Rural, investigated the use of Moddus
Evo, applied with and without a fungicide at a wide range of application timings.

The aim of the investigation was determine whether Moddus Evo, applied with and without fungicide at different timings, influenced the level of lodging and head loss in Scope CL barley, and to compare its performance against other PGRs when applied at GS31. The influence on stubble and crop residue was also examined as part of this trial.

The seasonal conditions experienced at the Horsham site in 2014 were very different from those of 2013. After a reasonable start, with good crop emergence and early growth, rainfall was limited and patchy and did not create the high growth situations within which the performance of PGRs and fungicides can be rigorously tested.

The NDVI assessment conducted at GS31, prior to the first treatment application, showed no difference between treatments, indicating even emergence and good early growth in all plots.

Despite the different rates and timings of Amistar Xtra and Moddus Evo, there was no significant difference in yield between any of the treatments in 2014, a result different from the 2013 findings.

Attachment 1 - BCG SRR 2014 AGRONOMIC PRACTICES - PGR in SCOPE CL_Page_1Attachment 1 - BCG SRR 2014 AGRONOMIC PRACTICES - PGR in SCOPE CL_Page_2

Attachment 1 - BCG SRR 2014 AGRONOMIC PRACTICES - PGR in SCOPE CL_Page_3Attachment 1 - BCG SRR 2014 AGRONOMIC PRACTICES - PGR in SCOPE CL_Page_4Attachment 1 - BCG SRR 2014 AGRONOMIC PRACTICES - PGR in SCOPE CL_Page_5Attachment 1 - BCG SRR 2014 AGRONOMIC PRACTICES - PGR in SCOPE CL_Page_6

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About BCG

Birchip Cropping Group Inc. (BCG) is a not-for-profit agricultural research and extension organisation led by farmers in the Victorian Wimmera and Mallee.
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One Response to Plang Growth Regulators in Scope CL barley

  1. Pingback: 2014 field trials | The stubble project: Victoria and Tasmania

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