Browse GRDC Podcasts

Episode 203: The weeds are evolving – annual ryegrass and wild radish

Through the careful analysis of more than 18 years of paddock data, we now know that cropping weeds constantly evolve to evade all forms of weed control, including non-herbicide strategies. In this podcast, Australian Herbicide Resistance Initiative (AHRI) research agronomist, Dr Mike Ashworth, discusses the evolution of annual ryegrass and wild radish in our cropping systems, and how this information can be used to make strategic weed management decisions. Mike Ashworth, AHRI, Australian Herbicide Resistance Initiative, annual ryegrass, wild radish, weeds, crop protection

Episode 202: Driving profit through supporting good mental health

Even though consultants haven’t traditionally seen discussions with growers about stress management and mental health as part of their role it actually makes good business sense. The ‘slow creep’ of drought-related stress is detrimental to growers if unaddressed, but supporting growers to understand and manage their stress helps to prevent developing mental health problems, while also supporting future relationships and business outcomes. Consultants are skilled to support grower’s decision-making, and this becomes crucial in adverse times to assist them to understand the facts, their options and ways of making informed decisions. Letitia Cross, mental health, farm business, business management

Episode 201: Rhizoctonia identification and management

Rhizoctonia will cause yield losses especially where cereal crops have had a dry finish, but because this disease doesn’t like moist soils, those growers who have received late spring rains are unlikely to notice any impact. What this season does emphasise, however, is the need to monitor crops as what might appear completely healthy above ground could be significantly impacted below ground. One of the country’s leading authorities on rhizoctonia is Alan McKay, principal scientist soil biology and molecular diagnostics with the South Australian Research and Development Institute (SARDI), which is the research division of the SA Department of Primary Industries and Regions (PIRSA). In this podcast, Dr McKay discusses rhizoctonia identification and management. Rhizoctonia, disease, Alan McKay, crop protection

Episode 200: Soil Wetter And Seeder Strategies For Non - Wetting Sands

An estimated 12.5 million hectares of sandy soils in southern and Western Australia are deemed at moderate and high risks of water repellence. In this podcast, researcher Dr Jack Desbiolles from the University of South Australia evaluates the effectiveness of available soil wetter chemistries and seeding tactics to improve crop productivity in non-wetting sandy soil. The research findings explored in this podcast are the result of two field trials that were run in 2018 and 2019, made possible through GRDC investment. The trials were conducted in a 270mm growing season rainfall zone at Murlong on the Eyre Peninsula, namely a soil wetter evaluation trial and a seeder strategy evaluation trial, aiming to compare a number of seeding strategies. Jack Desbiolles, soil constraints, agronomy, soil and nutrition, wetting sands

Episode 199: New pulse disease ratings clarify definitions

We all look for disease ratings when selecting a variety. Is it moderately resistant (MR) or moderately susceptible (MS)? What do MR and MS and all of the other designations actually mean? When it comes to pulses, in the past those ratings have meant different things to different people – but now a uniform description has been developed. Agriculture Victoria plant pathologist, John Fanning explains how it will work. John Fanning, crops, pulses, disease, crop protection

Episode 198: Optimal Flower Periods And Climate Change

A key consideration when growing a cereal grain crop such as wheat is knowing a variety’s Optimal flowering period. With that knowledge sowing times can be planned to minimise risks such as frost damage and heat stress, and maximise crop productivity. But what happens when the Optimal Flowering Period moves, as a result of climate change. Andrew Fletcher, climate change, optimal flowering period, frost damage, heat stress, climate, innovation, CSIRO

Episode 197: Frost Damage ID In Canola

Frost damage to Canola is a significant annual issue for the nation’s grains industry. Spring frosts in particular are the most economically damaging for growers as crop yields and quality are developing at this time. In this podcast NSW DPI crop physiologist and frost researcher Dr Rajneet Uppal discusses when and where to search within a canola crop for frost damage, how to identify pod damage and recommendation for minimising frost risk generally. Dr Uppal’s work is being conducted as part of the NSW DPI and GRDC Grains Agronomy and Pathology Partnership (GAPP). Her work is pioneering infield testing methodologies to help better understand the impacts; single and multiple frost events occurring at different growth stages in canola have on grain production. frost damage, frost, canola, agronomy, Rajneet Uppal, oilseeds, crops

Episode 196: Australian Fungicide Resistance Extension Network

Accessing the latest information on fungicide resistance has never been easier – thanks to the newly established Australian Fungicide Resistance Extension Network (AFREN). In this podcast, Dr Kylie Ireland from the Centre for Crop and Disease Management (CCDM) discusses what the network has to offer, and the top five fungicide best management practices. AFREN has been established by the GRDC to develop and deliver a fungicide resistance management guide, workshops, information sessions and webinars, as well as crop-specific factsheets, updates and email alerts. CCDM, Centre for Crop and Disease Management, Australian Fungicide Resistance Extension Network, AFREN, disease, crop protection, Kylie Ireland

Episode 195: On farm quality measurement for pulses

A missing link will soon be added to the pulse chain. A new and quite simple way of measuring the quality of pulses on farm is being developed that has the potential to add some serious cash to the bottom line of farmers. Work is being undertaken at the Agriculture Victoria laboratory at Horsham in Victoria, where this podcast was recorded. crops, pulses, Cassandra Walker

Episode 194: SDHI Resistance Discovered In SFNB Of Barley In WA

Western Australian growers are urged to be on alert following the discovery of succinate dehydrogenase (SDHI, Group 7) resistance in spot form of net blotch (SFNB) in barley crops in the WA grainbelt. The resistance has been uncovered by the Centre for Crop and Disease Management (CCDM), which is a co-investment by the GRDC and Curtin University. In this podcast, CCDM researcher Dr Fran Lopez shares the details of this significant discovery and its consequences for the grains industry. Crop and Disease Management, CCDM, spot form of net blotch, succinate dehydrogenase, Western Australia, Fran Lopez, disease, crop protection

Episode 193: Nutrient loss from hay cutting

Deciding on what portion of your winter cereal crop will be cut for hay, can be a complex decision. One important factor is the amount of nutrient that is exported in the hay and the cost of replacing that nutrient. On this podcast, crop nutrition specialist Rob Norton discusses some of the critical issues you need to keep in mind when deciding your hay cutting strategy. hay, hay cutting, nutrient loss, Rob Norton, soil and nutrition

Episode 192: Spot Form Net Blotch Fact Sheets now available

Spot Form Net Blotch is the most common foliar disease of barley in Australia and given the right season, it can cause significant losses. A new fact sheet is now available that details the very latest knowledge about the disease and its management. This podcast features Agriculture Victoria plant pathologist, Mark McLean who has devoted the better part of two decades researching the disease. Spot Form Net Blotch, disease, crop protection, Mark McLean, foliar disease, barley

Episode 191: Alternative winter and summer legume crops tested for Southern Region

A summer rainstorm can restore your soil moisture profile after harvest, but it could also deliver enough of the wet stuff to grow a summer crop. On this podcast we look at a series of trials that are testing the growability of a range of legumes that have been grown mostly much further north. crops, pulses, legumes, soil moisture, James Nuttall

Episode 190: The Lowdown On Subsurface Acidity

When it comes to managing subsurface acidity, the message is clear - it’s much better to prevent subsurface acidity than it is to treat it. Across Australia’s growing regions, subsurface acidity has largely gone undetected and untreated, but a significant amount of research is underway to help growers address this important issue. In this podcast, Primary Industries and Regions SA soil consultant Melissa Fraser shares the latest subsurface acidity research findings and management advice. subsurface acidity, melissa fraser, soil constraints, agronomy, soil and nutrition