Turfgrass Epistemology
autor: Travis Shaddox
Nejnovější epizoda
S4 E60 Can water retention products improve turfgrass quality…
S4 E60 Can water retention products improve turfgrass quality…
O tomto podcastu
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.
Epizody
Nejnovějších 50 z 309 epizod
- S4 E60 Can water retention products improve turfgrass quality without increasing soil moisture? + Comments · 1 h 20 min · Řada 4 Epizoda 309This 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…
- S4 E59 Can fungicides eliminate soil water repellency? + Comments · 1 h 18 min · Řada 4 Epizoda 308This 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…
- S4 E58 Can sand actually become waterproof? · 50 min · Řada 4 Epizoda 307This video examines “Localized Dry Spots as Caused by Hydrophobic Sands on Bentgrass Greens” by Tucker and colleagues (1990), investigating water-repellent sand, organic coatings…
- S4 E57 Do different wetting agents actually perform differently? · 1 h 7 min · Řada 4 Epizoda 306This video examines research comparing Aqueduct, Primer, Cascade, and LESCOFlo for managing localized dry spot and soil water repellency in turfgrass—and the results may…
- S4 E56 Does applying more wetting agent actually improve turfgrass performance? · 55 min · Řada 4 Epizoda 305This 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…
- S4 E55 Do fewer Poa annua seedheads mean more roots? · 1 h 16 min · Řada 4 Epizoda 304This 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…
- S4 E54 Can wetting agents suppress Poa Annua seedheads? · 57 min · Řada 4 Epizoda 303This 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…
- S4 E53 Why do localized dry spots form on golf greens, and why won’t water soak in? · 1 h 11 min · Řada 4 Epizoda 302This 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…
- S4 E52 Can a wetting agent reduce leaf spot disease in Kentucky bluegrass? · 1 h 9 min · Řada 4 Epizoda 301This 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…
- S4 E51 Tinfoil Turfgrass - Can CytoGro + Hydretain Really Save Water? · 1 h 40 min · Řada 4 Epizoda 300Can CytoGro + Hydretain really reduce irrigation water use in turfgrass? In this video, I examine the science behind cytokinins, plant growth regulators, and Hydretain to…
- S4 E50 Tinfoil Turfgrass - Does CarbonPro-G Unlock Nutrients or Add Them? · 2 h 15 min · Řada 4 Epizoda 299Does 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…
- S4 E49 Where Do Wetting Agents Go in Soil? · 57 min · Řada 4 Epizoda 298Where 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…
- S4 E48 Can Surfactants Harm Turfgrass? · 1 h 21 min · Řada 4 Epizoda 297Can 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…
- S4 E47 Wetting Agents, Soil Oxygen, and Roots. · 45 min · Řada 4 Epizoda 296Can 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…
- S4 E46 Does Hydretain Really Reduce Watering by 50% or More? · 1 h 49 min · Řada 4 Epizoda 295Can 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 &…
- S4 E45 Wetting agents, turfgrass growth, and soil salinity + Tinfoil Turfgrass · 1 h 21 min · Řada 4 Epizoda 294Do wetting agents affect turfgrass growth and soil salinity? This video examines the science from “Physical Soil Amendments, Soil Compaction, Irrigation, and Wetting Agents in…
- S4 E44 When Do Wetting Agents Improve Infiltration? · 52 min · Řada 4 Epizoda 293Do 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…
- S4 E43 More Turfgrass Questions Answered: Soil Testing, Heat Stress & Turf Science · 2 h 10 min · Řada 4 Epizoda 292In 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…
- S4 E42 Answering Your Turfgrass Questions + Tinfoil Turfgrass! · 2 h 19 min · Řada 4 Epizoda 291Have 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…
- S4 E41 Tinfoil Turfgrass - Urea is a Problem...and Other Nonsense. · 1 h 44 min · Řada 4 Epizoda 290Is 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…
- S4 E40 Wetter Water? · 1 h 4 min · Řada 4 Epizoda 289Can 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…
- S4 E39 When Were Wetting Agents First Used for Turfgrasses? · 1 h 9 min · Řada 4 Epizoda 288Can 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…
- S4 E38 Did Your Brain Decide Before You Did? · 59 min · Řada 4 Epizoda 287Did 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…
- S4 E37 Your Brain Decided Before You Knew · 54 min · Řada 4 Epizoda 286Did 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…
- S4 E36 Appeal to Authority: Why Smart People Make Bad Decisions · 1 h 15 min · Řada 4 Epizoda 285In 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…
- S4 E35 Why We Believe Things That Aren't True - Part 1 · 60 min · Řada 4 Epizoda 284In this episode of Turfgrass Epistemology, we examine one of the most influential scientific papers ever published: Judgment Under Uncertainty: Heuristics and Biases by Amos…
- S4 E34 Why Smart People Keep Making This Mistake · 1 h 17 min · Řada 4 Epizoda 283Why do smart people search for evidence that confirms their beliefs instead of trying to prove themselves wrong? In this video, we explore Peter Wason's famous 2-4-6 experiment…
- S4 E33 What Astrology, Personality Tests, and Soil Tests Have in Common · 54 min · Řada 4 Epizoda 282Why do generic soil reports feel surprisingly accurate? In this video, we explore the Forer Effect and discuss how vague, universally true statements can create the illusion of…
- S4 E32 Bandwagon Appeal and Social Pressure · 1 h 1 min · Řada 4 Epizoda 281Why do people conform to group pressure even when they know the group is wrong? In this video, we explore Solomon Asch's landmark conformity study, Opinions and Social Pressure…
- S4 E31 Dr. Jada Powlen - Summer Nitrogen on Tall Fescue? · 59 min · Řada 4 Epizoda 280Does summer nitrogen really make brown patch worse in tall fescue? In this interview, Dr. Jada Powlen discusses her 2024 study and explains why cultivar selection may be more…
- S4 E30 Does Manganese Influence Take-All Disease? · 1 h 11 min · Řada 4 Epizoda 279In this video, I break down the classic study “Optimizing Manganese Fertilization for the Suppression of Take-All Patch Disease on Creeping Bentgrass.” We examine whether…
- S4 E29 Can Silicon Reduce Turfgrass Disease? · 1 h 2 min · Řada 4 Epizoda 278In this video, I break down the study “Evaluation of Calcium Silicate for Brown Patch and Dollar Spot Suppression on Turfgrasses.” We examine whether calcium silicate (Si…
- S4 E28 Does Biological Disease Control Work on Turfgrasses? · 59 min · Řada 4 Epizoda 277In this video, I break down the research on biological and oil-based fungicides for dollar spot control in turfgrass. We examine whether products like biological fungicides…
- S4 E27 Tinfoil Turfgrass - 35 Years of Experience. 35 Years of Bullsh*t. · 1 h 36 min · Řada 4 Epizoda 276In this video, I break down a lawn care discussion on nitrogen fertilizers and turfgrass performance, separating what’s scientifically sound from what may be oversimplified. We…
- S4 E26 Tinfoil Turfgrass - How to With Steve and BS Booster! · 1 h 12 min · Epizoda 275In this video, I break down the “DirtBooster Organic Lawn and Garden Treatment” video from How to With Doc and take a closer look at the claims around soil microbes, biochar…
- S4 E25 Tinfoil Turfgrass - More soil testing nonsense from Steve. · 1 h 40 min · Řada 4 Epizoda 274In this video, I break down a popular lawn care video on soil testing, pH, and nutrient recommendations and separate what’s useful from what may be misleading. We take a closer…
- S4 E24 Tinfoil Turfgrass - He Thinks Aerification is the Most Important Thing for Your Lawn. 🤦♂️ · 1 h 17 min · Řada 4 Epizoda 273In this video, I break down a lawn care video making the rounds online and separate what sounds right from what’s actually supported by turfgrass science. We take a closer look…
- S4 E23 Comments and Emails - Why do pet spots last so long? · 1 h 38 min · Řada 4 Epizoda 272In this video, I respond to comments and emails and answer a common question: Why do dog urine (pet) spots last so long in turfgrass? We break down the science behind nitrogen…
- S4 E22 Elevated Lawnscapes, Turf Therapy, and Polo Fields · 1 h 24 min · Řada 4 Epizoda 271In this episode, I sit down with Rob from Turf Therapy and Cam from Elevated Lawnscapes to talk all things lawn care, content creation, and turfgrass management. We discuss their…
- S4 E21 Calcium vs. Limestone on Dollar Spot. · 58 min · Řada 4 Epizoda 270In this video, I break down the study “Influence of Calcium and Nitrogen Fertilizer on Creeping Bentgrass Infected with Dollar Spot.” We examine whether it is calcium or lime…
- S4 E20 Can Milorganite, Sea Kelp, or Manure Reduce Dollar Spot + Tinfoil Turfgrass! · 1 h 48 min · Řada 4 Epizoda 269In this video, I break down the classic study “Microbial Populations and Suppression of Dollar Spot Disease in Creeping Bentgrass with Inorganic and Organic Amendments.” We take…
- S4 E19 Dr. Scott McElroy - Herbicide and Insecticide Interations · 1 h 1 min · Řada 4 Epizoda 268In this episode, I interview Dr. Scott McElroy (Auburn University) about weed control in turfgrass, including best practices for herbicide timing, resistance management, and how…
- S4 E18 Tinfoil Turfgrass - Floratine 'Master Class' of BS · 1 h 36 min · Řada 4 Epizoda 267In this video, I break down a Floratine Masterclass where Tim Cartwright discusses a common claim about calcium availability in soils. I examine the argument, the science behind…
- S4 E17 Organic Fertilizers and Turfgrass Disease · 1 h 7 min · Řada 4 Epizoda 266In this video, I break down the research article “Soil Amendments and Fertilizer Source Effects on Creeping Bentgrass Establishment, Soil Microbial Activity, Thatch, and…
- S4 E16 Organic Fertilizer and Dollar Spot. · 1 h 3 min · Řada 4 Epizoda 265In this video, I review the classic turfgrass study “Dollar Spot Severity, Tissue Nitrogen, and Soil Microbial Activity in Bentgrass as Influenced by Nitrogen Source.” We take a…
- S4 E15 Do Spray Nozzles and Volume Influence Dollar Spot? · 1 h 8 min · Epizoda 264In this video, I review the research article “Strategies for Increasing Ferrous Sulfate Efficacy Against Dollar Spot of Creeping Bentgrass.” We examine how ferrous sulfate…
- S4 E14 Tinfoil Turfgrass: The BS Behind Amino Acids for Turfgrass. · 1 h 15 min · Řada 4 Epizoda 263In this episode of Turfgrass Epistemology, I critically examine the article “Exploratory Study on the Foliar Incorporation and Stability of Isotopically Labeled Amino Acids…
- S4 E13 Does Dew Removal Reduce Dollar Spot? · 1 h 3 min · Řada 4 Epizoda 262In this episode of Turfgrass Epistemology, I break down the peer-reviewed Crop Science article “Mowing Strategies and Dew Removal to Minimize Dollar Spot on Creeping Bentgrass”…
- S4 E12 Common Diseases on Cool-Season Lawns · 1 h 1 min · Řada 4 Epizoda 261In this episode of Turfgrass Epistemology, I discuss the Purdue Extension publication “Common Diseases on Cool-Season Lawns” (BP-218-W), a practical guide to identifying and…
- S4 E11 Does Blending Bentgrass Cultivars Reduce Dollar Spot? · 51 min · Řada 4 Epizoda 260In this episode of Turfgrass Epistemology, I discuss the peer-reviewed article “Dollar Spot Resistance among Blends of Creeping Bentgrass Cultivars” by Abernathy et al. (2001)…
