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User: Peter Hudy
Created on: 2012-04-20
Observation Date 2012-04-19
Comment:
Fertilized LTER Main Site treatment T1, all replications (reps. 1, 5, 4, 3, 2 and 6) with monoammonium phosphate (MAP: 11-52-0) at 60 lbs/A product. The north 5 meters of the microplots in the northwest corner of the plots were not fertilized. The 60 lbs/A of MAP provided 6.6 lbs/A of nitrogen and 31.2 lbs/A of PO4. The fertilizer was applied with the JD 7420(a) tractor traveling at approximately 5.6 mph, and a Gandy Orbit-Air fertilizer applicator controlled by a Raven 6000 which monitored the application and automatically adjusted the metering rate for changes in ground speed. For the Gandy/Raven set-up, the following were used: Density 60 lbs/cu ft; metering wheel 1 1/4” diameter (yellow); deflector spacing 22”; meter cal number 204; air pressure was 12-14 p.s.i.; Boom length 30 ft, nozzles 24-30 inches above the ground level. Weather conditions: cloudy to partly sunny, temperatures 61 degrees F, winds calm, 71% relative humidity, application time 2:30-4:00 p.m.
Areas:
T1
Observation Type:
Fertilizer Application
Activities:
Attachments: