Turfgrass Epistemology

53:52

S4 E37 Your Brain Decided Before You Knew

Turfgrass Epistemology ·

2026/07/14

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 misconceptions, and what it does—and does not—tell us about free will, consciousness, and human

en

75:00

S4 E36 Appeal to Authority: Why Smart People Make Bad...

Turfgrass Epistemology ·

2026/07/09

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 credentials for evidence—and why scientific claims should be evaluated by data, not status. Paper

en

59:41

S4 E35 Why We Believe Things That Aren't True - Part 1

Turfgrass Epistemology ·

2026/07/08

In this episode of Turfgrass Epistemology, we examine one of the most influential scientific papers ever published: Judgment Under Uncertainty: Heuristics and Biases by Amos Tversky and Daniel Kahneman (1974). This landmark article introduced the concepts of representativeness, availability heuristics, and anchoring—mental shortcuts that help us make decisions but can also lead to systematic errors in judgment. These cognitive biases help explain why anecdotes, testimonials, and memorable success

en

77:24

S4 E34 Why Smart People Keep Making This Mistake

Turfgrass Epistemology ·

2026/07/02

Why 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 and the origins of confirmation bias. Paper: On the Failure to Eliminate Hypotheses in a Conceptual Task (1960) Author: P. C. Wason #ConfirmationBias #CriticalThinking #Psychology #DecisionMaking #ScientificThinking #Wason246 #BehavioralScience 📌 https://www.gofundme.com/f/TurfgrassEpistemology Thank you for being part of

en

53:34

S4 E33 What Astrology, Personality Tests, and Soil...

Turfgrass Epistemology ·

2026/06/30

Why 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 personalized insight—whether in personality tests, astrology, or soil analysis. Paper: The Fallacy of Personal Validation: A Classroom Demonstration of Gullibility (1949) Author: Bertram R. Forer #ForerEffect #BarnumEffect #Psychology #CriticalThinking #SoilScience #Turfgrass #ScienceCommunication Become a member of Turfgrass

en

61:23

S4 E32 Bandwagon Appeal and Social Pressure

Turfgrass Epistemology ·

2026/06/25

Why 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 (1955), and reveal what his famous experiments teach us about social influence, peer pressure, independent thinking, and human psychology. Paper: Opinions and Social Pressure (1955) Author: Solomon E. Asch #Psychology #Conformity #AschExperiment #SocialPsychology #PeerPressure #BehavioralScience 📌

en

58:59

S4 E31 Dr. Jada Powlen - Summer Nitrogen on Tall Fescue?

Turfgrass Epistemology ·

2026/06/23

Does 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 important than nitrogen rate for managing brown patch disease. Paper: Brown patch severity of five tall fescue cultivars as influenced by summer nitrogen rates (2024) Authors: Jada S. Powlen, James P. Kerns, Michael A. Fidanza, and Cale A. Bigelow #BrownPatch #TallFescue #Turfgrass #Nitrogen #LawnCare #TurfScience

en

71:39

S4 E30 Does Manganese Influence Take-All Disease?

Turfgrass Epistemology ·

2026/05/28

In 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 manganese applications can suppress take-all patch, how application timing influences disease control, and why soil chemistry matters.The results showed that manganese fertilization significantly reduced take-all patch severity, especially when soil manganese availability was low. If you're interested in take-all patch management,

en

62:01

S4 E29 Can Silicon Reduce Turfgrass Disease?

Turfgrass Epistemology ·

2026/05/07

In 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 fertilizers) actually suppress turfgrass diseases like brown patch and dollar spot.The results show that calcium silicate did not reduce dollar spot and, in some cases, actually increased brown patch severity, likely due to nutrient imbalances rather than any true disease suppression effect. If you're interested in silicon

en

59:23

S4 E28 Does Biological Disease Control Work on...

Turfgrass Epistemology ·

2026/05/05

In 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, mineral oils, and plant-based treatments actually work compared to traditional chemistry.The results show that most biological products failed to provide consistent, season-long dollar spot control, while some oil-based products offered limited suppression under lower disease pressure. If you're interested in dollar spot

en

96:39

S4 E27 Tinfoil Turfgrass - 35 Years of Experience. 35...

Turfgrass Epistemology ·

2026/04/30

In 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 take a closer look at how nitrogen source, timing, and application strategy actually influence turfgrass growth—and whether the claims being made hold up under turfgrass science and soil fertility principles. If you're trying to better understand lawn fertilizers, nitrogen management, and turfgrass health, this video will

en

72:44

S4 E26 Tinfoil Turfgrass - How to With Steve and BS...

Turfgrass Epistemology ·

2026/04/28

In 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, humic substances, and “super compost.”The product is promoted as a way to rapidly build soil biology using ingredients like biochar, molasses, and microbial additives, but does the science support the idea that this translates into better turfgrass performance? We evaluate the logic, the mechanisms being implied, and whether

en

100:54

S4 E25 Tinfoil Turfgrass - More soil testing nonsense...

Turfgrass Epistemology ·

2026/04/23

In 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 look at how soil test results are interpreted, whether the recommendations actually make sense, and how to approach fertility decisions using evidence-based turfgrass science. If you're trying to better understand soil tests, lawn care recommendations, pH adjustment, and fertilizer decisions, this discussion will help you

en

77:59

S4 E24 Tinfoil Turfgrass - He Thinks Aerification is...

Turfgrass Epistemology ·

2026/04/21

In 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 at the claims, the reasoning behind them, and whether they hold up when you apply basic principles of soil science and plant physiology. If you're trying to cut through the noise in lawn care advice, turfgrass management, and fertilizer recommendations, this episode will help you think more critically about what you’re

en

98:14

S4 E23 Comments and Emails - Why do pet spots last so...

Turfgrass Epistemology ·

2026/04/20

In 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 burn, salt injury, and recovery limitations in lawns. If you’ve ever struggled with dog spots, lawn damage, or uneven turf recovery, this episode will help you understand what’s really happening—and what actually works. #turfgrass #lawncare #dogspots #soilscience #fertilizer #lawntips #turfgrassepistemology 📌

en

84:21

S4 E22 Elevated Lawnscapes, Turf Therapy, and Polo...

Turfgrass Epistemology ·

2026/04/02

In 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 approach to building great lawns, lessons learned on YouTube, and how they balance real-world lawn care with online advice.This is a great conversation for anyone interested in DIY lawn care, turfgrass tips, and the growing lawn care YouTube community. #turfgrass #lawncare #lawnyoutube #turftherapy #elevatedlawnscapes

en

58:09

S4 E21 Calcium vs. Limestone on Dollar Spot.

Turfgrass Epistemology ·

2026/03/31

In 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 that actually suppresses dollar spot, how it compares to nitrogen, and what happens when the two are applied together. The results show that both calcium and nitrogen reduced disease individually, but combining them was less effective due to antagonism, with calcium also improving root growth and stress tolerance rather than

en

108:13

S4 E20 Can Milorganite, Sea Kelp, or Manure Reduce...

Turfgrass Epistemology ·

2026/03/26

In 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 a close look at whether organic fertilizers actually suppress dollar spot and how they influence microbial populations in turfgrass systems.The results show that while some organic amendments increased microbial activity, dollar spot suppression was inconsistent and often less effective than fungicides, with nitrogen and

en

61:09

S4 E19 Dr. Scott McElroy - Herbicide and Insecticide...

Turfgrass Epistemology ·

2026/03/24

In this episode, I interview Dr. Scott McElroy (Auburn University) about weed control in turfgrass, including best practices for herbicide timing, resistance management, and how herbicides interact with insecticides. We also discuss common mistakes, application strategies, and where to find reliable, evidence-based recommendations. If you manage turf, this conversation will help you improve your weed identification, herbicide programs, and integrated pest management (IPM) decisions. #turfgrass

en

96:14

S4 E18 Tinfoil Turfgrass - Floratine 'Master Class'...

Turfgrass Epistemology ·

2026/03/19

In 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 calcium in turfgrass soils, and whether the explanation actually aligns with what we know from soil chemistry and turfgrass research.If you manage turfgrass or are interested in soil testing, calcium availability, base saturation, and turfgrass fertility myths, this discussion will help you think critically about the claims

en

All Episodes

Similar Podcasts

Daily Facts

Amalia Dupray and Montgomery Jones.

Les dents et dodo

BFMTV

The Clinical Problem Solvers

The Clinical Problem Solvers

» Divine Intervention Podcasts

Divine-Favour Anene

AASR Live

The Alliance Against Seclusion and...