Laurence Day, Jessica Rall — Delaware County SWCD Susan McIntyre — Delaware County DPW Charles...
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Transcript of Laurence Day, Jessica Rall — Delaware County SWCD Susan McIntyre — Delaware County DPW Charles...
![Page 1: Laurence Day, Jessica Rall — Delaware County SWCD Susan McIntyre — Delaware County DPW Charles Terrance — SUNY Delhi.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dba5503460f94aab773/html5/thumbnails/1.jpg)
Japanese knotweed composting feasibility
study, Delaware County, NY
Laurence Day, Jessica Rall — Delaware County SWCDSusan McIntyre — Delaware County DPWCharles Terrance — SUNY Delhi
![Page 2: Laurence Day, Jessica Rall — Delaware County SWCD Susan McIntyre — Delaware County DPW Charles Terrance — SUNY Delhi.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dba5503460f94aab773/html5/thumbnails/2.jpg)
Managing Invasive Species(e.g. Polygonum cuspidatum)
• We need a variety of Disposal Options
• Effect of climate change on
invasives = ?
![Page 3: Laurence Day, Jessica Rall — Delaware County SWCD Susan McIntyre — Delaware County DPW Charles Terrance — SUNY Delhi.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dba5503460f94aab773/html5/thumbnails/3.jpg)
[photo of knotweed at stream site]
Stream Rehab & Realignments
Problem: Invasives at Stream Rehab Sites
![Page 4: Laurence Day, Jessica Rall — Delaware County SWCD Susan McIntyre — Delaware County DPW Charles Terrance — SUNY Delhi.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dba5503460f94aab773/html5/thumbnails/4.jpg)
Drying extricated plants for burning, during a wet summer…
![Page 5: Laurence Day, Jessica Rall — Delaware County SWCD Susan McIntyre — Delaware County DPW Charles Terrance — SUNY Delhi.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dba5503460f94aab773/html5/thumbnails/5.jpg)
Delaware County Solid Waste Composting Facility, Walton
Biosolids composting requires sustainedtemperatures ≥55° C for 3 consecutive days.
Why not compost removed knotweed?
Might this compromise weed-free status of the county’s compost?
![Page 6: Laurence Day, Jessica Rall — Delaware County SWCD Susan McIntyre — Delaware County DPW Charles Terrance — SUNY Delhi.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dba5503460f94aab773/html5/thumbnails/6.jpg)
“Sentinel Chamber”
(Compost)
LIVE
![Page 7: Laurence Day, Jessica Rall — Delaware County SWCD Susan McIntyre — Delaware County DPW Charles Terrance — SUNY Delhi.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dba5503460f94aab773/html5/thumbnails/7.jpg)
Knotweed sample collection site
![Page 8: Laurence Day, Jessica Rall — Delaware County SWCD Susan McIntyre — Delaware County DPW Charles Terrance — SUNY Delhi.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dba5503460f94aab773/html5/thumbnails/8.jpg)
30 Samples each of 4 Tissue Types
![Page 9: Laurence Day, Jessica Rall — Delaware County SWCD Susan McIntyre — Delaware County DPW Charles Terrance — SUNY Delhi.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dba5503460f94aab773/html5/thumbnails/9.jpg)
Wrapped in Nylon Netting “Wontons”
![Page 10: Laurence Day, Jessica Rall — Delaware County SWCD Susan McIntyre — Delaware County DPW Charles Terrance — SUNY Delhi.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dba5503460f94aab773/html5/thumbnails/10.jpg)
Compost+Wanton+Compost+…
![Page 11: Laurence Day, Jessica Rall — Delaware County SWCD Susan McIntyre — Delaware County DPW Charles Terrance — SUNY Delhi.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dba5503460f94aab773/html5/thumbnails/11.jpg)
Filled “Knotweed Sentinel”
![Page 12: Laurence Day, Jessica Rall — Delaware County SWCD Susan McIntyre — Delaware County DPW Charles Terrance — SUNY Delhi.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dba5503460f94aab773/html5/thumbnails/12.jpg)
1. Three sentinels buried in compost for 3 days.
2. Six sentinels buried in compost for 6 days.
3. Moist heat only, 52° - 55° C for 3 days.
4. ‘Equipment blank’ placed samples in wontons & sentinels, then into growth chamber for 6 days.
5. Control Group planted directly into growth chamber at SUNY Delhi.
Four Treatment Groups + Control
![Page 13: Laurence Day, Jessica Rall — Delaware County SWCD Susan McIntyre — Delaware County DPW Charles Terrance — SUNY Delhi.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dba5503460f94aab773/html5/thumbnails/13.jpg)
Nine Sentinels Buried in Compost Two Groups: 3-days or 6-days
55° - 63° C, mean=61.3° C (142° F)
![Page 14: Laurence Day, Jessica Rall — Delaware County SWCD Susan McIntyre — Delaware County DPW Charles Terrance — SUNY Delhi.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dba5503460f94aab773/html5/thumbnails/14.jpg)
Moist Heat Treatment
52° - 55° C for3 consecutive days
![Page 15: Laurence Day, Jessica Rall — Delaware County SWCD Susan McIntyre — Delaware County DPW Charles Terrance — SUNY Delhi.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dba5503460f94aab773/html5/thumbnails/15.jpg)
Inspection and Potting
![Page 16: Laurence Day, Jessica Rall — Delaware County SWCD Susan McIntyre — Delaware County DPW Charles Terrance — SUNY Delhi.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dba5503460f94aab773/html5/thumbnails/16.jpg)
Growth Chamber, Summer Conditions27° C “days”(lights on)
19 ° C “nights”(lights off)
![Page 17: Laurence Day, Jessica Rall — Delaware County SWCD Susan McIntyre — Delaware County DPW Charles Terrance — SUNY Delhi.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dba5503460f94aab773/html5/thumbnails/17.jpg)
100% GROWTH vs. 0% GROWTH
CONTROL GROUP
COMPOST-BURIED GROUP
![Page 18: Laurence Day, Jessica Rall — Delaware County SWCD Susan McIntyre — Delaware County DPW Charles Terrance — SUNY Delhi.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dba5503460f94aab773/html5/thumbnails/18.jpg)
Both composting (≥3 d at >55° C) and moist heat (≥3 d at 52°-55° C) effectively killed all growth of roots and crowns (P<.01).
Root and Crown samples much more likely to sprout and grow than leaf or stem samples.
Sentinels performed well, although heat softened plastics; careful removal needed.
RESULTS
![Page 19: Laurence Day, Jessica Rall — Delaware County SWCD Susan McIntyre — Delaware County DPW Charles Terrance — SUNY Delhi.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dba5503460f94aab773/html5/thumbnails/19.jpg)
Temperatures adequate to safely compost biosolids are also appear effective on Japanese knotweed vegetation.
It appears feasible to compost knotweed at the Delaware County SWM facility, not compromising “weed-free” status of compost.
Simple, inexpensive “Sentinels” proved useful to safely assess composting feasibility for invasives.
Conclusions
![Page 20: Laurence Day, Jessica Rall — Delaware County SWCD Susan McIntyre — Delaware County DPW Charles Terrance — SUNY Delhi.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dba5503460f94aab773/html5/thumbnails/20.jpg)
NY Biosolids Composting Locations
(26 Locations in 19 Counties)
![Page 21: Laurence Day, Jessica Rall — Delaware County SWCD Susan McIntyre — Delaware County DPW Charles Terrance — SUNY Delhi.](https://reader036.fdocuments.us/reader036/viewer/2022062516/56649dba5503460f94aab773/html5/thumbnails/21.jpg)
Epilogue
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