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Name: Fertilizer Organic Sulfate of Potash 0-0-50-17S

Material Type

fertilizer

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2023-05-24	Fertilizer Application	Fertilized LTER Main Site treatment T4 all reps (R5, R3, R2, R4, R1, R6) with Compass Minerals Protassium+ Organic Ag Standard Sulfate of Potash 0-0-50 Plus 17% Sulfur. The target rate in Raven controller was 200 lbs per acre. Based on amount leftover of product about 230 lbs per acre was applied. The first T4 fertilizer application in decades. Reps 5,3,2 and 4 were applied on 5/24/23. Reps 1 and 6 were applied on 5/25/23. Prairie strips were not fertilized. Application was done at 2 mph, Raven SCS600 metercal set to 201, density of protassium+ was about 100 lbs/cubic ft. Weather at 5:30 pm 5/24/23. Temperature: 64.4°F Wind Speed (5 minute at 3m) : 11.66 mph Wind Direction: North East Relative Humidity: 30.1% Weather Conditions at 11:30 a.m 5/25/23: Temperature: 53.7° F; Wind Speed (5 minute at 3m) : 10.61 mph Wind Direction: East Relative Humidity: 42.4%
2024-04-18	Fertilizer Application	Fertilized LTER Main Site treatment T4 all reps (R5, R3, R2, R4, R1, R6) 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 mph, B1 gear at 1350 engine RPM, fan speed at 15 lb per cubic inch, JD Dry Rate Controller CFR setting at .0160 and density of protassium+ was 85 lbs/cubic ft. Weather at 9:20 a.m 4/18/24. Temperature: 50.1°F Wind Speed (5 minute at 3m) : 7.21 mph Wind Direction: North West Relative Humidity: 71% Weather Conditions at 5:25 p.m 4/18/24: Temperature: 59.3° F; Wind Speed (5 minute at 3m) : 3.04 mph Wind Direction: South East Relative Humidity: 54.2%

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