Lower Eyre Agricultural Development Association trials

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Trial Contributor
Funding sources
Year Trial site
Addressing production constraints through the modification of sandy soils

To improve our understanding of what is driving these responses and how soil modification techniques can be improved on sandy profiles.

Lower Eyre Agricultural Development Association
GRDC
2011 Ungarra SA
Research organisaton
Comparison of two seeding machines and interactions with herbicide treatments with effects upon weed numbers and subsequent grain yields

To compare two different seeder’s (Cross Slot and DBS) and compare:

  • Wheat emergence and establishment percentage (2 varieties – Scout and Wyalkatchem)
  • Herbicide effects on Annual ryegrass with each seeding system
  • Dry matter yields of crops under each seeding system
  • Grain yield
Lower Eyre Agricultural Development Association
GRDC
2013 Cummins SA
Research organisaton
Copper management for the future - three years of trials on lower EP

This project aimed to explore different management strategies to overcome copper deficiency in cereals. The project compared the effectiveness of copper sulfate and copper chelate applied either as liquids banded at seeding or as a foliar spray. The project also evaluated the effect of different timings of application of the foliar sprays and their efficiency.
This project aimed to benefit local and South Australian farmers by establishing an independent best practice management guide for copper applications for the future.

Agricultural Innovation & Research Eyre Peninsula
SAGIT
2017 Multiple Site, Eyre Peninsula, SA SA
Research organisaton
Demonstrating integrated weed management strategies to control barley grass in low rainfall zone farming systems

Why do the trial? 
Barley grass possesses several biological traits that make it difficult for growers to manage it in the low rainfall zone, so it is not surprising that it is becoming more prevalent in field crops in SA and WA. A survey by Llewellyn et al. (2015) showed that barley grass has now made its way into the top 1 O weeds of Australian cropping in terms of area infested, crop yield loss and revenue loss. 
The biological traits that make barley grass difficult for growers to manage in low rainfall zones include: 

- early onset of seed production, which reduces effectiveness of crop-topping or spray-topping in pastures,
shedding seeds well before crop harvest, reducing harvest weed seed control effectiveness compared to weeds such as ryegrass which has a much higher seed retention,•    increased seed dormancy, reducing weed control from knockdown herbicides due to delayed emergence, and
•    increasing herbicide resistance, especially to Group A herbicides, used to control grass weeds in pasture phase and legume crops. 

Barley grass management is likely to be more challenging in the low rainfall zone because the growing seasons tend to be more variable in terms of rainfall, which can affect the performance of the pre-emergence herbicides. Furthermore, many growers in these areas tend to have lower budgets for management tactics, and break crops are generally perceived as more risky than cereals. Therefore, wheat and barley tend to be the dominant crops in the low rainfall zone. This project is undertaking coordinated research with farming systems groups across the Southern and Western cropping regions to demonstrate tactics that can be reliably used to improve the management of barley grass. 

Agricultural Innovation & Research Eyre Peninsula
GRDC
2019 Minnipa SA
Research organisaton
Dryland Legume Pasture Systems: pasture demonstration sites

Over the past three decades there has been a shift from integrated crop-livestock production to intensive cropping in dry areas, which has significantly reduced the resilience of farms in low to medium rainfall areas. Intensive cropping is prone to herbicide resistant weeds, large nitrogen fertiliser requirements, and major financial shocks due to frost, drought or low grain prices. 
A pilot project with MLA and AWi in WA and southern NSW has demonstrated how novel pasture legumes such as serradella, biserrula and bladder clover can improve livestock production while reducing nitrogen requirements, weeds and diseases for following crops. The extent to which these new legumes establish, grow and persist on South Australia's alkaline sandy soils requires clarification. 
The demonstration sites are primarily an extension tool, unlike research trials requiring detailed data collection. The purpose of these sites is to gather information on regional legume performance, including benefits to the crops that follow. 

Agricultural Innovation & Research Eyre Peninsula
AGRR&D AWI GRDC MLA
2019 Multiple Site, Eyre Peninsula, SA SA
Research organisaton
Dryland Legume Pasture Systems: pasture demonstrations on lower Eyre Peninsula

This article will report on findings from two pasture trials conducted on the lower Eyre Peninsula in the 2019-2021 growing seasons. The trials are part of the demonstration component of the Dryland Pasture Legume Systems (DLPS) project developed with the former LEADA committee/AIR EP Medium Rainfall RD&E committee to answer several questions about how pasture performance could be improved in the region. 
Demonstration 1: What is the best pasture species/ mix of species to plant in paddocks with differing soil types? 
Background 
Paddocks across the region often have soil types that vary, ie. changing from heavier flats to sandier rises, with pH varying from below 6 to above 8. Getting pasture species established and maintaining good production levels across this landscape is often challenging. 

Agricultural Innovation & Research Eyre Peninsula
GRDC
2019 Ungarra SA
Research organisaton
Eastern Eyre Peninsula Soil Management project

This project aimed to provide support to landholders in the north­eastern area of the EP to address bare areas with repeated soil erosion events. This was done by providing funding to trial a range of practices to increase soil cover and providing technical support to deliver and evaluate these practices. 

Agricultural Innovation & Research Eyre Peninsula
2021 Elbow Hil SA
Research organisaton
Frost Tactics: Amelioration comparison at Mangalo

To determine the effect of soil amelioration on frost damage 

Agricultural Innovation & Research Eyre Peninsula
GRDC
2022 Mangalo SA
Research organisaton
Frost Tactics: Amelioration comparison at Moody

To determine the effect of soil amelioration on frost damage 

Agricultural Innovation & Research Eyre Peninsula
GRDC
2022 Moody SA
Research organisaton
Frost Tactics: Amelioration comparison at Moody - Foliar application

To determine if the application of soil ameloration,  extra nutritional treatments or treatments that will disrupt ice nucleating bacteria will reduce frost damage in a high risk zone.

Agricultural Innovation & Research Eyre Peninsula
GRDC
2022 Moody SA
Research organisaton
Frost Tactics: Amelioration comparison at Warramboo

To determine the effect of soil amelioration on frost damage 

Agricultural Innovation & Research Eyre Peninsula
GRDC
2022 Warramboo SA
Research organisaton
Frost Tactics: Trial 1 Phenology high frost risk

To investigiate if variety phenology has an impact on frost damage in a high risk frost zone

Agricultural Innovation & Research Eyre Peninsula
GRDC
2022 Tooligie Hill SA
Research organisaton
Frost Tactics: Trial 1 Phenology moderate frost risk

To investigiate if variety phenology has an impact on frost damage in a medium risk frost zone 

Agricultural Innovation & Research Eyre Peninsula
GRDC
2022 Tooligie Hill SA
Research organisaton
Frost Tactics: Trial 2 Mixture high frost risk

To determine if mixing cereal varieites with differing maturing will help reduce risk of crop failure in a high risk zone. 

Agricultural Innovation & Research Eyre Peninsula
GRDC
2022 Tooligie Hill SA
Research organisaton
Frost Tactics: Trial 2 Mixture moderate frost risk

To determine if mixing cereal varieites with differing maturing will help reduce risk of crop failure in a moderate risk zone. 

Agricultural Innovation & Research Eyre Peninsula
GRDC
2022 Tooligie Hill SA
Research organisaton
Frost Tactics: Trial 3 Nutrition high frost risk

To determine if the application of soil ameloration,  extra nutritional treatments or treatments that will disrupt ice nucleating bacteria will reduce frost damage in a high risk zone.

Agricultural Innovation & Research Eyre Peninsula
GRDC
2022 Tooligie Hill SA
Research organisaton
Frost Tactics: Trial 3 Nutrition moderate frost risk

To determine if the application of soil ameloration,  extra nutritional treatments or treatments that will disrupt ice nucleating bacteria will reduce frost damage in a high risk zone.

Agricultural Innovation & Research Eyre Peninsula
GRDC
2022 Tooligie Hill SA
Research organisaton
Frost Tactics: Trial 4 Other crops high frost risk

To determine if the risk to frost damage is similar across a range of break crops in a high risk zone. 

Agricultural Innovation & Research Eyre Peninsula
GRDC
2022 Tooligie Hill SA
Research organisaton
Frost Tactics: Trial 4 Other crops moderate frost risk

To determine if the risk to frost damage is similar across a range of break crops in a moderate risk zone. 

Agricultural Innovation & Research Eyre Peninsula
GRDC
2022 Tooligie Hill SA
Research organisaton
Herbicide efficacy in ryegrass control

To assess the efficacy of three herbicide types on stubble covered soil.

Lower Eyre Agricultural Development Association
GRDC
2014 Kapinnie SA
Research organisaton
Herbicide resistance in barley grass populations from the low rainfall zones in South Australia

Why do the trial? 
Barley grass possesses several biological traits that make it difficult for growers to manage in the low rainfall zone, so it is not surprising that it is becoming more prevalent in field crops in SA. A survey by Llewellyn et al. (2015) showed that barley grass has now made its way into the top 1 0 weeds of Australian cropping in terms of the area infested, crop yield loss, and revenue loss. In this survey, barley grass was ranked as the 7th most costly weed to control by the growers in SA and VIC Mallee and Mid-North, Lower Yorke and Eyre Peninsula. In a previous random survey in SA in 2012, Shergill et al. (2015) identified resistance to quizalofop in 15% of barley grass populations from Upper North and Eyre Peninsula. Additional herbicide-resistant populations have been identified since the previous survey. Growers in these regions have observed many control failures and have been collaborating with this GRDC-funded project to confirm the resistance status of their barley grass populations. 

Agricultural Innovation & Research Eyre Peninsula
GRDC
2019 Multiple Site, Eyre Peninsula, SA SA
Research organisaton
Increasing adoption of new techniques combining physical, chemical and plant based interventions to improve soil function on Eyre Peninsula

Trials and demonstrations involving soil mixing either with a spader or ripping with inclusion plates have been shown to increase yields on sandy soils on Eyre Peninsula (EP). Many of these trials have included the addition of organic material incorporated at rates of 5-10 t/ha. Whilst generally these treatments have provided yield increases for a number of years post application, the rates applied have proven to be uneconomic (EPFS 2019, p 71). This project was originally developed by the Lower Eyre Ag
Development Association (LEADA) with two major objectives being:
1. To test ripping with inclusion plates on a wider range of soils.
2. To trial rates and sources of organic matter that are practical for broadacre use.

Agricultural Innovation & Research Eyre Peninsula
NLP
2020 Multiple Site, Eyre Peninsula, SA SA
Research organisaton
Initial survey of the current management practices of barley grass in upper Eyre Peninsula farming systems

A recent N LP2 investment, Adapting cropping systems to changing climatic conditions to reduce inputs and maximise water use through improving crop competitiveness, is a demonstration and extension project which started in late 2019. An initial grower survey of current management practices and attitudes towards barley grass was undertaken in March 2020 to be used as the baseline to assess changes in grower attitudes and changes in practices at the completion of the project. 

Agricultural Innovation & Research Eyre Peninsula
NLP
2020 Multiple Site, Eyre Peninsula, SA SA
Research organisaton
Long Coleoptile Wheat on Eyre Peninsula

Improving the reliability of early
establishment  plays  an role in increasing water and yield potential cropping  environ­ 
Establishing plants earlier extends the growing
a crop, and when with optimal phenology, more time for a plant to
develop resources that ultimately contribute to grain fill and yield.

Seeding deeper, into soil moisture present below the 'normal seeding bed' may help to establish 
plants earlier without relying onan autumn break for germination. Currently, wheat growers are 
restricted to a seeding depth of 3-5 cm because modern wheat varieties have a shortened  coleoptile 
associated with dwarfing genes that were introduced  in  the  1960's  to increase yields. The 
length of a coleoptile restricts seeding depth because it is a hollow shoot that protects the first 
leaves as they grow  towards  the soil  surface during  germination.  Breeders have now identified 
an alternate dwarfing gene 'Rht18' that allows a coleoptile up to 12 cm long, whilst maintaining  
the reduced height associated  with modern high yielding wheat varieties.

The trials reported here assessed the performance of long coleoptile wheats  in an Eyre Peninsula 
farming system.
 

Agricultural Innovation & Research Eyre Peninsula
2021 Site D, Cootra, SA SA
Research organisaton
Mixed cover crops for sustainable farming

This article reports a trial at Minnipa which investigated mixed species cover crops grown over winter and their impact on wheat production the following year. 
 

Agricultural Innovation & Research Eyre Peninsula
GRDC NLP
2020 Minnipa SA
Research organisaton
Modification of sandy subsoils on EP

To provide further understanding of what is driving responses to modification of sandy subsoils and how soil modification techniques can be improved.

Lower Eyre Agricultural Development Association
GRDC
2010 Ungarra SA
Research organisaton
Resilient EP: A new paradigm for resilient and profitable dryland farming on the Eyre Peninsula using data to improve on-farm decision making

The project aims to unlock value in existing data to drive innovation in agronomy and livestock management by bringing together data from a range of sources including satellite, soil moisture probe networks, weather stations, proximal sensing and yield models. By working with farmers and advisors to link data with decision making, the project aims to make more informed and significantly improved land management decisions. 

Agricultural Innovation & Research Eyre Peninsula
NLP
2020 Site A, Minnipa, SA SA
Research organisaton
Time of sowing and ryegrass management

To investigate proactive non-herbicide management strategies for reducing ryegrass seed set and so 'run down' the seed bank.

Lower Eyre Agricultural Development Association
2014 Wanilla SA
Research organisaton
Time of sowing and ryegrass managements

To investigate proactive non-herbicide management strategies for reducing ryegrass seed set and so 'run down' the seed bank.

Lower Eyre Agricultural Development Association
GRDC
2014 Yeelanna SA
Research organisaton
Treating production constraints on the sandy soils of upper and lower Eyre Peninsula

Why do the trial? 
There are around 5 million hectares of sandy soils under agricultural production in the low to medium rainfall areas of south-eastern Australia. These soils have multiple constraints limiting production including water repellence, soil acidity, compaction and low organic carbon levels leading to poor biological cycling and nitrogen mineralisation. Estimates of the yield gap (the difference between water limiting potential and average actual crop yield) are between 1.8 and 2.1 t/ha on Upper Eyre Peninsula and as much as 2.3 t/ha on Lower Eyre Peninsula (http://yieldgapaustralia.com .au/ maps/). 
In 2016, GRDC invested in a research program to help grain growers identify and overcome the primary constraints to poor crop water-use on sandy soils in the low-medium rainfall environment (CSP00203). The 'Sands Impacts' component of this project enables grower groups to test outcomes from the research component by applying targeted mitigation and amelioration interventions to overcome production constraints. 

Agricultural Innovation & Research Eyre Peninsula
GRDC
2020 Multiple Site, Eyre Peninsula, SA SA
Research organisaton
Yellow leaf spot fungicide trial

To compare two commonly planted wheat varietie, Scout and Corack, tested under three different fungicide regimes for suceptibility to yellow leaf spot

Lower Eyre Agricultural Development Association
GRDC
2014 Kapinnie SA
Research organisaton
Yellow leaf spot susceptibility trial

To evaluate the reported yellow leaf spot susceptibility ratings of 20 common wheat varieties

Lower Eyre Agricultural Development Association
GRDC
2014 Kapinnie SA
Research organisaton