Podcasts

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Episode 249: The invisible fenceline – how virtual fencing is reshaping weed control

It’s an unusual thing to see – a mob of cattle grazing contentedly in a patch of paddock, held there by an invisible border. But virtual fencing technology is really taking off and is showing promise as a tool to help mixed farmers control weeds. On Heath Nickolls’ cattle and grain property near Pinnaroo in the South Australian mallee, the CSIRO’s Dr Rick Llewellyn is leading a GRDC and Australian Wool Innovation investment trialling virtual fencing to gain better crop integrated weed management. As Rick and Heath explain, a strip grazing trial of 40 Angus heifersis delivering promising results. Heath Nickolls, cattle grazing, Rick Llewellyn, crop protection, weeds pests diseases, innovation

Episode 248: Applying fungicides for economic return with Nick Poole

Nick Poole from FAR Australia provides an excellent explanation of how to target fungicide applications for the best economic return. He describes the value of focusing on critical growth stages and their ‘money leaves’, the best way to manage disease risk in crops before tillering, and the importance of protecting fungicide effectiveness for the long term. Nick Poole, FAR Australia, fungicide application, weeds pests diseases, crop protection

Episode 247: Triple threat – the three-pronged approach to tackling weeds

It’s been common practise across the southern grain growing region to wait for opening rains, before applying a knockdown herbicide, then seeding the crop. But new research is revealing weedsare better controlled by adopting a three-pronged approach of sowing early, at a high density crop seeding rate while also applying an efficient herbicide. As the University of Adelaide’s Dr Gurjeet Gill and Ben Fleet explain, the mid-trial results come from a five-year GRDC investment looking into weed management across a range of rainfall zones in SA, Vic and WA. weeds, crop protection, weeds pests diseases, Gurjeet Gill, Ben Fleet, weed management, herbicide

Episode 246: Fungicide risk factors with Dr Steven Simpfendorfer

While farmers typically spray fungicide to manage one disease, applications should be considered in a broader context. Dr Steven Simpfendorfer describes how spraying one pathogen can inadvertently encourage resistance in other pathogens that may be present. He outlines some typical examples, including rusts and powdery mildew in wheat; blackleg and sclerotinia in canola; as well as net blotches and powdery mildew in barley. fungicide resistance, disease, weeds pests diseases, crop protection, Steven Simpfendorfer, blackleg, sclerotinia, net blotches, powdery mildew, barley

Episode 245: Rising interest in sub-surface drainage

Sub-surface drainage, one of many water management options, is not widely adopted, for reasons that will be better understood during this project, with surveys used to understand current grower practice and opinions. Sub-surface drainage, one of many water management options, is not widely adopted, for reasons that will be better understood during this project, with surveys used to understand current grower practice and opinions. In total, the GRDC invests about $2 million nationally in projects addressing waterlogging, with work ranging from the new sub-surface drainage projects through to genetic research. waterlogging, agronomy, Philip Honey, Mark Preston, sub-surface drainage

Episode 244: The seedbank life of emerging problem weeds

The seedbank is the link between the current weed populations and future infestations. While the seedbank life is well understood for major weed species such as annual ryegrass, new research has filled the knowledge gap on the seedbank life of emerging weed species. The research, emanating from a five-year GRDC investment, has delivered a comprehensive manual on weed seedbanks. The Ecology of Major Emerging Weeds resource details more than 25 summer and winter weed species. In this podcast, we speak to the three weed scientists who delivered this research, Gurjeet Gill, Catherine Borger and Bhagirath Chauhan. Their insight on the headline findings and emerging issues in landscapes across the northern, southern and western regions is essential listening for all growers and advisers. emerging weeds, crop protection, weeds, annual ryegrass, Gurjeet Gill, Catherine Borger, Bhagirath Chauhan

Episode 243: Nutrient management for lateritic gravel soils

In Western Australia’s South West agricultural zone there are 3 million hectares of lateritic gravels or ironstone gravel soils. These are sandy soils that have a cemented laterite surface or caprock. Many growers are using contractors with specialised machinery that rips and pulverises this top-layer, making sowing easier and improving the likelihood of good crop establishment. What is also needed for developing crops is good nutrition and Lateritic soils bind-up phosphorus, an essential nutrient for young plants.With GRDC investment,on-farm trial are underway to test for nutrient levels in these soils and development nutrient packages for crop management. soils and nutrition, agronomy, western australia, lateritic, ironstone, sandy, soils, Ben Whisson, Rowan Astbury

Episode 242: Non-wetting soils and surfactants

When Western Australian Ag Research Company TrialCo signed on with GRDC to run a trial on non-wetting sandy soils in low rainfall country the last thing anyone expected was a wet start to the growing season. In this podcast TrialCo field operations manager and TrialCo’s executive officer outline the reasons for the trial and the methodology applied to evaluate the use of surfactants in sandy non-wetting soils. non wetting, soils, agronomy, soil and nutrition, trialco, Kylie Lockyer, Steve Penny

Episode 241: New knowledge on ironstone gravel soils

Innovative lab technology has helped uncover new information on the water and nutrient use efficiency of ironstone gravel soils. It's a first for the grains industry and a big step forward in managing this often-underperforming soil type. ironstone gravel, soil, soil and nutrition, agronomy, Fran Brailsford

Episode 240: Fungicide resistance in canola crops with Dr Steve Marcroft

Generous rain and high prices have increased the economic risk from Sclerotinia and blackleg of canola this season. Dr Steve Marcroft outlines the very real risk of fungicide resistance developing in blackleg of canola in Australia – and how growers can achieve sustainable disease control. fungicide resistance, canola, crops, Steve Marcroft

Episode 239: Fungicide/Mode of Action rotation and mixtures with Fran Lopez-Ruiz

The ‘Fungicide Resistance Five’ is the basis for an integrated disease management strategy that growers can use on-farm to reduce fungicide resistance pressure on crop pathogens. This six-part podcast series, produced through the Australian Fungicide Resistance Extension Network (AFREN), unpacks the individual elements of the strategy to inform growers why and how they should minimise the risk of fungicide resistance developing in their paddocks. AFREN is a significant GRDC investment that brings together a national network of regional plant pathologists, fungicide resistance experts and communications and extension specialists. It is co-ordinated through the Centre for Crop Disease Management (CCDM), a co-investment between the GRDC and Curtin University. Using fungicide mixtures and rotating between Mode of Action groups is vital to eliminate resistant pathogen strains. Fungicide resistance specialist Dr Fran Lopez Ruiz from the Centre for Crop Disease Management at Curtin University highlights the importance of a dynamic spray program. AFREN, Australian Fungicide Resistance Extension Network, fungicide resistance, disease, crop protection, Fran Lopez-Ruiz

Episode 238: Strategic fungicide application with Nick Poole

The ‘Fungicide Resistance Five’ is the basis for an integrated disease management strategy that growers can use on-farm to reduce fungicide resistance pressure on crop pathogens. This six-part podcast series, produced through the Australian Fungicide Resistance Extension Network (AFREN), unpacks the individual elements of the strategy to inform growers why and how they should minimise the risk of fungicide resistance developing in their paddocks. AFREN is a significant GRDC investment that brings together a national network of regional plant pathologists, fungicide resistance experts and communications and extension specialists. It is co-ordinated through the Centre for Crop Disease Management (CCDM), a co-investment between the GRDC and Curtin University. Nick Poole, AFREN, Centre for Crop Disease Management, CCDM, disease, crop protection

Episode 237: Non-chemical strategies to reduce disease pressure with Dr Tara Garrard

The ‘Fungicide Resistance Five’ is the basis for an integrated disease management strategy that growers can use on-farm to reduce fungicide resistance pressure on crop pathogens. This six-part podcast series, produced through the Australian Fungicide Resistance Extension Network (AFREN), unpacks the individual elements of the strategy to inform growers why and how they should minimise the risk of fungicide resistance developing in their paddocks. AFREN is a significant GRDC investment that brings together a national network of regional plant pathologists, fungicide resistance experts and communications and extension specialists. It is co-ordinated through the Centre for Crop Disease Management (CCDM), a co-investment between the GRDC and Curtin University. South Australian plant pathologist Dr Tara Garrard covers the range of agronomic practices growers have at their disposal to reduce disease pressure, limit fungicide applications and lower the risk of promoting fungicide resistance in their crops. disease, AFREN, Tara Garrard, CCDM, Centre for Crop Disease Management, Australian Fungicide Resistance Extension Network

Episode 236: The value of crop rotation with Geoff Thomas

The ‘Fungicide Resistance Five’ is the basis for an integrated disease management strategy that growers can use on-farm to reduce fungicide resistance pressure on crop pathogens. This six-part podcast series, produced through the Australian Fungicide Resistance Extension Network (AFREN), unpacks the individual elements of the strategy to inform growers why and how they should minimise the risk of fungicide resistance developing in their paddocks. AFREN is a significant GRDC investment that brings together a national network of regional plant pathologists, fungicide resistance experts and communications and extension specialists. It is co-ordinated through the Centre for Crop Disease Management (CCDM), a co-investment between the GRDC and Curtin University. Geoff Thomas, Australian Fungicide Resistance Extension Network, AFREN, fungicide resistance, Centre for Crop Disease Management, CCDM, disease, crop protection