Steel slag is just one of the materials that can be used to filter #phosphorus in domestic #wastewater systems. However, bicarbonate alkalinity kills slag. Courtesy of my Canadian friends. It was a pleasant surprise that the system removed some #nitrogen. authors.elsevier.com/sd/article/S22…

Rollout of the mobile demonstration #phosphorus removal structure at the IN MS4 stormwater conf, by Austin White (pictured). Mobile lab constructed by Apex Instruments Apex Instruments high quality low cost. They did an outstanding job.

The mobile demo P removal structure (PRS) brings the field day to you when you don't have a PRS to show in-field. All we need is a source of water with high dissolved P to demonstrate. Drop in pump, filter, measure before-after. Big screen and awning for presentations as well.

#jobpost Our research facility is hiring a new technician for conducting water quality and fertility experiments, and analyze soil and water samples. usajobs.gov/job/796014900 If you apply, please check all the boxes indicating you are qualified so I can see your application

Snapshot of V14 #corn grown in our indoor grow-room compared to greenhouse and field. Greenhouse corn is tall and spindly compared to grow-room and field due to less-than-ideal light conditions (etiolation). Grow-room is thick on the stem and leaves.

Kurt Reinhart just published this (open for 50 days). My first involvement on a #mycorrhizae project. These plants in calcareous soils obtained more of the poorly soluble #phosphorus by root mining/exudates than through mycorrhizae. authors.elsevier.com/a/1jvM88g13bSv-

The first stacked #phosphorus removal structure-nitrogen bioreactor. elibrary.asabe.org/abstract.asp?a… Surprised it worked that well with such low inflow P concentrations. A mystery on how alumina removed N in this scenario. Need to construct them to handle peak flow rates.

Sometimes we use filters to remove #phosphorus from wastewater during treatment. Sometimes they clog. Amin's new paper describes how/why and prevention. doi.org/10.1016/j.jenv… Congrats to Amin, this one was a lot of work.

Speaker spotlight: At the North American Drainage Conference, House of Phos will offer a refresher on phosphorus removal structures, plus a walkthrough of P-Trap software to design these structures. Don't miss this unique opportunity - register today! drainagecontractor.com/virtual-events…

Potholes tend to become #phosphorus hotspots and represent the most economical intercession point for trapping P, especially for replacing a tile riser with a modified blind inlet. Hear Mark Williams Mark Williams and I explain: youtu.be/i0L0NzdH6bY

Luca Amaro, a visiting student agronomist from Brazil, got a surprise when his parents and brother came to visit at the National Soil Erosion Research Laboratory!

Putting out #phosphorus plots on low P soils. Pic on left is the saltshaker application method for extreme precision; even if you have a thimble-full remaining, you walk around the plot six times to distribute it evenly! Joking.....sort of.

This one is for Chris K. , some reading material if you have trouble falling asleep.....#phosphorus uptake and timing. mdpi.com/2073-4395/14/1…

A new blog post based on data from a not-new paper. How excess #phosphorus can potentially limit corn grain yield in certain circumstances. Courtesy of the Sustainable Phosphorus Alliance. phosphorusalliance.org/2025/06/11/how…

We are looking for a post-doc to come to Purdue and work on #phosphorus transport. I pasted the job description on a post in LinkedIn linkedin.com/posts/chad-pen…

Open access paper on #phosphorus uptake in Era hybrids going back to 1932. Editor's choice award. This study purposely excludes effect of root architecture by using sand-culture hydroponics, to solely measure P utilization efficiency in Era hybrids mdpi.com/2073-4395/15/6…

Showing the P-Trap demonstration #phosphorus removal structure at Dekalb county field day, hosted by The Andersons. Austin White with ARS and Ben Wicker of the IN Ag Nutrient Alliance. I should of got a pic with the audience...

#phosphorus filtration by steel shavings/gravel. Media needs to stay moist with no wet-dry cycles or it may solidify (but still drains well). Picture on left are such clods, while material on right was in bottom-up structure with no drying, remaining unconsolidated for 3 years.

Another option for steel turnings is to place a water-table control structure on the drainage-side of the P removal structure to maintain water table just below the surface of filter media, still allowing top-down drainage. This one stayed moist and unconsolidated.

Free access for 50 days. Perhaps for the first time ever, we were able to "dial in" wavelength ratios for sensing #phosphorus deficiency in corn. We could identify medium-deficient hidden-hunger that showed no visible signs of deficiency. gcc02.safelinks.protection.outlook.com/?url=https%3A%…