4/19/2023 – Using info developed and the experience from past years sprayed the lawn and turn rows in the garden with Fertilome’s Weed Free Zone (WFZ). WFZ kills/controls Florida Betony, Spiderwort, and Creeping Charlie which are major issues this year…as usual.
From the post on 4/18/2021 for tests of Fergie’s speeds.
| Gear at 540 RPM | Secs for 200′ | FPS | MPH |
|---|---|---|---|
| 1H | 37 | 5.45 | 3.7 |
| 2H | 27 | 7.4 | 5.05 |
| 3H Too Fast | 18.2 | 11 | 7.5 |
| 4L | 61 | 3.27 | 2.23 |
Today’s Plan
- Apply the upper end of the range at 1.25 oz/KSF for WFZ for 1,000 SF. The Label says the range is 0.75 – 1.5 fl. oz. per KSF.
- For Fergie at 540 RPM in Gear 1H she goes 3.7 MPH.
- From Ag-Sprayer chart – 4 MPH at 40 psi puts out 0.23 Gallons/1000 SF. Say, 0.25 at 3.7 MPH. That is more water than the minimum.
- Areas to spray – 15,500+3,000+5,000+4,000+4,600+5,000(misc) = 37,100 SF. See the layout below.
- The Mix
- Water amount required will be 0.25 gal x 37.1 KSF = 9.275 gallons
- Nonionic Surfactant at 1 TBSP/Gallon = 9 Tbsp = ½ Cup + 1 TBSP
- WFZ at 1.25 oz/KSF for 37.1 KSF = 46 oz.
Application
Followed the above Plan and had less than a gallon left in the bottom of the tank. The 5,000 SF miscellaneous, which also provided a contingency, combined with the tables for the sprayer and the data used for Fergie, provided a good quantity for the area.
