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.
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S2 E62 Should You Apply P, K, and Lime Prior to Seeding Turfgrass?
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Turner, T.R. and Waddington, D.V. (1983), Soil Test Calibration for Establishment of Turfgrass Monostands. Soil Science Society of America Journal, 47: 1161-1166. https://doi.org/10.2136/sssaj1983.03615995004700060021x Join Turfgrass Epistemology to get access to perks: https://www.youtube.com/channel/UC-UZnHkJhAmARDZ4YoHnc_A/join Voicemail: 859-44…
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S2 E61 Soil Testing: P, K, Mg, SO4-2, and Mn
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S2 E60 Soil Testing: pH, Salinity, and Cation Exchange Capacity
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S2 E59 Soil Testing: Methods and Philosophy
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S2 E58 Soil Testing: Sampling Depth and Timing
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1
S2 E57 Advanced Fertilizer Formulations for Turfgrass
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S2 E56 Fertilizer Ratios and Multi-Nutrient Raw Materials.
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S2 E55 Fertilizer Production, Ordering, and Formulation for Turfgrass
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S2 E54 Dr. Gregg Munshaw - What is Bluemuda?
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1
S2 E53 Fertilizer Raw Materials for Turfgrass
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1
S2 E51 Bias Against Disconfirmatory Evidence
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Woodward TS, Buchy L, Moritz S, Liotti M. A bias against disconfirmatory evidence is associated with delusion proneness in a nonclinical sample. Schizophr Bull. 2007 Jul;33(4):1023-8. doi: 10.1093/schbul/sbm013. Epub 2007 Mar 8. PMID: 17347526; PMCID: PMC2632321. Join Turfgrass Epistemology to get access to perks: https://www.youtube.com/channel/UC…
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Beseler CL, Stallones L, Hoppin JA, Alavanja MC, Blair A, Keefe T, Kamel F. Depression and pesticide exposures among private pesticide applicators enrolled in the Agricultural Health Study. Environ Health Perspect. 2008 Dec;116(12):1713-9. doi: 10.1289/ehp.11091. Epub 2008 Sep 9. PMID: 19079725; PMCID: PMC2599768. Join Turfgrass Epistemology to get…
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Kruger J, Dunning D. Unskilled and unaware of it: how difficulties in recognizing one's own incompetence lead to inflated self-assessments. J Pers Soc Psychol. 1999 Dec;77(6):1121-34. doi: 10.1037//0022-3514.77.6.1121. PMID: 10626367. Join Turfgrass Epistemology to get access to perks: https://www.youtube.com/channel/UC-UZnHkJhAmARDZ4YoHnc_A/join V…
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1
S2 E48 Repeated Statements and Illusory Truth
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Hasher, L., Goldstein, D., & Toppino, T. (1977). Frequency and the conference of referential validity. Journal of Verbal Learning & Verbal Behavior, 16(1), 107–112. https://doi.org/10.1016/S0022-5371(77)80012-1 Join Turfgrass Epistemology to get access to perks: https://www.youtube.com/channel/UC-UZnHkJhAmARDZ4YoHnc_A/join Voicemail: 859-444-4234 A…
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S2 E47 Mental Health Barriers in the U.S.
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Mojtabai R, Olfson M, Sampson NA, Jin R, Druss B, Wang PS, Wells KB, Pincus HA, Kessler RC. Barriers to mental health treatment: results from the National Comorbidity Survey Replication. Psychol Med. 2011 Aug;41(8):1751-61. doi: 10.1017/S0033291710002291. Epub 2010 Dec 7. PMID: 21134315; PMCID: PMC3128692. Join Turfgrass Epistemology to get access …
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S2 E46 Barriers to Mental Health Worldwide
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Andrade LH, Alonso J, Mneimneh Z, Wells JE, Al-Hamzawi A, Borges G, Bromet E, Bruffaerts R, de Girolamo G, de Graaf R, Florescu S, Gureje O, Hinkov HR, Hu C, Huang Y, Hwang I, Jin R, Karam EG, Kovess-Masfety V, Levinson D, Matschinger H, O'Neill S, Posada-Villa J, Sagar R, Sampson NA, Sasu C, Stein DJ, Takeshima T, Viana MC, Xavier M, Kessler RC. B…
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1
S2 E45 What Motivates You and Your Employees?
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Maslow, A. H. (1943). A theory of human motivation. Psychological Review, 50(4), 370–396. https://doi.org/10.1037/h0054346 Join Turfgrass Epistemology to get access to perks: https://www.youtube.com/channel/UC-UZnHkJhAmARDZ4YoHnc_A/join Voicemail: 859-444-4234 Apple Podcast https://podcasts.apple.com/us/podcast/turfgrass-epistemology/id1717271379 S…
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S2 E44 Topdressing Salt-Affected Fairways Using Humus
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Zhu, H., & Li, D. (2018). Using Humus on Golf Course Fairways to Alleviate Soil Salinity Problems. HortTechnology hortte, 28(3), 284-288. Retrieved Apr 28, 2024, from https://doi.org/10.21273/HORTTECH03989-18 Join Turfgrass Epistemology to get access to perks: https://www.youtube.com/channel/UC-UZnHkJhAmARDZ4YoHnc_A/join Voicemail: 859-444-4234 App…
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S2 E43 Humic-Coated Urea on Kentucky Bluegrass
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Lindsey, A. J., Thoms, A. W., McDaniel, M. D., & Christians, N. E. Plant-available soil nitrogen fluxes and turfgrass quality of Kentucky bluegrass fertilized with humic substances. Crop Science. 2021; 61: 4416–4424. https://doi.org/10.1002/csc2.20592 Join Turfgrass Epistemology to get access to perks: https://www.youtube.com/channel/UC-UZnHkJhAmAR…
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S2 E42 Dr. Ervin - Seaweed and Humic Acid Influence Bentgrass Drought Resistance
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Zhang, X. and Ervin, E.H. (2004), Cytokinin-Containing Seaweed and Humic Acid Extracts Associated with Creeping Bentgrass Leaf Cytokinins and Drought Resistance. Crop Science, 44: 1737-1745. https://doi.org/10.2135/cropsci2004.1737 Join Turfgrass Epistemology to get access to perks: https://www.youtube.com/channel/UC-UZnHkJhAmARDZ4YoHnc_A/join Voic…
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S2 E41 Bermudagrass Response to Microbial Inoculants.
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Bolton, C., Cabrera, M. L., Habteselassie, M., Poston, D., & Henry, G. M. (2022). The impact of commercially available microbial inoculants on bermudagrass establishment, aesthetics, and function. Crop, Forage & Turfgrass Management, 8, e20190. https://doi.org/10.1002/cft2.20190 Join Turfgrass Epistemology to get access to perks: https://www.youtub…
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S2 E40 Humic-coated Urea ≠ Better Turfgrass
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Lindsey AJ, Thoms AW, McDaniel MD, Christians NE. Evaluation of humic fertilizers on a sand-based creeping bentgrass putting green. Crop Science. 2021; 61: 3734–3745. https://doi.org/10.1002/csc2.20577 Join Turfgrass Epistemology to get access to perks: https://www.youtube.com/channel/UC-UZnHkJhAmARDZ4YoHnc_A/join Voicemail: 859-444-4234 Apple Podc…
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S2 E39 Late-Season Biostimulant Effects on Bermudagrass
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Munshaw, G.C., Ervin, E.H., Shang, C., Askew, S.D., Zhang, X. and Lemus, R.W. (2006), Influence of Late-Season Iron, Nitrogen, and Seaweed Extract on Fall Color Retention and Cold Tolerance of Four Bermudagrass Cultivars. Crop Science, 46: 273-283. https://doi.org/10.2135/cropsci2005.0078 Join Turfgrass Epistemology to get access to perks: https://…
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S2 E38 Biostimulant effects on creeping bentgrass.
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Ervin, E.H., Zhang, X., Goatley, J.M., Jr., & Askew, S.D. (2004). Trinexapac-ethyl, Propiconazole, Iron, and Biostimulant Effects on Shaded Creeping Bentgrass. HortTechnology horttech, 14(4), 500-506. Retrieved Apr 8, 2024, from https://doi.org/10.21273/HORTTECH.14.4.0500 Join Turfgrass Epistemology to get access to perks: https://www.youtube.com/c…
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S2 E37 Will Applied Potassium Protect Turfgrass from Winter Injury?
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Schmid, C.J., Murphy, J.A., Clarke, B.B., DaCosta, M. and Ebdon, J.S. (2016), Observations on the Effect of Potassium on Winter Injury of Annual Bluegrass in New Jersey in 2015. Crop, Forage & Turfgrass Management, 2: 1-4 cftm2015.0170. https://doi.org/10.2134/cftm2015.0170 Join Turfgrass Epistemology to get access to perks: https://www.youtube.com…
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S2 E36 Bermudagrass Response to Applied Potassium.
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Sartain, J.B. (2002), Tifway Bermudagrass Response To Potassium Fertilization. Crop Sci., 42: 507-512. https://doi.org/10.2135/cropsci2002.5070 Join Turfgrass Epistemology to get access to perks: https://www.youtube.com/channel/UC-UZnHkJhAmARDZ4YoHnc_A/join Voicemail: 859-444-4234 Apple Podcast https://podcasts.apple.com/us/podcast/turfgrass-episte…
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1
S2 E35 Can potassium enhance turfgrass shade tolerance?
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Cai, X., Trenholm, L. E., Kruse, J., & Sartain, J. B. (2011). Response of ‘Captiva’ St. Augustinegrass to Shade and Potassium. HortScience horts, 46(10), 1400-1403. Retrieved Mar 26, 2024, from https://doi.org/10.21273/HORTSCI.46.10.1400 Join Turfgrass Epistemology to get access to perks: https://www.youtube.com/channel/UC-UZnHkJhAmARDZ4YoHnc_A/joi…
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S2 E34 Nitrogen to Potassium Ratios for Bermudagrass.
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Snyder, G.H. and Cisar, J.L. (2000), Nitrogen/Potassium Fertilization Ratios for Bermudagrass Turf. Crop Sci., 40: 1719-1723. https://doi.org/10.2135/cropsci2000.4061719x Join Turfgrass Epistemology to get access to perks: https://www.youtube.com/channel/UC-UZnHkJhAmARDZ4YoHnc_A/join Voicemail: 859-444-4234 Apple Podcast https://podcasts.apple.com/…
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1
S2 E33 Will Potassium Increase or Decrease Anthracnose on Poa Annua?
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Schmid, C.J., Clarke, B.B. and Murphy, J.A. (2018), Potassium Nutrition Affects Anthracnose on Annual Bluegrass. Agronomy Journal, 110: 2171-2179. https://doi.org/10.2134/agronj2018.03.0147 Join Turfgrass Epistemology to get access to perks: https://www.youtube.com/channel/UC-UZnHkJhAmARDZ4YoHnc_A/join Live Show: M, T, W - 10:00 am EST Th - 9:00 pm…
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1
S2 E32 Centipedegrass Decline and Recovery Using N, P, and K.
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Johnson, B.J., Carrow, R.N. and Burns, R.E. (1988), Centipedegrass Decline and Recovery as Affected by Fertilizer and Cultural Treatments. Agron. J., 80: 479-486. https://doi.org/10.2134/agronj1988.00021962008000030018x Join Turfgrass Epistemology to get access to perks: https://www.youtube.com/channel/UC-UZnHkJhAmARDZ4YoHnc_A/join Live Show: M, T,…
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S2 E31 Dr. Woods - Potassium for Putting Green Turfgrass.
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Woods, M.S., Ketterings, Q.M., Rossi, F.S. and Petrovic, A.M. (2006), Potassium Availability Indices and Turfgrass Performance in a Calcareous Sand Putting Green. Crop Science, 46: 381-389. https://doi.org/10.2135/cropsci2005.0218 More information on Dr. Woods and on his potassium publication can be found here: https://www.asianturfgrass.com/public…
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S2 E30 Turfgrass Potassium. Soils Matter!
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Dest, W.M and K. Guillard. 2001. Bentgrass response to K fertilization and K release rates from eight sand rootzone sources used in putting green construction. Int. Turf. Soc. Res. J. 9:375-381. Join this channel to get access to perks: https://www.youtube.com/channel/UC-UZnHkJhAmARDZ4YoHnc_A/join Live Show: M, T, W - 10:00 am EST Th - 9:00 pm EST …
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S2 E29 Potassium Can Increase Disease on Turfgrass
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Bier, P.V., Persche, M., Koch, P. et al. A long term evaluation of differential potassium fertilization of a creeping bentgrass putting green. Plant Soil 431, 303–316 (2018). https://doi.org/10.1007/s11104-018-3765-8 Join this channel to get access to perks: https://www.youtube.com/channel/UC-UZnHkJhAmARDZ4YoHnc_A/join Live Show: M, T, W - 10:00 am…
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S2 E28 Remove or Return Turfgrass Clippings?
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Sartain, J.B. (1993), Interrelationships among Turfgrasses, Clipping Recycling, Thatch, and Applied Calcium, Magnesium, and Potassium. Agron. J., 85: 40-43. https://doi.org/10.2134/agronj1993.00021962008500010008x Live Show: M, T, W - 10:00 am EST Th - 9:00 pm EST Voicemail: 859-444-4234 Apple Podcast https://podcasts.apple.com/us/podcast/turfgrass…
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S2 E27 Potassium source and rate effect on creeping bentgrass
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Waddington, D.A., Moberg, E.L. and Duich, J.M. (1972), Effect of N Source, K Source, and K Rate on Soil Nutrient Levels and the Growth and Elemental Composition of Penncross Creeping Bentgrass, Agrostis palustris Huds. Agron. J., 64: 562-566. https://doi.org/10.2134/agronj1972.00021962006400050002x Live Show: M, T, W - 10:00 am EST Th - 9:00 pm EST…
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S2 E26 Potassium and Phosphorus on Creeping Bentgrass Putting Greens
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Johnson, P.G., Koenig, R.T. and Kopp, K.L. (2003), Nitrogen, Phosphorus, and Potassium Responses and Requirements in Calcareous Sand Greens. Agron. J., 95: 697-702. https://doi.org/10.2134/agronj2003.6970 Live Show: M, T, W - 10:00 am EST Th - 9:00 pm EST Voicemail: 859-444-4234 Apple Podcast https://podcasts.apple.com/us/podcast/turfgrass-epistemo…
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S2 E24 Long-Term Influence of N and K on Perennial Ryegrass Turf
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Ebdon, J.S., DaCosta, M., Spargo, J. and Dest, W.M. (2013), Long-term Effects of Nitrogen and Potassium Fertilization on Perennial Ryegrass Turf. Crop Science, 53: 1750-1761. https://doi.org/10.2135/cropsci2012.06.0395 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/turfg…
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S2 E23 Kentucky Bluegrass, Potassium, and Nitrogen.
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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 Spot…
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S2 E22 Dr. Richardson - Turfgrass Uptake of Foliar Urea
1:09:47
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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…
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S2 E21 Is UMaxx U-seless for Turfgrass?
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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/id17172…
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S2 E20 Type of Granular Urea Influences Nitrogen Volatilization from Turfgrass
1:06:44
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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 Sp…
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S2 E19 Kentucky Bluegrass Managed with Sprayable Nitrogen Programs
1:06:33
1:06:33
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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/p…
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S2 E18 How much water should you apply after applying urea?
1:15:11
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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 Sp…
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S2 E17 February 2024 Comments and Voicemail
1:45:57
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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 http…
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S2 E16 Dr. Christians - Do Urease Inhibitors Enhance Turfgrass Quality or Growth?
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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…
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S2 E15 Does NBPT increase N uptake in Kentucky bluegrass?
1:02:29
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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 Po…
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S2 E14 Is stabilized nitrogen worthless for turfgrass?
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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:…
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S2 E13 Turfgrass quality, urea, and dycandiamide. Is DCD worth the money?💵
1:05:34
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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/t…
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