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A fundamental resource for preparing Australia's primary industries for the challenges and opportunities of climate change.

Political Agroecology is the first book to offer a systematic and articulated reflection on Political Agroecology from the Agroecological perspective. It defines the disciplinary field responsible for designing and producing actions, institutions and regulations aimed at achieving agrarian sustainability. In short, it aims to build a political theory that makes the scaling-up of agroecological experiences possible, turning them into the foundation of a new and alternative food regime. The book proposes theoretical, practical and epistemological foundations of a new theoretical and practical field of work for agroecologists: Political Agroecology . It establishes a framework for a common agroecological strategy, covering the different levels of collective action and the different instruments with which it can be developed. This will be essential reading for agroecologists, environmentalists, farming and food communities, and an ideal textbook for advanced agroecology courses in universities. Key features: Offers a unique state of the art on this fundamental new topic: Political Agroecology Presents a complete introduction to the political and institutional aspects of Agroecology, covering the whole food system Offers an important tool for searching agrarian sustainability Provides a broad epistemological, theoretical and methodological focus, exploring the connection between the different levels and scales involved in agroecological theory and practice 　 Manuel González de Molina Full Professor of Modern History. Coordinator of the Agro-Ecosystems History Laboratory (Universidad Pablo de Olavide, Seville, Spain). Co-director of Master Degree Program on Agro-ecology at International University of Andalusia from 1996 to now. Paulo Federico Petersen Doctorate in Environmental Studies from Pablo de Olavide University (Spain), Master in Agroecology and Rural Development from the Universidad Internacional de Andalucía (Spain), Graduated in Agronomy from the Federal University of Viçosa (Brazil). Executive coordinator of the NGO AS-PTA - Family Agriculture and Agroecology, vice-president of ABA-Agroecology (Brazilian Association of Agroecology) and editor-in-chief of \"Agriculturas: experiencias em agroecologia\" magazine. Francisco Garrido Peña PhD in Philosophy of Law (Universidad de Granada) and full professor on Politics and Law at Universidad de Jaén (Spain). His research activity is focused on Political Ecology, Ethics and Institutional Design. Francisco Roberto Caporal: PhD in Agroecology, Peasantry and History, from the Institute of Sociology and Peasant Studies (Córdoba University, Spain). Master in Rural Extension by Federal University of Santa Maria (1991) and graduate in Agronomy, Federal University of Santa Maria (1975). Currently, he works as Associate Professor of the Federal Rural University of Pernambuco, in the Department of Education, teaching in Rural Extension. Introduction. 1.Theoretical foundations of Political Agroecology 2.The industrialization of agriculture and the enlargement of the food chain 3. A regime on the road to collapse 4. Cognitive frameworks and institutional design for an agroecological transition 5.Scaling Agroecology 6. The agents of the agroecological transition 7. The role of the State and public policies 8.References

The sharpshooter Cicadella viridis L. (Hemiptera: Cicadellidae) is the most common sharpshooter in Europe and, given its xylem feeding behavior, is considered a potential vector of the plant pathogenic bacterium Xylella fastidiosa Wells et al. (Xanthomonadales: Xanthomonadaceae). We tested X. fastidiosa subsp. pauca ST53 (Xfp) transmission capabilities of C. viridis adults, namely 1) acquisition efficiency from four host plant species--periwinkle, milkwort, lavender, alfalfa--and from two artificial diets (PD3 and Xfm), 2) inoculation efficiency to periwinkle at different times post acquisition from different plant and artificial diet sources. The main European vector species--Philaenus spumarius L. (Hemiptera: Aphrophoridae)--was used as a control. C. viridis was able to acquire Xfp from periwinkle, milkwort, and lavender, although with low efficiency (3-16%) and from artificial diets (23-25%). Successful inoculation on periwinkle was extremely rare, being observed only three times, following feeding on milkwort plant and PD3 artificial diet sources. Our study shows that C. viridis is not a relevant vector of Xfp, given the very low transmission rate in controlled conditions, and the inability to feed on olive. The low efficiency reported here correlates with ecological constraints of the vector (mainly monocots host plants, humid environments) that make it difficult to forecast a relevant role in dispersing X. fastidiosa, at least within the present distribution of the exotic bacterium in Europe. However, a possible role of this species in spreading Xf in other agroecosystems, e.g., vineyard and stone fruits grown in humid areas, cannot be excluded. Key words: vector-borne plant disease, OQDS, Philaenus spumarius, Cicadellinae, Xylem-sap feeder

Carbonyl sulfide (COS) fluxes simulated by vegetation and soil component models, both implemented in the ORCHIDEE land surface model, were evaluated against field observations at two agroecosystems in central France. The dynamics of a biogenic process not yet accounted for by this model, i.e., COS emissions from croplands, was examined in the context of three independent and complementary approaches. First, during the growing seasons of 2019 and 2020, monthly variations in the nighttime ratio of vertical mole fraction gradients of COS and carbon dioxide measured between 5 and 180 m height (Grad.sub.COS /Grad.sub.CO2 ), a proxy of the ratio of their respective nocturnal net fluxes, were monitored at a rural tall tower site near Orléans (i.e., a \"profile vs. model\" approach). Second, field observations of COS nocturnal fluxes, obtained by the Radon Tracer Method (RTM) at a sub-urban site near Paris, were used for that same purpose (i.e., a \"RTM vs. model\" approach of unaccounted biogenic emissions). This site has observations going back to 2014. Third, during the growing seasons of 2019, 2020 and 2021, horizontal mole fraction gradients of COS were calculated from downwind-upwind surveys of wheat and rapeseed crops as a proxy of their respective exchange rates at the plot scale (i.e., a \"crop based\" comparative approach). The \"profile vs. model\" approach suggests that the nocturnal net COS uptake gradually weakens during the peak growing season and recovers from August on. The \"RTM vs. model\" approach suggests that there exists a biogenic source of COS, the intensity of which culminates in late June early July. Our \"crop based\" comparative approach demonstrates that rapeseed crops shift from COS uptake to emission in early summer during the late stages of growth (ripening and senescence) while wheat crops uptake capacities lower markedly. Hence, rapeseed appears to be a much larger source of COS than wheat at the plot scale. Nevertheless, compared to current estimates of the largest COS sources (i.e., marine and anthropogenic emissions), agricultural emissions during the late stages of growth are of secondary importance.