Mark Williams

Please complete self evaluation as being "highly qualified" in each category or else bean counters in DC may not send us your application. Work in cutting edge water and soil quality, erosion, and fertility research! ars.usda.gov/midwest-area/w…

Job Opening: Category 3 scientist at West Lafayette ARS unit on Purdue campus. Combination water quality/agronomic work. If you have experience in one, we can train you for other. Starts at GS-9, can move to GS-11 in one year. usajobs.gov/job/659150100

Through the Long-term Agroecosystem Research network, a rich dataset was compiled, P-FLUX, to better understand the variability of #Phosphorus inputs, outputs, and budget across several production systems @AgriH2O @USLTAR @USDA_ARS @HenryW_AAFC More info doi.org/10.1002/jeq2.2…

A new issue of JEQ is online - featuring an article on P-FLUX #phosphorus budget dataset acsess.onlinelibrary.wiley.com/toc/15372537/2…

Collecting intact soil boxes today and tomorrow. Beautiful day in the field! #NSERL

Great time at the DC United game tonight - thanks @publicservice

Great to connect with all the amazing #Sammies2022 finalists! @USDA_ARS @publicservice

Congratulations to Dr. Mark Williams who was named a finalist for a Samuel J. Heyman Service to America Medal in recognition of his pioneering research to protect water quality and aquatic life from pollutants in agricultural runoff 🏅 servicetoamericamedals.org/honorees/mark-… #SAMMIES2022 #PSRW

Check out the new @USDA_NRCS video on the western Lake Erie basin featuring myself, @ChadPenn12, @laura261, @kevin_king7, and more! @USDA_ARS @USLTAR youtu.be/-LB8qg97pfw via @YouTube

@merrinm Same to you! This paper has a new personal record of 46 co-authors! @USLTAR

New paper alert! Always enjoyable to collaborate with @AgriH2O

New in JEQ - P-FLUX: A #phosphorus budget #dataset spanning diverse agricultural production systems in the USA and Canada - Williams et al. doi.org/10.1002/jeq2.2… #OpenAccess @USDA_ARS @AgriH2O

@bellseeds #NSERL stands for National Soil Erosion Research Laboratory. We are a USDA lab that does research on drainage, erosion, nutrient transport, conservation, and soil fertility.

@AgriH2O Hi mark . This is very cool. I have done some significant testing of water from tile drains vs open run off. Are you guys looking at aquifer storage post tile drainage? What does #nserl stand for.?

Making in rain again today at #NSERL

Hearing the benefits of long term research from the man himself, Dr. Kevin King. It’s pricey but priceless. #LTAR #ResearchGoals @USDA_ARS

@dcfdlf81 @kevin_king7 Propane heater malfunction

@AgriH2O @kevin_king7 What happened?! Lightning strike?

Kevin’s research is always ‘well done’! 🔥@kevin_king7

@kkult @kevin_king7 Latest edge-of-field results…Yes. Burning equipment…No.

@AgriH2O @kevin_king7 Will this be on the tour in April 😬

@kevin_king7 is always working on the hottest 🔥 research topics!

@ChadPenn12 Big roots and and wet runoff boxes. Good start to the week at #NSERL

Harvesting at various growth stages for N study. Purely artificial conditions, 99% silica sand, zero organics. Poor #SoilHealth. Little to no biology. Still, very healthy plants and look at those roots!

In a single soil we released anywhere from 1 to 450 mg P/kg with only water, depending on flow character. Chemical process of #phosphorus desorption is realized through physical processes, impacting transport and plant uptake mdpi.com/2571-8789/6/1/6