The joint OECD-FAO Agricultural Outlook 2020-2029  report finds that over the next ten years supply growth is going to  outpace demand growth, causing real prices of most commodities to remain  at or below their current levels. Fluctuations in the driving factors  of supply and demand could lead to strong price variations around this  general path. At the same time, a decrease in disposable incomes in  low-income countries and households caused by COVID-19 is expected to  depress demand in the early years of this outlook and could further  undermine food security.
An expanding global population remains  the main driver of demand growth, although the consumption patterns and  projected trends vary across countries in line with their level of  income and development. Average per capita food availability is  projected to reach about 3,000 kcal and 85 g of protein per day by 2029.  Due to the ongoing transition in global diets towards higher  consumption of animal products, fats and other foods, the share of  staples in the food basket is projected to decline by 2029 for all  income groups. In particular, consumers in middle-income countries are  expected to use their additional income to shift their diets away from  staples towards higher value products. Meanwhile, environmental and  health concerns in high-income countries are expected to support a  transition from animal-based protein towards alternative sources of  protein.
Open and transparent international markets will be  increasingly important for food security, especially in countries where  imports account for a large share of their total calorie and protein  consumption. "A well-functioning, predictable international trade  system can help ensure global food security and allow producers in  exporting countries to thrive," Mr Gurría said. "Experience has shown that trade restrictions are no recipe for food security."
FAO Director-General Qu said: "We  need better policies, more innovation, increased investments and  greater inclusiveness to build dynamic, productive and resilient  agricultural and food sectors." 
About 85 percent of global  crop output growth over the next decade is expected to come from yield  improvements resulting from higher input use, investments in production  technology and better cultivation practices. Multiple harvests per year  will account for another 10 percent of crop output growth, leaving only 5  percent to cropland expansion. By 2024, aquaculture production is  projected to overtake capture fisheries as the most important source of  fish worldwide. Global livestock production is expected to expand by 14  percent, faster than the projected increase in animal numbers. Feed use  will expand in line with aquaculture and livestock production as feed  efficiency improvements will be counterbalanced by an increase in feed  intensity due to reduced backyard farming.
The Outlook  underscores the continuing need to invest in building productive,  resilient and sustainable food systems in the face of uncertainties.  Beyond COVID-19, current challenges include the locust invasion in East  Africa and Asia, the continued spread of African swine fever, more  frequent extreme climatic events, and trade tensions among major trading  powers. The food system will also need to adapt to evolving diets and  consumer preferences and take advantage of digital innovations in  agro-food supply chains. Innovation will remain critical in improving  the resilience of food systems in the face of multiple challenges.
Assuming  the continuation of current policies and technologies, agricultural  greenhouse gas emissions are projected to grow by 0.5 percent annually,  indicating a reduction in agriculture's carbon intensity. Livestock will  account for 80 percent of this global increase. Nevertheless, without  additional efforts, this slowdown will still fall short of what the  agricultural sector could and should do to contribute to the Paris  Agreement targets for fighting climate change.
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