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National Program 211: Water Availability and Watershed Management
Long-Term Agroecosystem Research (LTAR) Network
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The Long-Term Agroecosystem Research (LTAR) Network
As the 21st century unfolds, agriculture will face a series of challenges - in the United States and globally - in providing sufficient food, fiber, and fuel to support a growing global population while our natural resources, environmental health, and available arable land decline and climate changes.  Click here to read the full version of this Abstract.

Related Documents

LTAR Shared Research Strategy (pdf)

Common Observatory Meteorology Data Concept of Operations (pdf)

Building the LTAR Data Portal (January 2016) (pdf)

LTAR Fact Sheet (pdf)

LTAR Poster (May 2017) (pdf)

ARS Site Contact Information (pdf)

2012 Request for Information (RFI) (pdf)

2011 Request for Information (RFI) (pdf)

Organizations currently collaborating with one or more Long-Term Agro-ecosystem Research (LTAR) network sites (pdf)


"Dense Gauge Network Confirms Improvement in TRMM Radar Rainfall Intensity Estimates"


Current LTAR website:

LTAR’s 18 Research Sites

Map of current LTAR Sites by Farm Source Regions