Phosphate mineral weathering by carboxylic acids is driven by functional group composition and orientation July 2, 2026
Phosphate mineral weathering by carboxylic acids is driven by functional group composition and orientation July 2, 2026
HomePublicationsCrops & SoilsIssuesCrops & Soils: Volume 57, Issue 3Celebrating 30+ Years of Certification May 1, 2024 We recognize, congratulate, and thank the following professionals who have been certified for 30 or more years. Thank you for your continuing dedication, service, and commitment to excellence.AlaskaSparrow, Elena, Fairbanks, AK (CPSS)AlabamaPage, Sanderson, Fairhope, AL (CPSS)Simmons, Charles, Moulton, AL (CPSS)ArkansasSimmons, Eldon, Jonesboro, AR (CCA-AR)Whitby, C. Hugh, Wynne, AR (CCA-AR)Wood, Dennis, Wynne, AR (CCA-AR)CaliforniaArroues, Kerry, Hanford, CA (CPSS)Bruice, Carl, Rocklin, CA (CCA-WR, CA-NSp)Davis, Marie, Georgetown, CA (CPSS)Davis, Sidney, Georgetown, CA (CPSS, CPSC)Duckering, Dale, Clovis, CA (CPSS, CCA-WR, CA-NSp)Feenstra, Glenn, San Jacinto, CA (CCA-WR, SSp, MM, CA-NSp)Grangetto, Edward, Escondido, CA (CCA-WR, SSp, CA-NSp)Perry, Donald, Hollister, CA (CCA-WR, CA-NSp)Prichard, Terry, Oakdale, CA (CPSS, CCA-WR, CPAg, CA-NSp)Quist, Aron, Blythe, CA (CPSS, CCA-WR, CPAg, CA-NSp)Rahn, Bryan, Angwin, CA (CPSS, CCA-WR, CPAg, CA-NSp)Rittiman, Carl, Mendocino, CA (CPSS)Simmons, Ward, Riverside, CA (CCA-WR)Taskey, Ronald, Atascadero, CA (CPSS, CPSC)Wiley, Joel, Aromas, CA (CCA-WR, CA-NSp)ColoradoCarlson, Kenneth, Englewood, CO (CPSS)Nyenhuis, James, Fort Collins, CO (CPSS)Smith, Peter, Dacono, CO (CPSS, CPSC)ConnecticutCastanho, Martina, East Lyme, CT (CPSS)Fortunato, Donald, East Lyme, CT (CPSS)DelawareDownard, Ralph, Wilmington, DE (CPSS)FloridaBrown, Mark, Gainesville, FL (CPSS)Cooper, James, Tallahassee, FL (CPSS)Fox, Thomas, Yulee, FL (CPSS)Sawka, Gregory, Fort Pierce, FL (CPSS)Spindler, James, Lakeland, FL (CCA-FL, CPSS, CPAg)Sullivan, Kevin, Vero Beach, FL (CPSS, CPSC)GeorgiaKleto, Pete, Grantville, GA (CPSC)Kring, Timothy, Sugar Hill, GA (CPSC)Malik, Hameed, Martinez, GA (CPSS)Spotts, James, Atlanta, GA (CPSS)IowaAnderson, Barry, Ames, IA (CCA-NE, PASp)Bergeson, John, Runnells, IA (CCA-IA, 4R NMS, RMS)Franke, Quintin, Neola, IA (CCA-IA)Gomes, Shannon, Decorah, IA (CCA-IA, CPSS)Hillyer, Thomas, West Liberty, IA (CCA-IA)Kassel, Paul, Spencer, IA (CCA-IA, CPAg)Louscher, Scott, Paullina, IA (CCA-IA)Marlow, Michael, Bondurant, IA (CCA-OK)Mechler, Dean, Spencer, IA (CCA-IA)Metzger, Kurt, West Bend, IA (CCA-IA)White, Michael, Indianola, IA (CCA-IA, CPAg, SSp)IdahoMengel, Denny, Boise, ID (CPSS)IllinoisBellm, Robert, Eagarville, IL (CCA-IL)Beseke, Alan, Beecher, IL (CCA-IL)Bramstedt, Mark, Yorkville, IL (CPSS)Cate, Bradley, Savanna, IL (CPSS, CPSC)Dowell, Mark, Urbana, IL (CCA-IL)Elmer, Steven, Geneseo, IL (CPSS, CPSC)Ferrie, Kenneth, Heyworth, IL (CCA-IL, 4R NMS)Fitch, Bryan, Herrin, IL (CPSC)Follis, Robert, Galva, IL (CCA-IA)Forsberg, Roger, Clinton, IL (CCA-IL)Gaines, Douglas, Worden, IL (CPSS)Gucker, Douglas, Cisco, IL (CCA-IL)Huber, Ted, Windsor, IL (CCA-IL, 4R NMS)Kelsey, Patrick, Aurora, IL (CPSS, CPSC)Klemp Bosko, Mary, Wadsworth, IL (CPSS)Lenz, Gary, Hanna City, IL (CPSS, CPSC)Logan, Edward, Griggsville, IL (CCA-IL)Lohse, John, Rochester, IL (CPSS)Monken, Edward, Carlyle, IL (CCA-IL)Niemeyer, John, Breese, IL (CCA-IL, 4R NMS)Paul, Lyle, DeKalb, IL (CCA-IL)Schonert, Larry, Catlin, IL (CCA-IL)Shier, Marion, Chenoa, IL (CCA-IL)Smith, J. David, Windsor, IL (CCA-IL)Tarter, Kevin, Canton, IL (CCA-IL)Wambeke, Brian, Morrison, IL (CCA-IL)Weeks, Olaf, Wheaton, IL (CPSS)Wells, Robert, Bement, IL (CCA-IL, RMS)IndianaFlohr, Lewis, Frankfort, IN (CCA-IN, CPSS, CPAg)Jones, Robert, Carlisle, IN (CPSS, CPSC)McClain, Mark, Carmel, IN (CPSS, CPSC)Ralston, David, Newburgh, IN (CPSS)Wade, Steven, Linton, IN (CCA-RET, CPAg-RET, CPSS)KansasBauer, George, Hiawatha, KS (CCA-KS)Baxa, Lawrence, Ingalls, KS (CCA-KS)Ehrhart, Matt, Manhattan, KS (CCA-KS)Reneberg, Ronald, Kensington, KS (CCA-KS)Sohm, Gregory, Rolla, KS (CCA-KS)Williams, Jeffrey, Sabetha, KS (CCA-KS)LouisianaInman, Brad, Covington, LA (CPSS)MassachusettsAverill, Albert, Montague, MA (CPSS)Flaherty, Gary, Lakeville, MA (CPSS)Pickering, Edward, Cambridge, MA (CPSS)MarylandGerber, Timothy, Bel Air, MD (CPSS)Gross, Christoph, Ellicott City, MD (CPSS)Hoddinott, Keith, Street, MD (CPSC)Rabenhorst, Martin, College Park, MD (CCA-NR, CPSS, CPAg)MaineBakajza, George, Greenville Junction, ME (CPSS, CPSC)Noel, Joseph, South Berwick, ME (CPSS)MichiganMiller, Gerald, Grand Rapids, MI (CPSS)MinnesotaBalogh, James, Duluth, MN (CCA-MN, CPAg, 4R NMS)Broscoff, Kent, Howard Lake, MN (CCA-MN, CPAg)Carlson, Kevin, Pine City, MN (CCA-MN, CPAg)Crowley, Clement, Howard Lake, MN (CCA-MN)Danielson, Troy, Buffalo, MN (CCA-MN)Fasching, James, Waconia, MN (CCA-MN)Fore, Zachary, Mentor, MN (CCA-MN, CPAg)Fuchs, Dennis, Waite Park, MN (CCA-MN)Jacobs, Anthony, Lake Crystal, MN (CCA-MN)Jacobs, Brian, Alden, MN (CCA-MN)Koehler, Jeffrey, Belgrade, MN (CCA-MN)Mayer, Randy, Harmony, MN (CCA-MN)Meier, Brian, Sanborn, MN (CCA-MN)Miller, Jay, Rochester, MN (CCA-MN)Nicolai, David, Farmington, MN (CCA-MN)Scharf, Mark, Madison Lake, MN (CCA-MN)Tollberg, David, North Branch, MN (CCA-WI, CCA-MN)Vander Beek, John, Richmond, MN (CCA-MN)Whitmyer, Robert, Rice Lake, MN (CPSS)Williams, Brian, LeSueur, MN (CCA-MN)MissouriBoyles, Larry, Fisk, MO (CCA-MO)Briscoe, James, Memphis, MO (CCA-MO)Browning, Leland, Appleton City, MO (CCA-MO)Brush, Lyndon, Hartsburg, MO (CCA-MO, CPAg)DeWitt, Thomas, Rogersville, MO (CCA-MO, CPSS)Felton, Mark, Saint Louis, MO (CPSS)Flanary, Wayne, St Joseph, MO (CCA-MO, CPAg)Hoffman, C. Phillip, Trenton, MO (CCA-MO)Hoffman, Christopher, Trenton, MO (CCA-MO)Roberts, Rodney, Trenton, MO (CCA-MO)MississippiBrace, Gerald, Brandon, MS (CPSS)MontanaLarson, Michael, Bozeman, MT (CPSS)Surbrugg, J. Edward, Helena, MT (CPSS)North CarolinaBaldwin, Lawrence, Harkers Island, NC (CPSS, CPSC)Kays, Barrett, Raleigh, NC (CPSS)Lindbo, David, Pittsboro, NC (CPSS)North DakotaCihacek, Larry, Fargo, ND (CCA-ND, CPSS, CPAg)NebraskaGeis, Ronald, Newcastle, NE (CCA-NE)Larson, James, Gurley, NE (CCA-NE)Lloyd, Randy, North Platte, NE (CCA-NE)Schroeder, Larry, Omaha, NE (CCA-IA)Seybold, Cathy, Lincoln, NE (CPSS)Umland, Matthew, Jansen, NE (CCA-NE)Vrbka, Thomas, Bellevue, NE (CCA-NE)Ward, Raymond, Kearney, NE (CCA-NE, CPSS, CPAg)New HampshirePeragallo, Thomas, Rindge, NH (CPSS, CPSC)Ramborger, Terry, Peterborough, NH (CPSS)New JerseyLevine, Paul, East Windsor, NJ (CPSS)Salinas, Luis Miguel, Manalapan, NJ (CPSS)New YorkGilbert, Mallory, Troy, NY (CPSS)Hepner, Lawrence, South Kortright, NY (CPSS)Smith, Gerald, Elizabethtown, NY (CPSS)OhioBailey, Bruce, Canton, OH (CPSS)Haun, G. Wesley, West Liberty, OH (CCA-OH, CPSS, CPAg)OregonCampbell, Steven, Portland, OR (CPSS, CPSC)Kitzrow, Gary, Oakland, OR (CPSS, CPSC)Lewis, Dianne, La Grande, OR (CPSS)Ruby, Timothy, Portland, OR (CPSS)Wilson, Steven, Portland, OR (CPSS)PennsylvaniaBacon, Seth, Pottstown, PA (CPSS)Mueller, Laurel, Forksville, PA (CPSS, CPSC)Ratvasky, Timothy, Washington, PA (CPSS)Sams, Margaret, Venetia, PA (CPSS)South CarolinaDeFrancesco, Dennis, Simpsonville, SC (CPSS, CPSC)South DakotaHolm, Terry, Brandon, SD (CCA-MN)Malo, Douglas, Brookings, SD (CPSS)TexasDavol, Phebe, Florence, TX (CPSS)DeMuro, Gerald, El Paso, TX (CPSS)Janak, Edward, Fredericksburg, TX (CPSS)UtahNelson, Daniel, Syracuse, UT (CPSS)VirginiaEbodaghe, Denis, Petersburg, VA (CPSS)Sledjeski, William, Chantilly, VA (CPSS)VermontVillars, Thomas, Norwich, VT (CPSS)WashingtonGaarder, Jeffrey, Bainbridge Island, WA (CPSS)Hunner, Walter, Electric City, WA (CPSS)Palazzi, Lisa, Olympia, WA (CPSS)Shields, Walter, Seattle, WA (CPSS)Small, E. Philip, Spokane, WA (CPSS)Zupancic, John, Vancouver, WA (CPSS)WisconsinBenzel, Tracy, Mercer, WI (CPSS)Deutsch, Paul, Eagle, WI (CPSS, CCA-WR, CPAg, CA-NSp)Laing, Larry, Germantown, WI (CPSS)Liegel, Edward, Loganville, WI (CCA-WI, CPSS, CPAg, 4R NMS)West VirginiaKingsbury, David, Bruceton Mills, WV (CPSS)WyomingDeines, Steven, Pine Bluffs, WY (CCA-NE)Peak, Myra, Green River, WY (CPSS)Text © . The authors. CC BY-NC-ND 4.0. Except where otherwise noted, images are subject to copyright. Any reuse without express permission from the copyright owner is prohibited.Share this: Related articles Phosphate mineral weathering by carboxylic acids is driven by functional group composition and orientation July 2, 2026 USEPA launches innovation challenge to advance alternatives to crop desiccants July 2, 2026 Horton receives 2026 Dokuchaev Award July 1, 2026 Recent articles Storage of soil carbon in the Carolinas June 30, 2026 CCA exam registration open July 1–27 June 29, 2026 Senate releases farm bill draft as emergency aid proposal emerges June 29, 2026
Phosphate mineral weathering by carboxylic acids is driven by functional group composition and orientation July 2, 2026