In this video, I examine the research by Cain et al. (2022) that explores how varying irrigation schedules affect the encroachment of annual bluegrass (Poa annua) into perennial ryegrass turf systems in western Oregon. The study reveals that watering once per week significantly reduces annual bluegrass encroachment compared to irrigating four times a week, and that replacing irrigation volumes based on reference evapotranspiration (ETref) had no meaningful impact on that outcome

Throughout the video, I walk viewers through the experimental approach, highlight the implications for turfgrass managers aiming to suppress undesirable bluegrass without altering evapotranspiration-based irrigation schedules, and reflect on how this insight might inform more water-efficient lawn or turf maintenance strategies.

https://onlinelibrary.wiley.com/doi/full/10.1002/its2.70

📩 Have a comment or question of your own? Drop it below or email me.

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

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 consulting
Calendly.com/TravisShaddox

Twitter
Twitter.com/TravisShaddox

Email
[email protected]

Turfgrass Programs and Extension Service Information:
https://www.usna.usda.gov/assets/images/as_pdf_image/LandGrantColleges.pdf

Diagnostic Criteria for Turfgrass Bullshit Disorder:https://drive.google.com/file/d/1Y_GeVPQ237pzm0ImTP4eVij6I9D0PHPn/view