Showing results for: Sustainable food security
The University of Exeter’s Centre for Rural Policy Research has released the report “Changing food cultures: challenges and opportunities for UK agriculture”. The report gives an overview of how UK agriculture might be affected by future changes in the food system, such as health concerns or increases in purchases of ready-meals and snacks.
A recent paper uses data from volcanic eruptions to estimate the effects that geoengineering with sulphate aerosols would have on agricultural production. It concludes that the damage that geoengineering would do to maize, soy, rice and wheat outputs (because of reduction in sunlight reaching the crops) would have roughly the same magnitude as the benefits of the cooling it would provide.
A carbon tax applied across the whole economy, including agriculture, could put more people at risk of hunger (in terms of dietary energy availability) than climate change itself, according to a recent paper.
This book, by Ramesh Ray and S Ramachandran, presents technological interventions in ethanol production from food crops, addresses food security issues arising from bioethanol production and identifies development bottlenecks.
As global mean temperature rises due to climate change, the chance of multiple shocks in maize production occurring at the same time rises, due to greater variability in yields. The top four maize-producing countries are United States, China, Brazil, and Argentina. The chance of all four suffering a yield loss of more than 10% in the same year is presently almost zero, but rises to 6% for 2°C of warming and 87% for 4°C of warming. The study does not account for changing variability in temperature (only the increase in mean temperature), nor any gains from breeding heat-tolerant maize varieties.
This review paper reports that organic agriculture has lower yields than conventional agriculture, by 19-25% on average across all crops, according to three meta-analyses. Lower yields may be due to the lack of use of synthetic fertilisers - organic systems are often limited by low levels of nitrogen or phosphorus - and higher susceptibility to pest outbreaks. Widespread uptake of organic farming (to produce the same amounts of output as today) would probably require some conversion of natural habitats to farmland, because of this lower land-use efficiency compared to conventional agriculture - an important consideration, as the area of certified organic production has increased from 15 million ha in 2000 to 51 million ha in 2015 (although this is only 1% of agricultural land).
The European Commission's Joint Research Centre has published a new World Atlas of Desertification, which provides maps of different factors relevant to desertification such as land use, human appropriation of biological productivity, virtual water use, smallholder agriculture and livestock production.
Disruptions to supplies of food-grade CO2 in Europe are causing shortages of carbonated drinks, meat and crumpets, and could threaten animal welfare. Gasworld explains that several European CO2 plants have prolonged their periods of maintenance downtime due to low CO2 prices (read more here).
A new paper reviews evidence on agricultural intensification in low- and middle-income countries and concludes that intensification rarely leads to both environmental and social benefits. Only 17% of the case studies were found to have win-win outcomes. The paper finds that the two outcome categories most frequently reported in the literature are food production and income, and that these outcomes are the most likely to be positive (at 52% and 68%, respectively). Other outcomes, such as for various ecosystems service indicators, are less frequently reported and are less likely to have positive outcomes.
The European Public Health Alliance have published a study of ten EU policies on sustainable food and farming. The report finds that the policies lack a systemic perspective and are particularly weak on the health, governance and resilience aspects of sustainability. The report recommends a mix of supply- and demand-side interventions and points out the importance of considering the “food environment” when devising policies.
The Barilla Centre for Food and Nutrition (BCFN) has launched a weekly review of food sustainability news, as well as fortnightly in-depth analyses of specific themes such as women farmers and global water management.
This book by Graham Riches investigates the root causes of hunger in developed countries and questions the acceptance of food banks as an appropriate response.
This book, by agronomist and political scientist Marie-Hélène Schwoob, provides a multidisciplinary overview of China’s farming and food issues and presents the results of the author’s fieldwork.
This report by researchers at Wageningen University considers current food policies and practices in the EU, as well as the potential for change in the future.
This book, edited by Bruce Frayne, Jonathan Crush and Cameron McCordic, argues that programmes aimed at reducing food poverty in Africa overemphasise small-scale farmers and ignore urban food security.
This new book, edited by Michel. P. Pimbert, Director at the Center for Agroecology, Water and Resilience in the U.K., critically examines the kinds of knowledge and ways of knowing needed for food sovereignty, agroecology and biocultural diversity.