Show Observation
User: Peter Hudy
Created on: 2010-05-20
Observation Date 2010-05-20
Comment:
Fertilized GLBRC Main Site Switchgrass Fertility Study (n-rate), all treatments and all replications. Fertilizer applied as 28-0-0 which supplied 28% nitrogen in the form of Urea-Ammonium Nitrate (UAN). Applied with a Top-Air Sprayer with a 15' boom length. A single pass of a boom type sprayer was used to broadcast spray and apply the correct amount of fertilizer. The amounts of nitrogen applied were as follows: SWF1 (108, 201, 307, 408) 0 lbs/A; SWF2 (104, 206, 308, 407) 25 lbs N/A (8.4 gal/A); SWF3 (102, 202, 302, 406) 50 lbs N/A (16.7 gal/A); SWF4 (105, 208, 305, 405) 75 lbs N/A (25.1 gal/A); SWF5 (101, 205, 304, 404) 100 lbs N/A (33.5 gal/A); SWF6 (107, 207, 301, 403) 125 lbs N/A (41.8 gal/A); SWF7 (106, 204, 306, 402) 150 lbs N/A (50.2 gal/A); SWF8 (103, 203, 303, 401) 175 lbs N/A (58.6 gal/A). Time of application was between 3:00 and 4:30 p.m. Temperature at start was 79F, 43% relative humidity, skies were clear and sunny. Wind was between 0-3 mph SSE. Equipment used: John Deere 5220 tractor pulling a Top-Air pull type sprayer equipped with a hydraulic centrifugal sprayer pump. The sprayer was controlled by a Raven 440 automatic carrier control unit. Nozzles were spaced 15 inches apart along the 15 foot boom length extending from the center of the drive-line off to the right side of the sprayer. Different pressures, rpm, and speeds were used for the application so that the pressure range at the sprayer varied between 20-35 psi. No passes were made through the SWF1 treatment area. TeeJet 8001 nozzles were used for the SWF2 and SWF3 level. TurboTeeJet 11003 nozzles were used for the SWF4, SWF5 and SWF6 levels. TurboTeeJet 11005 nozzles were used for the SWF7 and SWF8 levels.
Areas:
Switchgrass_fertility
Observation Type:
Fertilizer Application
Activities:
Attachments: