Show Observation

User: Peter Hudy

Created on: 2012-05-22

Observation Date 2012-05-21

Comment:
Fertilized the LTER Main Site treatment N-rate Study (Nitrogen Fertility Gradient/Irrigation Experiment), selected plots only with lime. Lime was applied at three different rates: 1 ton/A, 2 ton/A, and 2.5 ton/A. All applications were with multiple passes over the plots to reach the correct amount (the gandy applicator has a limitation of a maximum application rate of approximately 800 lbs/A due to product flow through the hoses). Plots to which 1 ton/A was applied were the following: (F1) 309; (F3) 103, 205; (F4) 208; (F5) 306, 401; (F6) 106; (F7) 307, 707; (F8) 303, 607; (F9) 509, 606, 809. Plots to which 2 ton/A was applied were the following: (F6) 209, 308, 402; (F7) 201, 408; (F8) 207, 405, 703; (F9) 109, 206, 301, 409, 701. Plots to which 2.5 ton/A was applied were the following: (F8) 108. Applied with the John Deere 7420a tractor traveling 0.9-1.2 mph (range A1, 1100-1400 rpm) 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 75 lbs/cu ft; metering wheel 1 1/4” diameter (yellow); deflector spacing 22”; meter cal number 175; air pressure was 13-14 p.s.i.; Boom length 15 feet extending from the center of the Gandy to the right only, nozzles 16-24 inches above the ground level. Weather conditions: cloudy, temperatures 60 degrees F.

Areas:
Resource_Gradient-Irrigated Resource_Gradient_Non-Irrigated

Observation Type:
Fertilizer Application

Activities:

Worker: Commercial Applicator

Equipment: John Deere 7420a Tractor

Equipment: Gandy Air Seeder • Material: lime @ 0.0 ton per acre

Attachments: