Showing results for: Crop systems
This paper by FCRN member Eric Toensmeier argues that perennial vegetables (those grown on plants that live for more than two years) are underappreciated as a source of nutrients, as a means of sequestering carbon and as beneficial to biodiversity.
This three-volume set offers an interdisciplinary review of agriculture and the environment, covering the history of agriculture, soils, irrigation, nutrient management, crop production, livestock and agricultural innovation.
This paper finds that, as climate change causes the geographical shift of areas suitable for growing certain crops, the potential changes in land use could have impacts on biodiversity, water resources and soil carbon storage. So-called “agriculture frontiers” - areas of land not currently suitable for producing crops but that might become suitable in future due to shifts in temperature or rainfall - cover an area nearly one-third as big as current agricultural land area.
This paper quantifies the economic impact of herbicide resistance developed by the weed Alopecurus myosuroides (black-grass). It finds that the annual cost of this resistance is £0.4 billion each year in England, based on lost profit from lower crop yields. The global cost of herbicide resistance could be much higher, as there are 253 known herbicide-resistant weeds.
This paper presents a newly developed open-source system for precision agriculture in lettuce production. The system, known as AirSurf, uses a lightweight manned aircraft to gather images of lettuce fields, then a deep learning algorithm assesses the state of the lettuce crops on a number of characteristics, including lettuce size and number per field.
This opinion article suggests that microbial biomass from bacteria, yeasts, or fungi could be used as human food and animal feed, with the advantage of using less land compared to conventional crop production, particularly if feedstocks were derived directly from atmospheric carbon dioxide.
This paper uses climate models to estimate that average precipitation across many crop production areas will change by more than natural variability throughout the 21st century. Changes are seen even if emissions are relatively low, but meeting the Paris climate goals could reduce the extent of cropland that is affected.
This paper uses long-term studies from Europe and China to examine the effects on soil quality of organic matter addition, no-till practices, crop rotation and organic farming. It finds that yields are lower under no-till and organic practices, but that these practices are associated with higher soil organic matter.
This book discusses options for sustainable weed control for a variety of crops. Topics covered include the impacts of herbicides on people, soils and ecosystems, integrated weed management, and herbicide resistance.
In this podcast by social impact careers organisation 80,000 Hours, engineer David Denkenberger argues that it would be possible to feed everyone even in the event of a disaster that disrupts agriculture, such as a nuclear winter or asteroid strike.
This paper performs a cost-benefit analysis for various climate-smart agriculture practices on farms in Vietnam, Nicaragua and Uganda, including switching annual to perennial crops (e.g. coconut), crop rotations, using organic fertiliser and intercropping maize and beans.
This book, edited by John Dixon et al., sets out different farming systems used across Africa and their relationships to food security.
Growing millet next to a woody shrub native to West Africa could increase biomass by over 900% compared to growing millet alone, according to this paper. The shrub, Guiera senegalensis J.F. Gmel, has tap roots that can reach water deep in the soil. The study traced the movement of water from the shrub’s deep roots to the millet stems in a simulated drought.
In a paper by FCRN member Johan Karlsson of the Swedish University of Agricultural Sciences, researchers worked together with NGOs to iteratively develop a vision for the future of food production in the Nordic countries. The final vision is based on organic farming and lower meat consumption with livestock fed only on pasture and by-products from food production.
The Food and Agriculture Organisation of the United Nations has released the September 2018 version of its quarterly reports, “Crop prospects and food situation”. According to the report, 39 countries currently require external food assistance, driven by conflicts and climate-related shocks. Of those countries, 31 are in Africa, seven are in Asia, and the remaining one is Haiti. World cereal production in 2018 is estimated to be 2.4% lower than in 2017, which saw a record high.