Showing results for: Wheat
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 briefing from the CGIAR Research Program on Climate Change, Agriculture and Food Security (CCAFS) notes that demand for five cereals in sub-Saharan Africa is set to almost triple by 2050. It argues that it is possible for the region to be self-sufficient in cereals by 2050 using only the current area of cereal farmland, but that this requires significantly higher fertiliser use. To keep greenhouse gas emissions to the minimum possible will require suitable crop varieties, careful nutrient management, optimum planting densities and protection of crops against weeds, pests and diseases.
This book, edited by Mirza Hasanuzzaman, Kamrun Nahar and Mohammad Amzad Hossain, provides a comprehensive overview of the response of wheat cultivation to changing environmental conditions, including extreme temperatures, drought and ultra-violet radiation.
This paper models the relationship between soil organic matter and yields of maize and wheat, finding that while higher soil organic carbon (a proxy for soil organic matter) levels do generally correspond to higher yields, the yields taper off at around 2% soil organic matter.
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 report by the Food and Agriculture Organisation of the United Nations (FAO) aims to inform decision-making that focuses on reducing impacts on natural capital.
A new paper published in Global Change Biology looks into the effects of increasing CO2 levels on protein in crops. The study finds that not only can increased CO2 be a problem for food security through climate change, but it can also directly impact the nutritional value of crops.
A new paper produced by a global group of agrosystem modellers, argues that if no action is taken to adapt, the future global wheat harvest is likely to be reduced by 6 % per each degree Celsius of local temperature increase. This would correspond to 42 million tonnes of yield reduction worldwide, which equals a quarter of current global wheat trade.
The authors behind this study say that climate change has substantially increased the prospect that crop production will fail to keep up with rising demand in the next 20 years.
This is the first global study to quantify the extent to which global crop diversity has narrowed over time and how and where those changes have occurred.
This paper investigates whether current yield trajectories are adequate to achieve the production increases that many forecasts suggest are needed on existing farmland. The results indicate that the majority of global cereal crops such as rice, wheat and corn may have reached their maximum possible yields. Six statistical models were analysed to identifying the most appropriate shape of historical yield trend and the analysis makes it possible to estimate in which countries and regions yields are flat, rising, declining or plateauing.
This IFPRI (International Food Policy Research Institute) policy note summarises the results of a study that compares the effects that different technologies have on crop yields and resource use, in particular arable land, water and nutrient inputs. It models technology-induced changes in crop yields and considers how the mix of technology uptake can influence the global food market through changes in food prices and trade flows, as well as calorie availability, in particular for developing countries.