Stakeholder Challenges and Opportunities of GPS Shock Collars to Achieve Optimum Welfare in a Conservation or Farm Setting

Virtual fences for livestock facilitated by a GPS shock collar (GPS-SC) and phone app were introduced to the UK in cattle herd trials in 2020. Technology which uses aversive shocks to control livestock movement on farms and in other settings poses a significant risk to livestock welfare. There are currently no welfare protocols in place in the UK to ensure the ethical use of GPS-SCs. The objective of this study was to understand how GPS-SCs were being used in practice in the UK and gather data to assist researchers and policymakers in the future research and development of a welfare protocol for the UK. We studied how the technology performs in terms of welfare challenges and opportunities, covering extensive livestock production, conservation settings, “rewilding”, and regenerative farming practices, where the technology is currently being applied. Semistructured interviews were conducted with key stakeholders. In-depth interviews (n = 8) supported the previous literature that the use of GPS-SCs in restricted grazing settings poses a risk to animal welfare. This is due to the wavering virtual fence boundary line (which is affected by satellite movements), a lack of visual markers, and, in some “rewilding” and conservation settings, livestock keepers, which require training and support to enable optimal welfare in practice and prevent misuse of the technology. Results also indicated that there are opportunities for enhancing livestock welfare with GPS-SCs in very extensive farm settings, where targeted care can be facilitated by using the data to monitor and track livestock using GPS-SCs, and which can also prevent cattle injury or fatality through virtual pastures designed to protect livestock from hazards such as roads or bogs. Future research is needed to focus on minimising shocks in the training period and to better understand the value of visual electric fences in the training process

Enzymatic and proteomic exploration into the inhibitory activities of lemongrass and lemon essential oils against Botrytis cinerea (causative pathogen of gray mold)

Introduction: Essential oils (EOs) have been demonstrated as efficacious against B. cinerea. However, the underpinning enzymatic and proteomic mechanism for these inhibitory effects is not entirely clear. Methods: Thus, this study examined the effects of lemon (Le) and lemongrass (Lg) EOs (individually and in combination) against B. cinerea based on enzymatic and proteomic analyses. Proteomics data are available via ProteomeXchange with identifier PXD038894. Results and discussion: Both EOs (individually and in combination) displayed abilities to induce scavenging as observed with the reduction of H2O2. Measured malondialdehyde (MDA) and superoxide dismutase (SOD) activity were increased in all EOs treated B. cinerea mycelia compared to the control. Ascorbate peroxidase (APX) activity was highest in Lg treated B. cinerea (206% increase), followed by combined (Le + Lg) treatment with 73% compared to the untreated control. Based on GC-MS analysis, the number of volatile compounds identified in lemon and lemongrass EOs were 7 and 10, respectively. Major chemical constituent of lemon EO was d-limonene (71%), while lemongrass EO was a-citral (50.1%). Based on the interrogated LC-MS data, 42 distinct proteins were identified, and 13 of these proteins were unique with 1, 8, and 4 found in Le-, Lg-, and (Le + Lg) EOs treated B. cinerea, respectively, and none in control. Overall, 72% of identified proteins were localized within cellular anatomical entity, and 28% in protein-complexes. Proteins involved in translation initiation, antioxidant activity, protein macromolecule adaptor activity and microtubule motor activity were only identified in the Lg and (Le + Lg) EOs treated B. cinerea mycelia, which was consistent with their APX activities

Bioassays and proteomics as early detection tools in postharvest management of table grapes (Vitis vinifera L.) diseases – A Review

Postharvest diseases are a major concern to the table grapes (Vitis vinifera L.) industry, leading to huge economic losses worldwide. Monitoring postharvest disease and early detection of fruit pathogens are crucial to mitigate disease infestation and facilitate effective management practices. Over the years, traditional visual scouting for symptoms combined with biochemical assays, serological tests and/or DNA-based approach have been useful tools in fruit disease diagnosis. However, these tools have drawbacks in accurately detecting diseases during asymptomatic stage. Hence, these methods are not the most effective for disease confirmation and pathogen identification. In contrast, proteomics could provided instantaneous results that can be used to identify asymptomatic disease stages on table grapes. Therefore, this review provides an overview on the postharvest disease causing pathogens and associated symptoms on table grapes. Prospects of using changes in biochemical assays and proteomics as early response signal in postharvest disease management were discussed. This article proposed the need for continued advancement in the development of conventional tools, with emphasized on combining these tools with more robust and responsive novel approaches for better early disease diagnostic strategies

Assessing mercury pollution at a primary ore site with both ancient and industrial mining and smelting activities

The Minamata Convention on Mercury has mandated a renewed global effort to tackle Hg pollution. The present study evaluates Hg pollution at a primary Hg production site exploited since the Qin Dynasty (200s BC), with intensive industrial scale production over the past four decades. This single location accounts for over 95% total Hg production in China in recent years. To assess the environmental risk and effectiveness of recently implemented control measures, we collected 90 soil samples, 60 plant tissue samples, 47 sediment samples, and 47 river water samples from the site and its vicinity. A site-specific conceptual site model was established based on the sources, migration transformation pathways of Hg pollutant and its exposure scenarios. The maximum soil Hg concentration reached 10,451 mg·kg-1, posing a high health and ecological risk. Vegetable and crop Hg concentrations outside the site reached 0.23 mg·kg-1 in rice grains and 4.24 mg·kg-1 in green onion. The highest health risk, with a hazard quotient of 130.66, was observed in the Ore Storage Site, which reduced to 17.14 when Hg bioavailability was considered. Risk control measures implemented in recent years included a stormwater collection system and capping of the tailing pond area with clean imported soil. These measures were generally successful; however, Hg in the tailings were found to be contaminating the imported surficial soil due to rainfall saturation and upward migration, suggesting a need for long-term post remedial site monitoring and maintenance. We also found that mining and smelting activities have contaminated a 6 km stretch of a nearby river, with sediment Hg concentrations reaching 2,819 mg·kg-1, and water column concentrations reaching 193.21 ng·L-1. The sediment and water concentrations are highly correlated (R2=0.78), suggesting that, with risk control measures in place, a reservoir of Hg in polluted river sediment is now driving pollution in the water column. This work demonstrates that primary Hg mining has caused widespread and serious soil and water pollution. Risk control measures can reduce human health and ecological risks, but robust monitoring and maintenance are required for remediation to be effective in the long-term

Factors that influence dairy farmers’ decisions to implement Johne’s Disease control practices: A systematic review

Johne’s Disease (JD) is an infectious ruminant disease that can cause economic loss for famers through reduced milk yields and infertility and has negative implications for animal welfare. JD is endemic in the dairy populations of many countries and there has been significant effort by governments and industry to try and control it. However, these efforts have had limited success. Many studies look at individual control programmes or the adoption of Johne’s control measures; however a wider perspective on what drives farmer participation Johne’s control does not currently exist. This study seeks to fill this gap by conducting a systematic review informed by the PRISMA statement. The results suggest that psychological factors such as participation fatigue, cognitive dissidence over animal welfare and not having first-hand experience of the disease act as barriers to Johne’s control. To better promote Johne’s control, this review emphasises that control programmes need to engage farmers, advisers, and supply chain actors in their design and delivery of control programmes to account for differing attitudes and levels of knowledge

Scoping potential routes to UK civil unrest via the food system: results of a structured expert elicitation

We report the results of a structured expert elicitation to identify the most likely types of potential food system disruption scenarios for the UK, focusing on routes to civil unrest. We take a backcasting approach by defining as an end-point a Societal Event in which 1 in 2,000 people have been injured in the UK, which 40% of experts rated as “Possible (20–50%)” or “More likely than not (50–80%)” or “Very likely (>80%)” over the coming decade. Over a longer timeframe of 50 years, nearly 80% of experts rated such an event as “Possible (20–50%)” or “More likely than not (50–80%)” or “Very likely (>80%)”. The experts considered two food system scenarios and ranked their plausibility of contributing to the given societal scenario. For a timescale of 10 years the majority identified a food distribution problem as the most likely. Over a timescale of 50 years the experts were more evenly split between the two scenarios, but over half thought the most likely route to civil unrest would be a lack of total food in the UK. Overall, in the next 50 years, 45% of participants said there is a greater than 20% chance of civil unrest due to insufficient food in the UK due to extreme weather or ecological collapse. However, the experts stressed that the various causes are interconnected, can create cascading risks and highlighted the importance of a systems approach. We encourage food system stakeholders to use these results in their risk planning, and recommend future work to support prevention, preparedness, response and recovery planning

To adapt or not to adapt, that is the question. Examining farmers’ perceived adaptive capacity and willingness to adapt to sustainability transitions

The agricultural sector is one of the areas that has been highlighted as requiring a sustainability transition. For these kinds of transitions to succeed over the long-term, farmers need to be able to adapt to the required changes. Identifying which individual and institutional aspects are important for farmers’ adaptive capacity and willingness to adapt is therefore an essential step in gaining insight into the role of farmers’ agency in transition processes and their long-term sustainability. So far, adaptive capacity literature has mainly focused on adaptive capacity in relation to climate change or individual innovations, thereby leaving a knowledge gap on adaptive capacity in relation to sustainability transitions. In this study, we aim to address this by deepening our understanding of these aspects through 24 in-depth, semi-structured interviews with English farmers and organisations in the context of the post-Brexit agricultural transition. Whilst we found many similarities with previous adaptation literature in the context of climate change and individual innovation, we also found aspects that have not been prominent and thus seem to be specific for adaptation in relation to sustainability transitions. These include the dual role that access to finances and information can play; land ownership status in terms of having the right to implement adaptation measures; state of mind; feeling respected, appreciated, and understood; perceived level of control and ownership; and considerations of (global) consequences. Further research is needed to strengthen and further develop our findings, for example through case studies in other geographical locations or sectors

The mental wellbeing of young farmers in Ireland and the UK: driving factors, help-seeking, and support

Whilst research attention on the mental wellbeing of farmers is growing, there are few studies focused on young farmers. Our research set out to better understand the factors affecting young farmer mental wellbeing and help-seeking behaviour. We draw insights from a combined study in Ireland and the UK, supplemented by separate studies by the same author team in both places. Through the use of young farmer interviews and surveys, as well as interviews of those who support young farmers with their mental wellbeing, we identify a mixed picture of mental wellbeing and a plethora of factors affecting it. Though many of these factors have been identified in the wider literature, the impact of socialisation and time off the farm, and sexism/misogyny affecting young female farmers, were specifically identified in our study. In some cases, young farmers were considered to be better at speaking about mental wellbeing than their older counterparts, but our study indicated that some people in this demographic fail to seek assistance because of stigma, stoicism, and possible lack of confidentiality. Improving the accessibility of mental wellbeing services, as well as normalising conversations on the subject and providing support in informal social settings, were identified as key recommendations

Natural field freeze-thaw process leads to different performances of soil amendments towards Cd immobilization and enrichment

Cadmium (Cd) soil pollution is a global issue affecting crop production and food safety. Remediation methods involving in-situ Cd immobilization have been developed, but their effectiveness can diminish under seasonal freeze-thaw aging processes. In this study, we assessed the field performance of four soil treatments at a seasonally frozen rice paddy. Amendments were applied at 2 wt%, including: (i) sepiolite (a 2:1 clay mineral), (ii) superphosphate, (iii) biochar (produced by rice husk at 500 °C for 2 h), and (iv) joint application of biochar & superphosphate (1:1 mixture by weight). Immobilization performance was determined as DTPA extractable Cd and plant uptake in various organs. Overall, the four treatments significantly reduced Cd bioavailability during the plant growth period, with average DTPA-extractable concentrations decreasing by 43%, 34%, 39% and 45% for the four treatments, respectively, relative to untreated soil (control). Rice grain yields from the superphosphate and the joint application treatments increased by 8.0% and 11.8%, respectively, and Cd accumulation within those grains reduced by 14.3% and 48.9%, respectively. During the winter non-growth period, freeze-thaw aging facilitated Cd mobilization, with DTPA-extractable Cd increasing by 16.9% in the control soil, relative to the initial period. However, this reduced to 10.9%, 14.4%, 7.6% and 5.0%, for the sepiolite, superphosphate, biochar and joint application treatments, respectively. Overall, the joint application of biochar and superphosphate provided the best performance in terms of both long-term Cd immobilization and rice production enhancement, offering a green remediation option for risk management at Cd contaminated rice paddies in seasonally frozen regions