I’m planning winter credits and want courses that go past theory — field-based insect/disease ID plus sprayer calibration you can use the next day. If you’ve taken one that improved chinch/billbug timing and covered nozzle choice and rates (e.g., flat-fan at 30–40 psi, 1.5–2 gal/1,000 sq ft), name it and why it stuck.
, most CEUs are slide decks — @OP, the Rutgers turf insect IPM day with Koppenhöfer was the one that moved the needle: we ID’d chinch/billbug stages on-site, then calibrated with XR11004 flats at about 35 psi, 2 gal/1,000, and verified with catch-cans. It stuck because timing was tied to degree-days and soap-flush counts; only caveat is I swap to AI flats or bump to 3 gal/1,000 in heavy thatch or wind — handy refresher here: https://www.turffiles.ncsu.edu.
Backing @hazelQ_920, UMass Extension’s Turf IPM day was the one that stuck: we staged billbugs on-site, then live-calibrated with XR flat-fans at about 35 psi using dye and water-sensitive paper to land around 1.7 gallons per thousand at about 3 mph; one day, under $200, and it counted for state CEUs. Only caveat: disease ID was light, so pair it with a deeper pathology session if that’s a priority.
Backing @hazelQ_920, add Purdue’s Turf & Landscape Field Day — we timed a 200‑ft pass, compared XR vs AIXR, and set carrier around 1.6 per 1,000 with dye/catch‑cups; my billbug timing tightened right away. For winter credits, their Turf & Ornamental Update has a hands-on calibration segment and live chinch/billbug ID: https://turf.purdue.edu/events. Small caveat: it’s heavy on sprayer nuts‑and‑bolts, so pair it with a disease block if you want pathology depth.