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User: Ethan Rocklin

Created on: 2025-07-10

Observation Date 2025-07-08

Comment:
Applied nitrogen (28% UAN) to corn in Lysimeter field "Starter Study". Application done with the FSC 28% applicator on 7/8/25 with varying rates of nitrogen on the "Non-Starter" side of plots. Application done with Clark 28% applicator on 7/8/25 for the varying rates of nitrogen on the "Non-Starter" side of plots. Starter fertilizer was applied to the "No Starter" plots on 6/27/25 at a rate of 18.6 gallon. The FSC applicator was used for this Starter application. This is the final application and brings all plots up to their treatment required nitrogen level. Below are rates applied to the treatments: T1 No Fertilizer T7 Applied 10.1 GPA 28% (30 lbs) T13 Applied Starter at 18.6 GPA T2 No additional fertilizer applied T8 Applied 16.8 GPA 28% (50 lbs) T14 Applied Starter at 18.6 GPA T3 Applied 10.1 GPA 28% (30 lbs) T9 Applied 33.6 GPA 28% (100 lbs) T15 Applied Starter at 18.6 GPA T4 Applied 16.8 GPA 28% (50 lbs) T10 Applied 50.4 GPA 28% (150 lbs) T16 Applied Starter at 18.6 GPA T5 Applied 33.6 GPA 28% (100 lbs) T11 Applied Starter at 18.6 GPA T17 Applied Starter at 18.6 GPA T6 Applied 50.4 GPA 28% (150 lbs) T12 Applied Starter at 18.6 GPA T18 Applied Starter at 18.6 GPA

Areas:
LYSIMETER_FIELD

Observation Type:
Fertilizer Application

Activities:

Worker: Jarrod Rhoades
Equipment: John Deere 7420b Tractor (14.9 R 46 back tire size)
Equipment: Fertilizer Applicator - 28% and/or Liquids (Clark Built) Six Row • Material: Fertilizer UAN 28% @ 16.0 gallon per acre
Worker: Ethan Rocklin
Equipment: John Deere 7420b Tractor (14.9 R 46 back tire size)
Equipment: Fertilizer Applicator - 28% and/or Liquids (LTER Built) Six Row • Material: Fertilizer UAN 28% @ 16.0 gallon per acre

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