Multiple Site, Eyre Peninsula, SA SA trials

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Trial	Contributor Funding sources	Year	Trial site

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
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
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
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