THE SARIC CHALLENGE: This translation project was directly formulated in response to a major industry challenge presented by Duncan Rose (Cawood Scientific) at the recent SARIC Sandpit Event. The challenge is to "understand why there is a poor uptake of soil analysis across the UK livestock sector and to design novel recommendation and interpretation systems for livestock farming systems". To address this, Bangor University and Rothamsted Research have teamed up with five influential industrial partner organisations (Cawood Scientific, British Grassland Society, RSK ADAS, Charlie Morgan GrassMaster Ltd & AHDB) alongside a range of associate partners (e.g. NIAB, Welsh Government, Yara-Lancrop, Farming Connect, Eurofins, SoilCares etc.). Their commitment to the project is highlighted in the numerous letters of support. NATURE OF THE PROBLEM: Soils represents a vital resource within UK livestock production systems and it is important that they are well managed to ensure the long-term economic survival of the industry. Fundamental to this is the regular testing of the soil to make sure that there are no chemical, physical or biological imbalances that either constrain production or cause environmental damage. While uptake of standard soil testing by farmers within the arable sector is high, there is compelling evidence that the opposite is true for the livestock sector. Consequently, despite encouragement from policymakers, regulators and farming organisations, numerous studies have shown that soils under livestock production in the UK are frequently sub-optimal in terms of their P and K status and soil pH, as well as soil structure. Ultimately, this lack of testing causes reductions in yields due to excess acidity, under-fertilisation and compaction, while in some cases, over-fertilisation results in wasting money on fertiliser and increasing the risk of environmental losses. This is resulting in underperforming farms and economic losses across the livestock sector. In the current era of sustainable intensification, it is essential that nutrients are used efficiently, and yield gaps are closed through simply 'getting the basics right', resulting in improved resource utilisation and farm incomes. This suggests that current strategies to promote soil testing are not working well and that new approaches are required. Looking to the future, it is also clear that the livestock sector will probably have to embrace soil-based agri-tech to retain its competitive advantage. Based on current evidence, it is likely that the adoption of these new methods of soil testing may also be very slow. A critical assessment of the barriers to adopting (i) basic soil testing, (ii) more comprehensive soil testing, and (iii) emerging technologies is therefore required. TACKLING THE ISSUE AND OUTCOMES: In response to this challenge, and together with our industrial partners, we have designed six interlinked work-packages (WP) to tackle the problem from multiple angles. Firstly, we will map the spatial and temporal trends in soil testing within the UK (WP1). Secondly, we will identify the major barriers which prevent farmers from undertaking soil testing (WP2). Thirdly, we will set up on-farm demonstrations to illustrate the benefits of soil testing in areas where adoption is poor (WP3). Looking to the future, we will also evaluate what soil-based agri-tech solutions are on the horizon and evaluate the likelihood that farmers will adopt these technologies (WP4). This information will provide the foundation for a series of participatory workshops and dissemination events with the stakeholder community to demonstrate the benefits of soil testing to grassland farmers (WP5). Lastly, we will synthesise all the information in WP1-5 to produce an industry-focused road map for promoting life-long adoption of soil testing within the livestock industry (WP6). We expect to see tangible benefits to the industry within 5 years of this project commencing.

Nitrogen (N) is vital for crop productivity, however, typically half of the N we add to agricultural land is usually lost to the environment. This wastes the resource and produces threats to air, water, soil, human health and biodiversity, and generates harmful greenhouse gas (GHG) emissions. These environmental problems largely result from our inability to accurately match fertiliser inputs to crop demand in both space and time in the field. If these problems are to be overcome, we need a radical step change in current N management techniques in both arable and grassland production systems. One potential solution to this is the use of technologies that can 'sense' the amount of plant-available N present in the soil combined with sensors that can report on the N status of the crop canopy. On their own, these sensors can provide useful information on soil/crop N status to the farmer. However, they need refining if they are then to be used to inform fertiliser management decisions. This is because climate variables (e.g., temperature, rainfall, sunlight hours) and soil factors (e.g., texture, organic matter content) can have a major influence on soil processes and plant growth, independent of soil N status. These sensors therefore need to be combined with other data and improved soil-crop growth models to provide a more accurate report of how soil N relates to crop N demand at any given point in time. In this project, we are demonstrating how adoption of precision agriculture techniques (in the form of soil nitrate sensors) can be used to improve N use efficiency in both arable (wheat, oilseed rape) and grassland systems. While we are focusing on soil nitrate, as it arguably represents the key form of soil N associated with productivity and the environment, the approaches we are taking are also readily applicable to other nutrients for which sensors are currently being developed (e.g., ammonium, phosphate, potassium). We have designed our research programme in accordance with the strategic objectives of the BBSRC-SARIC programme and those recently produced by HM Government to facilitate delivery of sustainable intensification strategies. To maximise the potential for technology development, commercialisation and adoption we are working closely with a range of industry partners throughout the programme. Overall, we aim to (i) demonstrate the use of novel N sensors for the real-time measurement of soil N status; (ii) use geo-statistical methods to optimise the deployment of these in situ sensors; (iii) produce new mechanistic mathematical models which allow accurate prediction of crop N demand; (iv) validate the benefits of these sensors and models in representative grassland and arable systems from a N use and economic standpoint; and (v) explore how these new technologies can improve current fertiliser management and guidelines through enhanced industry-focused decision support tools. Ultimately, this technology shift could result in substantial savings to the farmer by both reducing costs, maximising yields and minimising damage to the environment. For example, if our technology improves N use efficiency by 10% in agricultural land where fertiliser is applied in the UK (8.2 million hectares of grassland and tilled crops), we estimate it would save 100 thousand tons of N fertiliser (equivalent to a saving of £69 million per annum to farmers). When the direct and indirect costs of nitrate pollution are considered (e.g., removing nitrate from drinking water is estimated to cost UK water companies >£20 million annually), and the reduction in direct and indirect greenhouse gas emissions from manufacture and use of 100 thousand tons of N fertiliser are accounted for, the benefits of adopting a validated precision agriculture approach are clear.

The increasing frequency of extreme climate events in the UK suggests the approach of the 'Perfect Storm' described by Beddington (2009). In 2012 an early season drought followed by extreme rainfall and flooding over extensive areas of the UK drove the need for the 'climate smart' agriculture that will be used here to address the dual challenges of climate change and food security. Over an 80h period in November 2012, more than 46 x 106L of rain fell on the North Wyke Farm Platform (NWFP), 90% of which was immediately lost as overland flow or in drainage. Droughts also challenge the sustainability of UK grasslands and occur increasingly in winter where the warmer temperatures now encountered encourage continued winter growth placing drought susceptible varieties at risk. UK grasslands occupy 65% of all available agricultural land and unlike most other crops comprise perennial species that provide crop yields over many years. The combination of their extensive land-cover and persistency provides grasslands opportunities for environmental service in addition to their traditional roles as high quality forage for livestock agriculture. This is achieved through selection of the appropriate varieties and when necessary their modification, and improved grassland management, with benefits likely to persist over years. Grasslands provide catchments for many UK rivers and act as regulators of water capture, its release, and quality dependent on their composition. IBERS is widely recognised for innovative approaches to breeding grass and clover varieties. However, variety development has untill now neglected programmes to improve root design or the opportunities for improved root-soil interactions that will deliver improved soil structure, hydrology, nutrient use and reduce the compaction that compromises crop yields. A recent BBSRC study published in Nature Scientific Reports (involving the PI of this proposal) demonstrated the potential for a novel grass species hybrid to initiate significant root-soil interactions that would if reproduced at the field-scale generate significant benefits in terms of flood control (DOI:10.1038/srep01683). Equivalent results have been recorded in white clover. In the current project, the potential of both for flood control will be assessed at the field scale, independently and as mixtures. The project will use two new BBSRC-supported National Capabilities: the National Plant Phenomics Centre (NPPC) and the North Wyke Farm Platform (NWFP). The project will investigate at different scales from the individual plant genotype, to the plot, through to the crop the potential for environmental service that may be achieved through a modified root design or growth pattern. The results achieved from the NPCC and NWFP facilities will be validated by testing selected varieties on commercial farms in diverse locations and under alternative livestock management systems. The proposal will use the latest BBSRC high-throughput phenomic and genomic technologies, with a suite of well characterised and relevant experimental populations together with molecular markers to engage in marker-assisted breeding for improved root designs in elite forage grass and clover varieties. Plant materials suitable for entry into National List trials will be developed within the time-course of the project. This proposal is being submitted through the BBSRC stand-alone LINK scheme. The project will benefit from the involvement of industrial partners that represent the various sectors of the UK grassland and livestock industry allowing for identification and review of key targets, and evaluation of the impact of the research, dissemination of the results within the grassland sector, and uptake and delivery of project outcomes.

The agri-food system, producing 23% of UK emissions, must play a key role in the UK's transition to net zero by 2050, and through leadership in innovation can support change globally. Our Network+ will build on existing and new partnerships across research and stakeholder communities to develop a shared agenda, robust research plans, and scope out future research and innovation. The Network will design and deliver high-reward feasibility projects to help catalyse rapid system transformation to ensure the agri-food system is sustainable and supports the UK's net zero goal, while enhancing biodiversity, maintaining ecosystem services, fostering livelihoods and supporting healthy consumption, and minimising the offshoring of environmental impacts overseas through trade. The radical scale of the net zero challenge requires an equally bold and ambitious approach to research and innovation, not least because of the agri-food and land system's unique potential as a carbon sink. Our title, Plausible Pathways, Practical and Open Science, recognises the agri-food system as a contested area in which a range of pathways are plausible. Success requires that new relationships between natural and social science, stakeholders including industry, government and citizens, be forged in which distributed expertise is actively harnessed to support sectoral transformation. We will use our breadth of expertise from basic research to application, policy and engagement to co-produce a trusted, well-evidenced, and practical set of routes, robust to changing future market, policy and social drivers, to evolve the agri-food system towards net zero and sustainability. Marshalling our many existing stakeholder links, we will review and evaluate current options and use Network funding to catalyse new partnerships through retreats, crucibles, workshops, online digital networking and scoping studies to develop system approaches to transformation, reframe the research agenda and undertake novel research projects. We will co-design productive and creative spaces that enable the research community to engage with a wide range of stakeholders and thought leaders through the following framework: 7 Co-Is who govern the Network but are not themselves eligible for funding; 9 Year-1 Champions (with new appointments after Year 1) dynamically forging new connections across research communities; 11 Advisory Board members tasked with challenging business-as-usual thinking; and regular liaison with other stakeholders.