Showing results for: Yields
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.
This book, by Jules Pretty and Zareen Pervez Bharucha, explores the current state of knowledge of sustainable agricultural intensification in a variety of settings, including smallholder farms and industrialised countries.
Rob Bailey and Bernice Lee of UK think tank Chatham House have written a piece exploring food system trends, including rising food demand, plateauing yields in key crop production regions, global convergence on a diet dependent on calorie-dense but nutrient-poor crops and a lack of genetic diversity in staple crops. The authors conclude that current food system trends are unsustainable, saying, “The continued intensification and expansion of agriculture is a short-term coping strategy that will eventually lead to food-system collapse.” They call for interventions at key leverage points in the food system.
The emergence of disease-causing fungi that are resistant to antifungal drugs threatens both human health and food security, according to a recent paper. Some resistance has been found to every main class of agricultural fungicides and many medical antifungals used to treat humans and animals. The paper outlines some factors contributing to emerging resistance and makes some policy recommendations.
This article looks at our ability to increase cropping intensity in order to meet future food needs and avoid expanding cropped land area. The research produces spatially explicit information on the cropping intensity gap, i.e. the difference between actual and potential cropping intensity and finds that increasing cropping intensity could compensate for land lost to urbanisation.
This paper details the findings of a meta-analysis of published data on the impact of increasing temperatures on the global and regional yield of wheat, rice, maize and soy.
This paper, taken from an inaugural edition on planetary health in the Lancet, analyses global food and nutrient production and diversity by farm size, providing evidence on how smallholder farmers contribute to the quantity and quality of our global food supply and discussing the structural impacts of agriculture on nutrient availability.
In this post in the Conversation, crop scientist Matthew Wallenstein, Associate Professor and Director at the Innovation Center for Sustainable Agriculture, Colorado State University, discusses the potential of natural microbes to improve agriculture and make it more sustainable.
This review assesses the performance of organic cropping systems as an approach to sustainable agriculture, and seeks to identify the contextual considerations (such as type of cropping system) that may affect this performance. The scope of the review is constrained to the level of the farming system (i.e. excludes considerations of other components of the food system, such as packaging or transport). In order to provide an unbiased assessment of organic farming as a means of sustainable agriculture, rather than approaching the question from the usual “What does organic farming do well/badly?” angle, the authors ask “What constitutes successful sustainable agriculture?” then measure organic farming against this yardstick.
This Nature Plants paper by researchers from agroecological and agronomical research institutions in France used a statistical modelling approach to predict the effects of reducing pesticide use on the productivity and profitability of French arable farms.
A recent paper published in BioScience articulates the need for a new vision and new goals for the sustainable intensification of agriculture, moving away from the often cited statement that food production must double by 2050 to feed the world's growing population.
This paper examines high-resolution, crop-specific GHG emissions and GHG intensity estimates which are derived using a method that couples biophysical models with novel 5-arc-minute resolution data.
This article by agricultural researchers in Spain reviews the historical changes in land use and soil management practices, and examines how these changes have contributed to soil erosion in the past, before presenting modelling data to show how soil erosion may impact on agricultural yields in the future.
This paper takes as its starting point the mainstream projections that in future, global food production will need to increase by another 60–110% by 2050, to keep up with anticipated increases in human population and changes in diet (it should be noted, however, that the need and feasibility of such increases is contested (see), with many arguing that dietary change and waste reduction can reduce the need for production increases (see)).