The LTAR Network

We are a growing research network focused on developing national strategies for improved agricultural production. Our goal is to improve environmental quality and the well-being of farming communities while achieving increased agricultural production.

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


2023 LTAR Annual Meeting at WGEW

The 2023 Annual LTAR Meeting will be hosted by the Walnut Gulch Experimental Watershed site at Tombstone, AZ (the WGEW ...
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2022 LTAR Annual Meeting at CAF

The 2022 Annual LTAR Meeting will be hosted by the R. J. Cook Agronomy Farm (the CAF LTAR site). Register ...
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2021 LTAR Annual Meeting at LMRB

The 2021 Annual LTAR Meeting will take place virtually and will be hosted by the USDA ARS National Sedimentation Laboratory ...
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NSF NEON Workshop Announcement

Complex Landscapes at Scale: Integrating our Understanding of Managed and Unmanaged Lands at Regional to Continental Scales Growing societal pressure ...
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2020 LTAR Annual Meeting at KBS

The 2020 Annual LTAR Meeting will take place virtually and will be hosted by the Kellogg Biological Station Location: Virtually at ...
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LTAR Tweets ( @USLTAR )

New publication: Gridded 20-year climate parameterization of Africa and South America for a stochastic weather generator (CLIGEN)

Water Wisdom! What new approaches is ARS taking to meet emerging challenges to water availability? Teferi Tsegaye, National Program Leader for Water Availability and Watershed Management explains in this ARS Under the Microscope interview

Job announcement: Supervisory Research Microbiologist/Ecologist/Soil Scientist, Ames, IA

Webinar: Addressing Water Quality Outcomes Through Nutrient and Water Management

Want to learn more about SMART nutrient and water management strategies? The NRCS Conservation Outcomes webinar with Dr. Kevin King of @USDA_ARS can help! Access the webinar recording here 👉

Kudos! The ARS Southwest Watershed Research Center is the recipient of @nature_org’s 2022 Morris K. Udall Award for Outstanding Conservation Achievement for their significant contributions and for demonstrating sincere and sustained commitment to conservation in AZ.

Water Wisdom: Farmers Must Prepare for a Drier Future

ARS scientists have found that intercropping, growing a healthy mix of plants, can be an effective tactic for increasing the productivity and sustainability of agriculture.

#DiscoverARS | #SustainabilityDay

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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.