Big is definitely the case when it comes to spray nozzle sizes, particularly when spraying in sensitive areas during summer. On this podcast, spray expert Bill Gordon details new label requirements, including nozzle sizes, when using 2-4D chemistries. Bill also re-assures us that it’s still possible to do a good spray job with larger nozzles.

A leading science communicator says rather than educating the general public about farming, farmers should ensure that urban people trust farmers to have their best interests at heart. Heather Bray, from the University of Western Australia, says trust in farmers is more important than how deeply city people understand the business of farming.

Research undertaken by the Northern Grower Alliance has cast new light on the timing and method of nitrogen application. On this podcast, NGA’s Richard Daniel outlines the latest thinking when it comes to applying nitrogen to crops.

Liming to maintain good soil pH levels and avoiding yield losses is just as important as applying fertiliser for maximising yields. If growers let soil pH levels in the topsoil run-down (pH in CaCl2 < 5.0) they are at risk of creating soil acidity issues at depth which are harder and more expensive to treat. In general, not enough lime has been applied frequently enough to address acidification occurring within the whole soil profile, so soil test to depth and calculate lime requirements for 0-10cm, 10-20cm and 20-30cm, not just the top 10cm of soil.

A common pest for canola growers to monitor each Spring is the Cabbage Aphid. DPRID research officer Dusty Severtson describes where within the crop to check for the aphid and the use of monitoring tools such as the Crop Scout app to accurately calculate aphid numbers.

Snails may be slow to move, but they are quick to survive baits during late Spring and Summer. This surprising development has been revealed as a result of research into snail mortality on the York Peninsula. This fact and several other tips for managing snails are explained by entomologist Helen Brodie on this podcast.

Nitrogen fertiliser is arguably a farmer’s biggest variable cost, year on year. Providing the correct amount of nitrogen to a growing crop is the key to success. But how best to deliver that nitrogen without seeing it lost to the environment before it reaches the crop? That was the key question for some recent research in western Victoria – research that is still ongoing in many parts of the southern and northern region.

Farmers in blackleg prone areas of Australia are generally competent in managing the disease in their canola crops. That is until the recent advent of blackleg infection of the upper canopy. This new way blackleg has developed ways to attack canola crops is the focus of this podcast featuring Steve Marcroft from Marcroft Pathology.

Valuable frost research is equipping grain growers with practical information on how to identify frost damage in cereal crops. In this podcast WA Department of Primary Industries & Regional Development research officer, Dr Ben Biddulph, discusses what to look for, when and where, to identify frost damage.

Blackleg is a common yet economically serious canola disease in Western Australia (WA). While it has the potential to cause severe yield loss, the good news is that it can be successfully managed. Dr Khangura joins Deb Bishop to discuss blackleg management tactics and GRDC resources that are available to help WA growers combat the disease.

With water such a valuable commodity nowadays, it’s little wonder that irrigators ask themselves whether they are better off selling their water or using it to grow out a crop. It’s a tough question. So GRDC last year asked the Irrigated Cropping Council to see if they could come up with some answers.

Trials are underway to determine accurate control thresholds for Russian Wheat Aphid under Australian conditions. The national trials are also looking at the potential impact of the insect on Australian yields. On this podcast, SARDI Entomologist Maarten van Helden discusses this important work.

Diamondback Moth is an occasional pest of canola, but severe infestations of adults and/or caterpillars can cause up to 80 per cent yield losses in canola and other brassica crops. This pest can also rapidly develop insecticide resistance and an integrated pest management plan is advised for sustainable control.

This episode is focussed on the second research component of the Frost Mapping project, assessing frost damage before its visible to the naked eye, using the Electromagnetic spectrum. This is a collaborative project involving Mick Faulkner, the University of Western Australia, Agriculture Victoria and grain growers, including David Mitchell from Mintaro in South Australia’s north eastern grain growing zone.

A research effort led by CSIRO, with GRDC investment, has developed a modeling tool that could in future years help growers rapidly understand the extent of crop damage following a frost event to aid with timely decision-making post-frost. The Frost Mapping project is one of a number of projects related to GRDC’s key investment target strategy for frost.

Using a GRDC/RCSN ‘local project’ investment into tactical fungicide use involving a local western region farm adviser is addressing the issue of managing spot form of net blotch (SFNB) in barley crops. This disease is a R&D priority for the Regional Cropping Solutions Network Kwinana West (RCSN) group and for the GRDC Western Regional Panel. This podcast highlights how local research results are providing solutions for this disease, especially the economics of fungicide use.

Glyphosate resistance is on the rise in Australia’s grain growing regions. With 17 key weed species already identified as resistant, sustainable herbicide practices have never been so important. In this podcast Andrew Storrie from AGRONOMO discusses what herbicide resistance (or susceptibility) testing options are available to WA growers.

Grain growers in Tasmania could be averaging cereal yields of 7 tonnes per hectare. The top 10 percent of those growers could be doing double that tonnage. This is a major outcome the Hyper Yielding Cereals project wants to see after 5 years of Research, Development and Extension. This podcast will take you to Hagley in northern Tasmania where the GRDC has invested in a major trial to lift feed wheat and barley yields, as well as improve grain quality and reduce the need for the island state to import cereals.

Researchers at the Queensland Department of Agriculture and Fisheries are testing the law of unintended consequences – in this case whether wheat varieties that stay greener longer are also prolonging the feeding of aphids on wheat plants. On this podcast, Entomologist, Melina Miles and her team take us into the tiny world of aphids.

For many central western NSW grain growers in 2018, the decision to graze their cereal crops reaped big rewards. But it’s not as simple as letting a mob of sheep loose on your best farming paddock. On this podcast, Peter Matthews, a Technical Specialist with the NSW Department of Primary Industries discusses the tactical and strategic decisions you need to take for a successful cereal grazing program.

After identifying a need to lift cereal yields to take advantage of the extensive soil amelioration work that’s been happening in Western Australia and newfound opportunities to sow early crops, a group of innovative Esperance growers were keen to investigate options. Quenten Knight a member of the Soil Constraints West steering committee and an agronomist with Agronomy Focus in Esperance put together a study tour plan for the group and with a GRDC Grower Development award, the Esperance growers had the means to travel.

The Birchip Cropping Group (BCG) seeder demonstration day was held in April 2019 to compare six commercially-available conventional seeders and precision planters in establishing canola at two sowing rates. In this podcast, the GRDC’s Andrew Etherton talks through the event and the GRDC investment behind it - a four-year industry collaboration aiming to increase the profitability of growers in Australia’s southern and western grain producing areas.

Monitoring a crop is an integral part of a growers integrated pest management (IPM) strategy. Not only does it reveal if any damage is occurring, it also helps in determining pest and beneficial presence and abundance. In this podcast, agronomist Phil Bowden explores these insect monitoring methods in detail, to help growers and advisors make an informed risk assessment and to decide if chemical control is warranted.

Grain yields in the high-rainfall zone (HRZ) have always posed a paradox, remaining far lower than modelling had predicted. However, that is now changing as a result of a comprehensive new research program covering farm-management practices, soil nutrition and plant biology and the development of tools that are helping to better predict the yield and economic benefits of applying inputs in the high-rainfall zone.