Figure 1.

Figure 2.

Comparison of costs for Scenario 1 ‘tillage + dazomet’ and Scenario 2 ‘no-till + glyphosate’ in the preparation of the site for wildflower plot using plugs_
| Scenario 1 | Scenario 2 | |
|---|---|---|
| Input | Till + dazomet | No-till + glyphosate |
| Labour | $311.52 | $53.41 |
| Labour overhead | $93.45 | $16.02 |
| Equipment | $82181.23 | $91.59 |
| Herbicide | $148.98 | $17.11 |
| Total cost | $82735.18 | $178.13 |
Equipment needed for tillage and dazomet treatment and its listed price_
| Manufacturer | Model | Price | Source |
|---|---|---|---|
| Toro | Dingo TX-1000 Wide Track Vertical Lift, Model #22328 | $32500 | www.machinerytrader.com |
| Toro | Trencher Attachment | $6300 | Keystone Outdoor Power Equipment |
| Kesmac, Inc. | Brouwer BTR-30 Roller | $9553.78 | Site One Landscape Supply |
| AcuRite | Magnifying 5″ Rain Gauge (need two) | $3.98 each | Home Depot |
| Scotts | Whirl Hand Powered Spreader | $13.49 | Home Depot |
| John Deere | 4600 Tractor | $25100 | www.tractordata.com |
| Land Pride | RTA3576 Tiller Attachment | $8500 | www.marketbook.ca |
| HDX | 6 mil clear plastic sheeting (need two) | $103 each | Home Depot |
| Total cost | - | $82181.23 | - |
Equipment and herbicide costs for no-till and glyphosate treatment (assuming all equipment was purchased as new)_
| Manufacturer | Model/Product | Retail price | Quantity used | Total cost |
|---|---|---|---|---|
| Lesco | Backpack sprayer, Product #61840 | $91.594 | 1 | $91.59 |
| Southern Agricultural Insecticides | Ranger Pro Glyphosate Grass & Weed Herbicide Concentrate, 2.5 gal., active ingredient glyphosate 41% | $96.495 | 56.75 ounces | $17.11 |
List of species used in the study and total cost of plugs planted_
| Species | Price per plug September 2020, in $ | Total cost, per 48 plugs in $ |
|---|---|---|
| Agastache foeniculum | 1.38 | 66.24 |
| Allium cernuum | 1.43 | 68.64 |
| Anemone virginiana | 1.70 | 81.60 |
| Asclepias tuberosa | 1.54 | 73.92 |
| Boltonia asteroides | 0.91 | 43.68 |
| Eryngium yuccifolium | 1.38 | 66.24 |
| Helenium autumnale | 1.38 | 66.24 |
| Penthorum sedoides | 1.65 | 79.20 |
| Rudbeckia fulgida | 1.43 | 68.64 |
| Salvia lyrata | 0.97 | 46.56 |
| Sisyrinchium albidum | 2.00 | 96.00 |
| Symphyotrichum laeve | 1.35 | 64.80 |
| Symphyotrichum pilosum | 1.25 | 60.00 |
| Vernonia angustifolia | 1.76 | 84.48 |
| Zizia aptera | 1.53 | 73.44 |
| Total cost | - | 1039.68 |