Travis Shaddox

Turfgrass Epistemology

Education EN ↓ 285 episodes

This podcast explores how we know what we know about turfgrass science. If you are a lawn care operator, sport field manager, sod producer, golf superintendent, or a home owner, this podcast provides evidence-based information to help you better manage your turfgrass.

Author

Travis Shaddox

Episodes

S2 E23 Kentucky Bluegrass, Potassium, and Nitrogen. 05.03.2024 1:21:09

Fitzpatrick, R.J.M. and Guillard, K. (2004), Kentucky Bluegrass Response to Potassium and Nitrogen Fertilization. Crop Science, 44: 1721-1728. https://doi.org/10.2135/cropsci2004.1721 Live Show: M, T, W - 10:00 am EST W - 9:00 pm EST Voicemail: 859-444-4234 Apple Podcast https://podcasts.apple.com/us/podcast/turfgrass-epistemology/id1717271379 Spotify Podcast https://open.spotify.com/show/1cTpdrC...

S2 E22 Dr. Richardson - Turfgrass Uptake of Foliar Urea 01.03.2024 1:09:47

Stiegler, J.C., Richardson, M.D. and Karcher, D.E. (2011), Foliar Nitrogen Uptake Following Urea Application to Putting Green Turfgrass Species. Crop Sci., 51: 1253-1260. https://doi.org/10.2135/cropsci2010.06.0377 Live Show: M, T, W - 10:00 am EST W - 9:00 pm EST Voicemail: 859-444-4234 Apple Podcast https://podcasts.apple.com/us/podcast/turfgrass-epistemology/id1717271379 Spotify Podcast https:...

S2 E21 Is UMaxx U-seless for Turfgrass? 29.02.2024 1:05:01

Guertal, E.A. and Howe, J.A. (2012), Nitrate, Ammonium, and Urea Leaching in Hybrid Bermudagrass as Affected by Nitrogen Source. Agron. J., 104: 344-352. https://doi.org/10.2134/agronj2011.0262 Live Show: M, T, W - 10:00 am EST W - 9:00 pm EST Voicemail: 859-444-4234 Apple Podcast https://podcasts.apple.com/us/podcast/turfgrass-epistemology/id1717271379 Spotify Podcast https://open.spotify.com/sh...

S2 E20 Type of Granular Urea Influences Nitrogen Volatilization from Turfgrass 29.02.2024 1:06:44

Volk, G.M. (1959), Volatile Loss of Ammonia Following Surface Application of Urea to Turf or Bare Soils. Agron. J., 51: 746-749. https://doi.org/10.2134/agronj1959.00021962005100120016x Live Show: M, T, W - 10:00 am EST W - 9:00 pm EST Voicemail: 859-444-4234 Apple Podcast https://podcasts.apple.com/us/podcast/turfgrass-epistemology/id1717271379 Spotify Podcast https://open.spotify.com/show/1cTpd...

S2 E19 Kentucky Bluegrass Managed with Sprayable Nitrogen Programs 28.02.2024 1:06:33

Moore, R.W., Christians, N.E. and Agnew, M.L. (1996), Response of Three Kentucky Bluegrass Cultivars to Sprayable Nitrogen Fertilizer Programs. Crop Science, 36: 1296-1301. https://doi.org/10.2135/cropsci1996.0011183X003600050037x Live Show: M, T, W - 10:00 am EST W - 9:00 pm EST Voicemail: 859-444-4234 Apple Podcast https://podcasts.apple.com/us/podcast/turfgrass-epistemology/id1717271379 Spotif...

S2 E18 How much water should you apply after applying urea? 27.02.2024 1:15:11

Bowman, D. C., Paul, J. L., Davis, W. B., & Nelson, S. H. (1987). Reducing Ammonia Volatilization from Kentucky Bluegrass Turf by Irrigation. HortScience, 22(1), 84-87. https://doi.org/10.21273/HORTSCI.22.1.84 Live Show: M, T, W - 10:00 am EST W - 9:00 pm EST Apple Podcast https://podcasts.apple.com/us/podcast/turfgrass-epistemology/id1717271379 Spotify Podcast https://open.spotify.com/show/1...

S2 E17 February 2024 Comments and Voicemail 22.02.2024 1:45:57

Live calls and voice mail: 859-444-4234 Live Show: M, T, W - 10:00 am EST W - 9:00 pm EST Apple Podcast https://podcasts.apple.com/us/podcast/turfgrass-epistemology/id1717271379 Spotify Podcast https://open.spotify.com/show/1cTpdrChToeEFAOX9wkXFI iHeart Radio Podcast https://www.iheart.com/podcast/1323-turfgrass-epistemology-129043524/ Podbean https://turfgrassepistemology.podbean.com/ Online con...

S2 E16 Dr. Christians - Do Urease Inhibitors Enhance Turfgrass Quality or Growth? 22.02.2024 37:50

Joo, Y.K., Christians, N.E., Spear, G.T. and Bremner, J.M. (1992), Evaluation of Urease Inhibitors as Urea Amendments for Use on Kentucky Bluegrass Turf. Crop Science, 32: 1397-1401 cropsci1992.0011183X003200060018x. https://doi.org/10.2135/cropsci1992.0011183X003200060018x Live calls and voice mail: 859-444-4234 Live Show: M, T, W - 10:00 am EST W - 9:00 pm EST Apple Podcast https://podcasts.app...

S2 E15 Does NBPT increase N uptake in Kentucky bluegrass? 21.02.2024 1:02:29

Joo, Y.K., Christians, N.E. and Blackmer, A.M. (1991), Kentucky Bluegrass Recovery of Urea-Derived Nitrogen-15 Amended with Urease Inhibitor. Soil Science Society of America Journal, 55: 528-530. https://doi.org/10.2136/sssaj1991.03615995005500020039x Live calls and voice mail: 859-444-4234 Live Show: M, T, W - 10:00 am EST W - 9:00 pm EST Apple Podcast https://podcasts.apple.com/us/podcast/turf...

S2 E14 Is stabilized nitrogen worthless for turfgrass? 15.02.2024 1:05:50

Henning, S.W., Branham, B.E. & Mulvaney, R.L. Response of turfgrass to urea-based fertilizers formulated to reduce ammonia volatilization and nitrate conversion. Biol Fertil Soils 49, 51–60 (2013). https://doi.org/10.1007/s00374-012-0696-z Live calls and voice mail: 859-444-4234 Live Show: M, T, W - 10:00 am EST W - 9:00 pm EST Apple Podcast https://podcasts.apple.com/us/podcast/turfgrass-epi...

S2 E13 Turfgrass quality, urea, and dycandiamide. Is DCD worth the money?💵 14.02.2024 1:05:34

Mosdell, D.K., Daniel, W.H. and Freeborg, R.P. (1986), Evaluation of Dicyandiamide-Amended Fertilizers on Kentucky Bluegrass. Agron. J., 78: 801-806. https://doi.org/10.2134/agronj1986.00021962007800050012x Live calls and voice mail: 859-444-4234 Live Show: M, T, W - 10:00 am EST W - 9:00 pm EST Apple Podcast https://podcasts.apple.com/us/podcast/turfgrass-epistemology/id1717271379 Spotify Podcas...

S2 E12 Liquid Nitrogen Applied to Kentucky Bluegrass. 13.02.2024 1:38:31

Spangenberg, B.G., Fermanian, T.W. and Wehner, D.J. (1986), Evaluation of Liquid-Applied Nitrogen Fertilizers on Kentucky Bluegrass Turf. Agron. J., 78: 1002-1006. https://doi.org/10.2134/agronj1986.00021962007800060014x Live calls and voice mail: 859-444-4234 Live Show: M, T, W - 10:00 am EST W - 9:00 pm EST Apple Podcast https://podcasts.apple.com/us/podcast/turfgrass-epistemology/id1717271379...

S2 E11 One Nitrogen Application per Year. Will it Work? 08.02.2024 1:03:07

Soldat, D.J., Petrovic, A.M. and Barlow, J. (2008). Turfgrass Response to Nitrogen Sources with Varying Nitrogen Release Rates. Acta Hortic. 783, 453-462 Live calls and voice mail: 859-444-4234 Live Show: M, T, W - 10:00 am EST W - 9:00 pm EST Apple Podcast https://podcasts.apple.com/us/podcast/turfgrass-epistemology/id1717271379 Spotify Podcast https://open.spotify.com/show/1cTpdrChToeEFAOX9wkXF...

S2 E10 Nitrogen Fertilizer Pricing 08.02.2024 1:38:03

Shaddox, T. W., & Unruh, J. B. (2021). Determining Nitrogen Fertilizer Cost Using Turfgrass Response. HortTechnology. 31(4), 470-478. Live calls and voice mail: 859-444-4234 Live Show: M, T, W - 10:00 am EST W - 9:00 pm EST Apple Podcast https://podcasts.apple.com/us/podcast/turfgrass-epistemology/id1717271379 Spotify Podcast https://open.spotify.com/show/1cTpdrChToeEFAOX9wkXFI iHeart Radio P...

S2 E9 Turfgrass Response to Various Nitrogen Sources 07.02.2024 1:38:19

Landschoot, P.J., and D.V. Waddington. 1987. Response of turfgrass to various nitrogen sources. Soil Sci. Soc. Am. J. 51:225-230. Live calls and voice mail: 859-444-4234 Live Show: M, T, W - 10:00 am EST W - 9:00 pm EST Apple Podcast https://podcasts.apple.com/us/podcast/turfgrass-epistemology/id1717271379 Spotify Podcast https://open.spotify.com/show/1cTpdrChToeEFAOX9wkXFI iHeart Radio Podcast h...

S2 E8 Turfgrass Response to Slow Release Nitrogen Fertilizer 06.02.2024 1:39:21

Carrow, R.N. (1997), Turfgrass Response to Slow-Release Nitrogen Fertilizers. Agron. J., 89: 491-496. Live calls and voice mail: 859-444-4234 Live Show: M, T, W - 10:00 am EST W - 9:00 pm EST Apple Podcast https://podcasts.apple.com/us/podcast/turfgrass-epistemology/id1717271379 Spotify Podcast https://open.spotify.com/show/1cTpdrChToeEFAOX9wkXFI iHeart Radio Podcast https://www.iheart.com/podca...

S2 E7 Dr. Glen Obear - Iron Cementing Layers in Golf Putting Greens. 04.02.2024 1:16:56

Glen R. Obear, Alfred E. Hartemink, Douglas J. Soldat. 2014. Soils with iron-cemented layers on golf courses in the USA, Geoderma 232–234:198-207. Live calls and voice mail: 859-444-4234 Live Show: M, T, W - 10:00 am EST W - 9:00 pm EST Apple Podcast https://podcasts.apple.com/us/podcast/turfgrass-epistemology/id1717271379 Spotify Podcast https://open.spotify.com/show/1cTpdrChToeEFAOX9wkXFI iHear...

S2 E6 The soil pH diagram - soil mineralogical and chemical issues. 20.01.2024 1:52:15

Barrow, N.J., Hartemink, A.E. The effects of pH on nutrient availability depend on both soils and plants. Plant Soil 487, 21–37 (2023). Live calls and voice mail: 859-444-4234 Live Show: M, T, W - 10:00 am EST W - 9:00 pm EST Apple Podcast https://podcasts.apple.com/us/podcast/turfgrass-epistemology/id1717271379 Spotify Podcast https://open.spotify.com/show/1cTpdrChToeEFAOX9wkXFI iHeart Radio Pod...

S2 E5 The soil pH diagram. A review. 11.01.2024 1:06:51

Hartemink, A.E., Barrow, N.J. Soil pH - nutrient relationships: the diagram. Plant Soil 486, 209–215 (2023). Live calls and voice mail: 859-444-4234 Live Show: M, T, W - 10:00 am EST W - 9:00 pm EST Calendly.com/TravisShaddox Twitter.com/TravisShaddox

S2 E4 Iron source effect on bentgrass. 11.01.2024 1:24:54

Glinski, D.S., Carrow, R.N. and Karnok, K.J. (1992), Iron Fertilization Effects on Shoot/Root Growth, Water Use, and Drought Stress of Creeping Bentgrass. Agron. J., 84: 496-503. Live calls and voice mail: 859-444-4234 Live Show: M, T, W - 10:00 am EST W - 9:00 pm EST Calendly.com/TravisShaddox Twitter.com/TravisShaddox

S2 E3 Iron applied with elemental sulfur. 10.01.2024 1:16:48

Ryan C. Christensen , Bryan G. Hopkins hopkins@byu.edu , Von D. Jolley , Kelly M. Olson , Christopher M. Haskell , Nicholas J. Chariton & Bruce L. Webb (2012) ELEMENTAL SULFUR IMPREGNATED WITH IRON AS A FERTILIZER SOURCE FOR KENTUCKY BLUEGRASS, Journal of Plant Nutrition, 35:12, 1878-1895. Live calls and voice mail: 859-444-4234 Live Show: M, T, W - 10:00 am EST W - 9:00 pm EST Calendly.com/T...

S2 E2 Granular vs. foliar Fe, Mn, and Mg fertilizers for turfgrass 09.01.2024 1:30:52

Shaddox TW, Unruh JB, Restuccia NG. St. Augustinegrass quality and nutrient content in response to granular and foliar iron, manganese, and magnesium. Crop Science. 2020;60:3314–3327. Live calls and voice mail: 859-444-4234 Live Show: M, T, W - 10:00 am EST W - 9:00 pm EST Calendly.com/TravisShaddox Twitter.com/TravisShaddox

S2 E1 How long does iron fertilizer remain soluble in soil? 05.01.2024 1:25:29

Shaddox, T.W., Fu, H., Gardner, D.S., Goss, R.M., Guertal, E.A., Kreuser, W.C., Miller, G.L., Stewart, B.R., Tang, K. and Unruh, J.B. (2019), Solubility of Ten Iron Fertilizers in Eleven North American Soils. Agronomy Journal, 111: 1498-1505. Live calls and voice mail: 859-444-4234 Live Show: M, T, W - 10:00 am EST W - 9:00 pm EST Calendly.com/TravisShaddox Twitter.com/TravisShaddox

S1 E62 Live calls and comments! 28.12.2023 1:42:40

I discuss a thatch video claiming to reducing thatch by applying natural organic products, address two comments from an iron video, and talk to callers about iron, soil tests, etc. Live calls and voice mail: 859-444-4234 Live YouTube Show: M, T, W - 10:00 am EST W - 9:00 pm EST Calendly.com/TravisShaddox Twitter.com/TravisShaddox

S1 E61 Comments and emails! 21.12.2023 1:37:38

Live calls: 859-444-4234 Calendly.com/TravisShaddox Twitter.com/TravisShaddox