NASA Satellites Keep Watch on U.S. Food Supply

The USDA uses Landsat satellite data to track crop acreage and yield across the U.S. This program, which began in 1997, expanded significantly after Landsat data became free in 2008, allowing the USDA to map 48 states. The data helps estimate crop yields, aiding farmers and traders in setting prices. The detailed satellite imagery reveals crop patterns and changes, such as crop rotation and shifts in crop types. The open access to this data supports farmers and helps maintain the nation's food supply.

What technology does the USDA use to track crop production across the United States?

• Drones

• Landsat satellites

• GPS devices

• Weather balloons

In what year did Landsat data become free to use, allowing the USDA to map 48 states?

• 1997

• 2012

• 2000

• 2008

How does the USDA use Landsat data during the growing season?

• To monitor soil quality

• To estimate crop yields

• To track pest infestations

• To predict weather patterns

What agricultural pattern is easily observed in the Midwest using USDA data?

• Crop rotation between corn and soybeans

• Increase in rice fields

• Decrease in citrus production

• Expansion of wheat fields

What shift in crop types was observed in northern North Dakota?

• From citrus to cotton

• From barley and wheat to soybeans and canola

• From corn to rice

• From soybeans to wheat