Abstract
Poor reliability of autumn breaks, short springs and drought have reduced the reliability of traditional annual legume species such as subterranean clover and annual medics. Lucerne has been used in many areas to at least partially fill the gap left by traditional legumes, but soil acidity can limit its adaptation and maintaining adequate groundcover in lucerne paddocks can be a problem in many instances. Over the past few decades there has been considerable development of annual legume species with improved adaptation to climatic and soil challenges. Both 2018 and 2019 have allowed assessment of production and survival attributes of a range of annual legumes under extreme drought conditions in the GRDC northern region. In both years, biserrula has exhibited the capacity to produce viable quantities of seed to facilitate ongoing regeneration. This paper reports on the seed production achieved by biserrula under drought conditions and also identifies other species as having considerable potential under such conditions. The principles of use of these hard seeded species in rotations is also briefly discussed.
| Original language | English |
|---|---|
| Title of host publication | Grains research update |
| Subtitle of host publication | Driving profit through research |
| Publisher | GRDC |
| Pages | 32-36 |
| Number of pages | 5 |
| Publication status | Published - 11 Mar 2020 |
| Event | GRDC Grains Research Update (Lake Cargelligo) - Lake Cargelligo Bowling Club, Lake Cargelligo, Australia Duration: 11 Mar 2020 → 11 Mar 2020 https://grdc.com.au/events/list/submitted/grdc-grains-research-update-lake-cargelligo |
Conference
| Conference | GRDC Grains Research Update (Lake Cargelligo) |
|---|---|
| Abbreviated title | Driving Profit Through Research |
| Country/Territory | Australia |
| City | Lake Cargelligo |
| Period | 11/03/20 → 11/03/20 |
| Other | New research that’s ready for the paddock in 2020 at the Lake Cargelligo GRDC Grains Research Update. Discuss how to make practical use of the latest information with researchers, agronomists and leading growers. Topics: New frontiers in cereal breeding for a changing climate - long coleoptile wheat, crop competitive varieties, new wheat types for late sowing windows and adaptation to high temperature stress during grain fill. Greg Rebetzke (CSIRO) Drivers of yield stability in wheat and barley- picking a winner in variable seasons. David Burch (NSW DPI) Pulses in Lake Cargelligo farming systems. Tony Swan (CSIRO) Fixing more N by improving inoculant performance in suboptimal / acid soil conditions. Belinda Hackney (NSW DPI) Measuring, using and budgeting P in lower rainfall zones - are there options to spend less after a dry year? Graeme Sandral (NSW DPI) and Jim Laycock (Incitec Pivot) Lasers, machine learning, weed recognition software and new innovations in weed management. Guy Coleman (USyd) Risks and rewards of cover cropping - how effective are cover crops at increasing fallow efficiency and influencing soil health? What about the water they consume - how much do they use and is this offset by increased fallow efficiency? Col McMaster (NSW DPI) Decisions for a profitable 2020 - picking the right variety for the situation, managing P fertiliser cost, weed planning and cereal disease after the drought. Discussion session led by Andrew McFadyen (McFadyen Ag. Consulting), Col McMaster (NSW DPI), Graeme Sandral (NSW DPI) and Helen McMillan (CWFS) |
| Internet address |