Show Observation
User: Ethan Rocklin
Created on: 2025-04-30
Observation Date 2025-04-30
Comment:
Fertilized LTER Resource Gradient (N-Rate) Study, Irrigated and Rainfed winter wheat plots as well as the T8nt winter wheat plots with 28%.
Fertilizer applications were with 28-0-0 which supplied 28% nitrogen in the form of Urea-Ammonium Nitrate (UAN).
T8nt plots fertilized at 18 gallons/A to match the T1 and T2 treatments, providing 54 lbs of nitrogen.
N-Rate treatments F1, F2 had no additional nitrogen applied. Treatment F1 is the no nitrogen treatment and treatment F2 already had the nitrogen applied via an ammonium sulfate application earlier in the spring. The previous application provided 20 lbs of nitrogen and this application provides the rest.
F3 (103, 205, 302, 407, 503, 605, 702, 807) 20 lbs N/A (6.7 gal/A);
F4 (104, 208, 305, 403, 504, 608, 705, 803) 40 lbs N/A (13.4 gal/A);
F5 (105, 204, 306, 401, 505, 604, 706, 801) 60 lbs N/A (20.1 gal/A);
F6 (106, 209, 308, 402, 506, 609, 708, 802) 80 lbs N/A (26.7 gal/A);
F7 (107, 201, 307, 408, 507, 601, 707, 808) 100 lbs N/A (33.6 gal/A);
F8 (108, 207, 303, 405, 508, 607, 703, 805) 120 lbs N/A (40.3 .5 gal/A);
F9 (109, 206, 301, 409, 509, 606, 701, 809) 140 lbs N/A (47.0 gal/A).
Application was done with JD 7420b tractor and Fast 3 point sprayer with 45' boom. The boom was folded to 30' and only a 15' section was used for the application. Nozzles used were Chafer stream bars and Teejet 015 green SJ3 fertilizer nozzles. The Teejet nozzles were used for the F3 and F4 treatments. The Chafer stream bars were used on orifice setting #1 except for F9 which had to be increased to setting #2.
Weather at 9:15 am;
Temperature: 45.4°F
Wind Speed: 7.95 mph
Wind Direction: East
RH: 66.0%
Weather at 3:45 pm;
Temperature: 64.5°F
Wind Speed: 1.72 mph
Wind Direction: North East
RH: 33.5%
Areas:
12 Resource_Gradient-Irrigated Resource_Gradient_Non-Irrigated T8nt
Observation Type:
Fertilizer Application
Activities:
Attachments: