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User: Ethan Rocklin

Created on: 2025-09-02

Observation Date 2025-09-02

Comment:
Fertilized LTER Main Site treatment T4 all reps starting with the East side of each plot (1, 2, 3, 5, and 6), then the West side of each plot (6, 1, 4, 10, 11, and 5) with Compass Minerals Protassium+ Organic Ag Granular Sulfate of Potash 0-0-50 Plus 17% Sulfur. The target rate in John Deere Dry Rate Controller was 250 lbs per acre. Prairie strips were not fertilized. Application was done at 2.5 mph, B1 gear at 1500 engine RPM, fan speed at 19 lb per cubic inch, JD Dry Rate Controller CFR setting at .0160 and density of protassium+ was 85 lbs/cubic ft. All product settings saved in John Deere rate controller and were not changed from 2024. After several calibration runs it was apparent the these settings were accurate for the 250 lbs/A target.

Areas:
T4

Observation Type:
Fertilizer Application

Activities:

Worker: Ethan Rocklin
Equipment: John Deere 7420b Tractor (14.9 R 46 back tire size)
Equipment: Gandy Orbit-Air (30' boom) • Material: Fertilizer Organic Sulfate of Potash 0-0-50-17S @ 250.0 pound per acre
Worker: Jarrod Rhoades
Worker: Commercial Applicator

Attachments:

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