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User: Ethan Rocklin

Created on: 2026-06-10

Observation Date 2026-06-10

Comment:
Applied 28% liquid nitrogen fertilizer to GLBRC Switchgrass fertility study according to the following gradient. SWF1: 0 lbs N/A = 0 gal 28%/A SWF2: 25 lbs N/A = 8.4 gal 28%/A SWF3: 50 lbs N/A = 16.7 gal 28%/A SWF4: 75 lbs N/A = 25.3 gal 28%/A SWF5: 100 lbs N/A= 33.7 gal 28%/A SWF6: 125 lbs N/A = 42.1 gal 28%/A SWF7: 150 lbs N/A = 50.5 gal 28%/A SWF8: 175 lbs N/A = 58.9 gal 28%/A All applications done with Chafer stream bars, except for SWF2, which were done with Tee Jet 015 green SJ3 nozzles. Rate listed below is an average of all the treatment rates.

Areas:
Switchgrass_fertility

Observation Type:
Fertilizer Application

Activities:

Worker: Ethan Rocklin
Equipment: John Deere 7420b Tractor (14.9 R 46 back tire size)
Equipment: Fast 3 Point Sprayer (LTER/GLBRC)
Equipment: Chafer Stream Bars • Material: Fertilizer UAN 28% @ 87.0 gallon per acre

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