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User: Peter Hudy

Created on: 2011-06-22

Observation Date 2011-06-22

Comment:
Fertilized LTER Main Site treatment T5 replication 5 only with 27% ammonium nitrate (YaraBela CAN-27 granular). Trees were fertilized with ammonium nitrate at 140 lbs N/A (518 lbs CAN-27/A). Fertilizer was applied in 2 passes using a three-point mounted Gandy Orbit-Air fertilizer applicator with a 6.5' boom length on which were mounted 8 nozzles; however, the nozzles were set to apply the fertilizer over the entire 8' distance between tree rows. Calibration rates were determined based on an 8' boom length. The Gandy was pulled by a John Deere 4400 compact tractor. The Gandy was calibrated to apply 0.784 lbs/min/nozzle when travelling 3.0 mph in drive setting A at maximum velocity with 2800 engine RPMs. For each treatment plot, a 50' unfertilized microplot area was left as the north 50' of the plot. Because of the staggered planting arrangement of the trees, either 10 or 11 trees in each row were in the microplot. Weather conditions: Partly cloudy, temperatures 71-78 degrees F. Wind variable 0-10 mph out of the south. Relative humidity 84%.

Areas:
T5R5

Observation Type:
Fertilizer Application

Activities:

Attachments: