The Long-Term Agroecosystem Research (LTAR) Network

We are a growing research network focused on developing national strategies that respond to the agricultural challenges of the 21th Century: food security and climate change.

Learn about LTAR research

The LTAR Network is a partnership among 18 premier long-term research sites across the United States.

The Network has a multifaceted focus on satisfying increasing demand for agricultural commodities, protecting the quality of the environment, and enhancing the quality of life in rural areas and the Nation as a whole.

Who We Are

The LTAR Network is a growing group of researchers focused on finding solutions that maintain or increase agricultural productivity, environmental quality, and people well-being in spite of pressures such as climate change.  Read more

Our Research Approach

The LTAR network combines strategic research projects with common measurements on multiple agroecosystems (croplands, rangelands, and pasturelands) and develops new technologies to address local and national challenges and opportunities.
Read more

Data Access

LTAR scientists are responsible for managing a rich legacy of data spanning over seventy years for many sites. Collectively, it is estimated LTAR manages [200+ terabytes] of data.
Read more

The 18 LTAR Network Sites

The 18 LTAR Network Sites collaborate in coordinated strategic research that leverages a rich legacy of research and data collection. Read more

(Click dots to open LTAR site page)

News

Events

View our latest publications
View our job announcements

LTAR Network Tweets ( @USLTAR )

US LTAR Follow

USLTAR
Retweet on Twitter US LTAR Retweeted
usda_ars Agricultural Research Service @usda_ars ·
29 Sep

Amazing! Check out this high-resolution, digital image of a flat mite! This mite likes feeding on coffee plants! Images like this one have won scientific photography awards for the ARS Electron and Confocal Microscopy Unit. https://loom.ly/xBi3Aok

#NationalCoffeeDay

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usda_ars Agricultural Research Service @usda_ars ·
15 Sep

Congrats! Dr. Michael Cosh receives 2022 Soil Moisture Community Leadership Award from @DroughtGov for demonstrating extraordinary commitment to building the soil moisture community of practice and delivering soil moisture-related products and services to support the public good.

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usda Dept. of Agriculture @usda ·
14 Sep

USDA investing up to $2.8 billion in 70 selected projects under the first pool of the Partnerships for Climate-Smart Commodities. Watch @SecVilsack's live remarks ➡️ http://www.usda.gov/live

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usltar US LTAR @usltar ·
12 Sep

ARS Scientists Transform an Overlooked Weed into a Stunning Success https://tellus.ars.usda.gov/stories/articles/hidden-in-plain-sight/

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usda_nass National Agricultural Statistics Service @usda_nass ·
2 Sep

The 2022 Census of Agriculture is coming this Fall. By responding and being represented in these widely used data, producers have a voice in the decisions that will shape the future of American agriculture. #AgCensus https://bit.ly/3wTFojf

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usda_ars Agricultural Research Service @usda_ars ·
6 Sep

We are committed to finding solutions to agricultural problems that affect American's from field to table. Learn about our research accomplishments in our 2021 ARS Annual Report on Science. https://loom.ly/DjQUm7c

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usltar US LTAR @usltar ·
8 Sep

Job announcement: Microbiologist/ Soil Scientist/ Ecologist in Beltsville, MD
https://www.usajobs.gov/job/675564000

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ABOUT LTAR

 

The USDA Agricultural Research Service (ARS) Long-Term Agroecosystem Research network consists of 18 Federal and university agricultural research sites with an average of over 50 years of history. The goal of this research network is to ensure sustained crop and livestock production and ecosystem services from agroecosystems, and to forecast and verify the effects of environmental trends, public policies, and emerging technologies.