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US - Based on a new analysis of federal funding from the US Department of Agriculture, researchers say there is an urgent need for increased investment in research and development aimed at making sustainable food production more effective.
The scientists cite environmental impacts such as greenhouse gas emissions, soil degradation and pollution as reasons for the need to change practices.
"Quite frankly, we have to make this transition to sustainable agriculture," said Liz Carlisle of the University of California, Berkeley and corresponding author of the study.
"The question is: can we be proactive about it so that our institutions and economy are prepared to make the transition in a more intentional way and can we be sure that all rural communities will have access [to sustainably produced goods]."
To assess the level of political and economic support for sustainable agriculture, Ms Carlisle and her colleagues identified USDA-funded projects beginning in 2014 and searched key sections of project reports for major components emphasising sustainable agriculture.
Those components were grouped into four categories: improving system efficiency to reduce inputs including fertilisers and pesticides, substituting more sustainable inputs and practices into farming systems, redesigning agricultural systems based on ecological principles, or strengthening connections between producers and consumers.
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