274 research outputs found
Integrating gender into index-based agricultural insurance: a focus on South Africa
Index insurance is an agricultural risk management tool that can provide a safety net for smallholder farmers experiencing climate risk. While uptake and scale-out of index insurance may be slow among smallholders, we can learn from experiences that demonstrate where crop insurance can protect smallholders’ livelihoods from climate risk. Integrating gender into climate risk management is necessary to ensure that the benefits of index insurance are experienced by both men and women. A dedicated intention to integrate gender may be required. Taking South Africa as a case study, the potential for gender-sensitive index insurance scale-out among smallholders is investigated
An insight into the impact of arable farming on Irish biodiversity: A scarcity of studies hinders a rigorous assessment
peer-reviewedTo help understand and counteract future agronomic challenges to farmland biodiversity, it is essential to know how present farming practices have affected biodiversity on Irish farms. We present
an overview of existing research data and conclusions, describing the impact of crop cultivation on biodiversity on Irish arable farms. An extensive literature review clearly indicates that peer-reviewed
publications on research conducted in Ireland on this topic are quite scarce: just 21 papers investigating the effect of conventional crop cultivation on Irish biodiversity have been published
within the past 30 years. Principally, these studies have concluded that conventional crop cultivation has had an adverse impact on biodiversity on Irish farms, with 15 of the 21 studies demonstrating negative trends for the taxa investigated. Compared to other EU states, the relative dearth of baseline
data and absence of monitoring programmes designed to assess the specific impacts of crop cultivation on Irish biodiversity highlight the need to develop long-term research studies. With many new challenges facing Irish agriculture, a research programme must be initiated to measure
current levels of biodiversity on arable land and to assess the main farming ‘pressures’ causing significant biodiversity loss or gains in these systems.This work was funded under the EPA ERTDI
Research Programme (Grant 2006-B-MS-46)
Markertrait association analysis of functional gene markers for provitamin A levels across diverse tropical yellow maize inbred lines
Background: Biofortification of staple crops is a cost effective and sustainable approach that can help combatvitamin A and other micronutrient deficiencies in developing countries. PCR -based DNA markers distinguishingalleles of three key genes of maize endosperm carotenoid biosynthesis (PSY1, lcyE and crtRB1) have been developedto facilitate maize provitamin A biofortification via marker assisted selection. Previous studies of these functionalDNA markers revealed inconsistent effects. The germplasm previously employed for discovering andvalidating these functional markers was mainly of temperate origin containing low frequencies of the favourableallele of the most significant polymorphism, crtRB1-5_TE. Here, we investigate the vitamin A biofortification potentialof these DNA markers in a germplasm panel of diverse tropical yellow maize inbred lines, with mixed geneticbackgrounds of temperate and tropical germplasm to identify the most effective diagnostic markers forvitamin A biofortification.Results: The functional DNA markers crtRB1-5_TE and crtRB1-3_TE were consistently and strongly associated withprovitamin A content across the tropical maize inbred lines tested. The alleles detected by these two functionalmarkers were in high linkage disequilibrium (R2 = 0.75) and occurred in relatively high frequency (18%). Genotypescombining the favourable alleles at the two loci (N = 20) displayed a 3.22 fold average increase in _-carotenecontent compared to those genotypes lacking the favourable alleles (N = 106). The PSY1 markers were monomorphicacross all of the inbred lines. The functional DNA markers for lcyE were associated with lutein, and with the ratio ofcarotenoids in the alpha and beta branches, but not with provitamin A levels. However, the combined effects of thetwo genes were stronger than their individual effects on all carotenoids.Conclusions: Tropical maize inbred lines harbouring the favourable alleles of the crtRB1-5_TE and 3_TE functionalmarkers produce higher levels of provitamin A. Such maize lines can be used as donor parents to speed up thedevelopment of provitamin A biofortified tropical maize varieties adapted to growing conditions and consumerpreferences, providing a route towards mitigation of vitamin A malnutrition in Sub-Saharan Africa
Concurrent Suppression of Virus Replication and Rescue of Movement-Defective Virus in Transgenic Plants Expressing the Coat Protein of Potato Virus X
AbstractA line of transgenic tobacco expressing the coat protein (CP) of potato virus X (PVX) was resistant against a broad spectrum of PVX strains. Inoculation of leaves and protoplasts with PVX expressing the jellyfish green fluorescent protein reporter gene revealed that this resistance mechanism suppressed PVX replication in the initially infected cell and systemic spread of the virus. Cell-to-cell movement was also slower in the resistant plants. The resistance at the level of replication was effective against wild-type PVX and also against movement-defective isolates with a frameshift mutation or deletion in the CP ORF. However, the cell-to-cell movement defect of the mutant viruses was rescued on the resistant plants. Based on these results it is proposed that the primary resistance mechanism is at the level of replication
Data for life cycle assessment of legume biorefining for alcohol
Benchmarking the environmental sustainability of alcohol produced from legume starch against alcohol produced from cereal grains requires considering of crop production, nutrient cycling and use of protein-rich co-products via life cycle assessment. This article describes the mass balance flows behind the life cycle inventories for gin produced from wheat and peas (Pisum sativum L.) in an associated article summarising the environmental footprints of wheat- and pea-gin [1], and also presents detailed supplementary results. Activity data were collected from interviews with actors along the entire gin value chain including a distillery manager and ingredient and packaging suppliers. Important fertiliserand animal-feed substitution effects of co-product use were derived using detailed information and models on nutrient flows and animal feed composition, along with linear optimisation modelling. Secondary data on environmental burdens of specific materials and processes were obtained from the Ecoinvent v3.4 life cycle assessment database. This article provides a basis for further quantitative evaluation of the environmental sustainability of legume-alcohol value chains
Just the tonic! Legume biorefining for alcohol has the potential to reduce Europe’s protein deficit and mitigate climate change
Industrialised agriculture is heavily reliant upon synthetic nitrogen fertilisers and imported protein feeds, posing environmental and food security challenges. Increasing the cultivation of leguminous crops that biologically fix nitrogen and provide high protein feed and food could help to address these challenges. We report on the innovative use of an important leguminous crop, pea (Pisum sativum L.), as a source of starch for alcohol (gin) production, yielding protein-rich animal feed as a co-product. We undertook life cycle assessment (LCA) to compare the environmental footprint of 1 L of packaged gin produced from either 1.43 kg of wheat grain or 2.42 kg of peas via fermentation and distillation into neutral spirit. Allocated environmental footprints for pea-gin were smaller than for wheat-gin across 12 of 14 environmental impact categories considered. Global warming, resource depletion, human toxicity, acidification and terrestrial eutrophication footprints were, respectively, 12%, 15%, 15%, 48% and 68% smaller, but direct land occupation was 112% greater, for pea-gin versus wheat-gin. Expansion of LCA boundaries indicated that co-products arising from the production of 1 L of wheat- or pea-gin could substitute up to 0.33 or 0.66 kg soybean animal feed, respectively, mitigating considerable greenhouse gas emissions associated with land clearing, cultivation, processing and transport of such feed. For pea-gin, this mitigation effect exceeds emissions from gin production and packaging, so that each L of bottled pea gin avoids 2.2 kg CO2 eq. There is great potential to scale the use of legume starches in production of alcoholic beverages and biofuels, reducing dependence on Latin American soybean associated with deforestation and offering considerable global mitigation potential in terms of climate change and nutrient leakage — estimated at circa 439 Tg CO2 eq. and 8.45 Tg N eq. annually
Development and Impact Monitoring of a Communication Strategy for the CGIAR Climate Security Program
The purpose of this research paper is to investigate the different aspects of a communications strategy to determine its success for future use and to identify any adaptations and adjustments necessary for improvement. It is vital that research endeavours have the appropriate tools to convey messages of scientific significance to both policy makers and the public for the findings to be of value. This paper analyses the data from a communication strategy formulated for CGIAR Climate Security, a new initiative by CGIAR intended to highlight the extensive pathways in which outcomes of climate change may exacerbate conflict in vulnerable regions. The communications strategy focuses on four main aspects – a Climate Security website, Climate Security webinars streamed from Whova, YouTube and through the UN Global Dispatch Podcast, blog posts and a social media campaign spread across three platforms, Twitter, Facebook and LinkedIn. The strategy was developed and executed over a two month period, where results from Twitter Analytics and Google Analytics were analysed along with the engagement generated from all other platforms. Analysis of Twitter Analytics was focused on aspects of tweets which drove URL clicks and visitors to the Climate Security website. The most effective tweets for generating URL clicks were most commonly accompanied by a video, posted later in the day (afternoon and evening) and later in the week (Thursday to Sunday). The data from Google Analytics suggest that high levels of activity on the Climate Security website produced levels of high engagement. When events such as the Climate Security webinars were scheduled and promoted through social media a pattern of high engagement was observed compared to times of low activity and promotion. It can be argued that the communications strategy was a success with the Climate Security website generating 62,894 visits from 2,294 different users over the two-month period. Twitter posts generated a total of 152,796 impressions on users. The Climate Security webinars had a combined audience of 16,496 views across all streaming platforms. For sustainable impact monitoring it would be necessary to conduct similar follow-on studies in the future to analyse the impact of changes made to the communication strategy developed for the CGIAR Climate Security
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