Lasering In on Corn Fields
Mapping crops around the globe is key to estimating production and developing targeted management strategies. New research utilized data from NASA's Global Ecosystem Dynamics Investigation (GEDI) technology and developed an algorithm to distinguish between maize and other crops with high accuracy and produce crop maps across the globe.
A 20-year retrospective review of global aquaculture
The sustainability of aquaculture has been debated intensely since 2000, when a review on the net contribution of aquaculture to world fish supplies was published in Nature. This paper reviews the developments in global aquaculture from 1997 to 2017, incorporating all industry sub-sectors and highlighting the integration of aquaculture in the global food system. Inland aquaculture—especially in Asia—has contributed the most to global production volumes and food security. Major gains have also occurred in aquaculture feed efficiency and fish nutrition, lowering the fish-in–fish-out ratio for all fed species, although the dependence on marine ingredients persists and reliance on terrestrial ingredients has increased. The culture of both molluscs and seaweed is increasingly recognized for its ecosystem services; however, the quantification, valuation, and market development of these services remain rare. The potential for molluscs and seaweed to support global nutritional security is underexploited. Management of pathogens, parasites, and pests remains a sustainability challenge industry-wide, and the effects of climate change on aquaculture remain uncertain and difficult to validate. Pressure on the aquaculture industry to embrace comprehensive sustainability measures during this 20-year period have improved the governance, technology, siting, and management in many cases.
Evaluating maize yield response to fertilizer and soil in Mexico using ground and satellite approaches
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Combining GEDI and Sentinel-2 for wall-to-wall mapping of tall and short crops
Global warming increased U.S. crop insurance losses by $27 billion in 27 years, Stanford study finds
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Higher temperatures attributed to climate change caused payouts from the nation’s biggest farm support program to increase by $27 billion between 1991 and 2017, according to new estimates from Stanford researchers. Costs are likely to rise even further with the growing intensity and frequency of heat waves and other severe weather events.
Two shifts for crop mapping: Leveraging aggregate crop statistics to improve satellite-based maps in new regions
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A million kernels of truth: Insights into scalable satellite maize yield mapping and yield gap analysis from an extensive ground dataset in the US Corn Belt
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Uniting remote sensing, crop modelling and economics for agricultural risk management
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