Implications Of Continuing Dry Conditions On Cereal Disease Management

GRDC - Steven Simpfendorfer (NSW DPI)

Type: Research Paper
Knowledge level: Advanced

Farm Table says:

The authors of this paper note in the conclusion: “The perpetual risk as a plant pathologist is the perception that we are always the bearer of bad news or ‘of the grim reaper mentality’. Elevated risk of stubble- and soil-borne diseases in 2020 is inevitable given continuing dry conditions which have prolonged survival of pathogen inoculum. However, practical steps can be taken to identify the level of risk and strategies implemented to minimize but not necessarily fully eliminate disease impacts on wheat and barley crops in 2020”. Please access the full paper via the link below if this research interests you.

The take home messages from this GRDC funded research are below. Please access the full via the link below for methodology, references, acknowledgements and discussion.

Take home messages from the paper include:

  • Due to a combination of factors there is likely to be increased cereal plantings in 2020, once the opportunity arises
  • Failed pastures with decent levels of grass development are potentially high risk scenarios for cereal diseases in 2020 as grasses host many of the causal pathogens
  • Unfortunately, prolonged dry conditions increase the risk of cereal diseases including Fusarium crown rot and common root rot
  • There has also been a decline in populations of beneficial arbuscular mycorrhizae fungi (AMF)
  • However, steps can be taken to minimise impacts which include:
    1. Know before you sow (e.g. PREDICTA®B)
    2. Implementing pre-sowing management options
    3. Sowing quality seed known to have both good germination and vigour
    4. Assessing root health and infection levels around heading – you need to ‘dig deeper’ than just leaf diseases!

2020 - Australia - GRDC - Steven Simpfendorfer (NSW DPI)
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