Turfgrass Epistemology

This video examines the 2019 study “Evaluation of Water Retention Products to Conserve Urban Water Resources in Home Lawns” by Vikram B. Baliga, Joseph R. Young, and Mario A. Carrillo, exploring wetting agents, hydrophilic sands, drought stress, and bermudagrass water conservation.  #WaterRetention #WettingAgents #Bermudagrass #LawnCare #SoilMoisture #TurfScience 📌 https://www.gofundme.com/f/Turf...

This video examines the 2001 study “Effects of Flutolanil Fungicide and Primer Wetting Agent on Soil Water Repellency in Creeping Bentgrass” by Karnok and colleagues, exploring flutolanil, Primer wetting agent, hydrophobic soil, and turfgrass management. #SoilWaterRepellency #WettingAgents #Flutolanil #LocalizedDrySpot #GolfCourseManagement #TurfScience 📌 https://www.gofundme.com/f/TurfgrassEpist...

This video examines “Localized Dry Spots as Caused by Hydrophobic Sands on Bentgrass Greens” by Tucker and colleagues (1990), investigating water-repellent sand, organic coatings on sand particles, soil moisture, and localized dry spots on golf putting greens. #HydrophobicSand #LocalizedDrySpot #SoilWaterRepellency #GolfGreens #TurfScience #WettingAgents 📌 https://www.gofundme.com/f/TurfgrassEpis...

This video examines research comparing Aqueduct, Primer, Cascade, and LESCOFlo for managing localized dry spot and soil water repellency in turfgrass—and the results may challenge how we choose among turfgrass wetting agents.      #Turfgrass #WettingAgents #GolfCourseManagement #TurfScience #LocalizedDrySpot 📌 https://www.gofundme.com/f/TurfgrassEpistemology Thank you for being part of this commu...

This video examines research comparing low and high surfactant rates for managing soil water repellency, localized dry spot (LDS), turf quality, and wilting—and asks whether more product actually provides more benefit.  #Turfgrass #WettingAgents #GolfCourseManagement #SoilScience #LocalizedDrySpot 📌 https://www.gofundme.com/f/TurfgrassEpistemology Thank you for being part of this community and fo...

This video examines the 1987 study “Root Growth, Seedhead Production, and Quality of Annual Bluegrass as Affected by Mefluidide and a Wetting Agent” by R. J. Cooper, P. R. Henderlong, J. R. Street, and K. J. Karnok, exploring seedhead suppression, root growth, and turf quality in annual bluegrass. #PoaAnnua #RootGrowth #WettingAgents #Turfgrass #GolfCourseManagement #TurfScience 📌 https://www.gof...

This video examines the 1985 study “Annual Bluegrass Growth and Quality as Influenced by Treatments of Growth Retardants” by A. M. Petrovic, R. A. White, and M. K. Bhowmik, including the surprising effects of Aqua Gro on annual bluegrass seedhead production and turf quality. #PoaAnnua #WettingAgents #Turfgrass #GolfCourseManagement #TurfScience 📌 https://www.gofundme.com/f/TurfgrassEpistemology T...

This video examines the 1978 study “Investigation and Treatment of Localized Dry Spots on Sand Golf Greens” by J. F. Wilkinson and R. H. Miller, exploring soil water repellency, wetting agents, coring, and water infiltration in creeping bentgrass greens. #LocalizedDrySpot #WettingAgents #GolfGreens #Turfgrass #SoilScience #TurfScience 📌 https://www.gofundme.com/f/TurfgrassEpistemology Thank you f...

This video examines the 1977 study “Effect of Management Practices on Thatch Accumulation, Turf Quality, and Leaf Spot Damage in Common Kentucky Bluegrass” by J. J. Murray and F. V. Juska, including the surprising effects of wetting agents on leaf spot, turf quality, and thatch. #WettingAgents #Turfgrass #KentuckyBluegrass #LeafSpot #TurfScience #SoilScience #turfmanagement  📌 https://www.gofundm...

Can CytoGro + Hydretain really reduce irrigation water use in turfgrass? In this video, I examine the science behind cytokinins, plant growth regulators, and Hydretain to determine whether these products actually improve turfgrass water-use efficiency and drought tolerance—or whether the claims exceed the evidence. #Turfgrass #Hydretain #CytoGro #Irrigation #WaterConservation #TurfScience 📌 https...

Does Mirimichi Green CarbonPro-G really “unlock” nutrients—or could some of the turf response come from nutrients already in the product? In this commentary, we examine the CarbonPro-G marketing claims, product label, and what turf managers should consider when evaluating soil amendments. #CarbonProG #LESCO #Turfgrass #SoilAmendments #TurfManagement #GolfCourseManagement 📌 https://www.gofundme.co...

Where do wetting agents actually go after they enter the soil? This video explores the 1975 study “Movement of Two Nonionic Surfactants in Wettable and Water-Repellent Soils” by R. H. Miller, N. Valoras, and J. Letey, examining surfactant movement, adsorption, retention, and leaching in soils. #WettingAgents #Surfactants #Turfgrass #SoilScience #WaterRepellentSoil #GolfCourseManagement #TurfScienc...

Can surfactants harm turfgrass roots and reduce plant growth? This video examines the science from “Effects of Nonionic Surfactants on Monocots” by R. M. Endo, J. Letey, N. Valoras, and J. F. Osborn (1969), published in Agronomy Journal, exploring what this classic research actually found about wetting agents, surfactant phytotoxicity, root growth, root hairs, shoot growth, and the important diffe...

Can low oxygen in the soil stop turfgrass roots from growing deeper? This video examines the science from “Physical Soil Amendments, Soil Compaction, Irrigation, and Wetting Agents in Turfgrass Management III. Effects on Oxygen Diffusion Rate and Root Growth” by J. Letey, W. C. Morgan, S. J. Richards, and N. Valoras (1966), exploring what this classic turfgrass research actually found about soil o...

Can Hydretain reduce irrigation while maintaining healthy turf? We examine the 2026 study by I. Alejandra Sierra Augustinus, J. Bryan Unruh, Kevin Kenworthy, Alex J. Lindsey & Marco Schiavon, “St. Augustinegrass can sustain performance under water and fertilizer restrictions in subtropical environments,” and what the research found about Hydretain, irrigation reduction, and St. Augustinegrass...

Do wetting agents affect turfgrass growth and soil salinity? This video examines the science from “Physical Soil Amendments, Soil Compaction, Irrigation, and Wetting Agents in Turfgrass Management II. Effects on Top Growth, Salinity, and Minerals in the Tissue” by N. Valoras, W. C. Morgan, and J. Letey (1966), exploring what this classic turfgrass research actually found about wetting agents, irri...

Do wetting agents always help water move into soil? We revisit the classic 1962 study The Effect of Wetting Agents on Infiltration by R. E. Pelishek, J. Osborn, and J. Letey, which found that wetting agents improved infiltration in hydrophobic soils but could have little or even adverse effects in soils that were not strongly water repellent. #WettingAgents #Turfgrass #SoilScience #WaterRepellency...

In Part 2 of my Turfgrass Q&A series, I answer more of your YouTube comments and emails on topics including soil testing, heat stress, nitrogen management, and other common turfgrass questions. Every answer is backed by peer-reviewed research to help separate fact from fiction and improve your turf management decisions. #Turfgrass #LawnCare #GolfCourseManagement #SoilScience #Nitrogen #Agronom...

Have questions about urea fertilizer, coated nitrogen, university research, or real-world turf management? In this first Q&A episode, I respond to your YouTube comments and emails using peer-reviewed turfgrass research to separate evidence from opinion and help you make better management decisions. #Turfgrass #LawnCare #GolfCourseManagement #Nitrogen #Urea #Fertilizer #Agronomy #TurfScience #S...

Is it really time to stop using urea fertilizer? In this Tinfoil Turfgrass, I review the claims made in a popular YouTube video and compare them with peer-reviewed turfgrass research to separate evidence from misinformation. Discover what the science actually says about urea, nitrogen fertilizers, volatilization, and best management practices for healthy turf. #Urea #LawnCare #Turfgrass #Nitrogen...

Can water really become "wetter"? In this video, we explore the classic paper Soil Wetting Agents by Robert A. Moore (1959) and explain how wetting agents improve water infiltration, root development, and turfgrass performance. Discover why this pioneering research still influences modern turf management today. Paper: Soil Wetting Agents Author: Robert A. Moore Year: 1959 #Turfgrass #WettingAgents...

Can wetting agents improve water movement in golf course turf? In this video, we explore the classic paper "Turfgrass Improvement with a New Water" by Robert A. Moore (1957) and examine how wetting agents help water penetrate the soil, reduce localized dry spots, and promote healthier turfgrass. Discover why this pioneering research continues to influence modern golf course management and turfgras...

Did your brain make your decision before you became aware of it? In this video, we explore the groundbreaking neuroscience study that found brain activity can predict a person's choice seconds before conscious awareness, and what it means for free will. Paper: Unconscious Determinants of Free Decisions in the Human Brain (2008) Authors: Chun Siong Soon, Marcel Brass, Hans-Jochen Heinze, and John-D...

Did Benjamin Libet's famous 1983 experiment prove that your brain decides before you do? In this episode, we examine Libet, Gleason, Wright, & Pearl (1983), "Time of Conscious Intention to Act in Relation to Onset of Cerebral Activity (Readiness-Potential): The Unconscious Initiation of a Freely Voluntary Act." We'll explain the readiness potential, what the study actually found, common miscon...

In this episode of Turfgrass Epistemology, we examine Stanley Milgram's classic paper, Behavioral Study of Obedience (1963), and explore how authority influences our beliefs and decisions. Why do turf managers, consultants, and consumers often accept claims because a professor, university, or industry expert said them? Learn how the logical fallacy of Appeal to Authority can lead us to substitute...