Show Observation
User: Peter Hudy
Created on: 2012-05-24
Observation Date 2012-05-23
Comment:
Sprayed the LTER Main Site Treatement T7 tilled microplot area only, all replications (reps 6, 5, 1, 3, 4, and 2) for weed control using Roundup PowerMax, 2,4-D LV4, and ammonium sulfate. Principal weeds which were to be controlled were dogbane. Roundup Power Max (EPA Reg. No. 524-549) (Glyphosate: N-(phosphonomethyl) glycine, in the form of its potassium salt, 48.7%) was applied at 1 qt/acre, 2,4-D LV4 (EPA Reg. No. 1381-102) (2-ethylhexyl ester of 2,4-dichlorophenoxyacetic acid 66.2%) was applied at 1 qt/acre, and Ammonium Sulfate (sprayable, CAS #7783-20-2) was applied at 3.4 lbs/acre. Sprayed in two passes (30' each) going south to north finished by a headland pass (10' wide) across north side. Weather conditions: Sunny with air temperature of 74 degrees F. Relative Humidity was 48%. Wind was from the southeast at 5 mph. Time of application was 12:00 p.m. - 2:30 p.m. Equipment Used: JD 5220 tractor traveling 3.8 mph (gear B3, 1700 rpm) with a pull type Top Air Sprayer equipped with a hydraulic centrifugal sprayer pump and a Raven 440 automatic carrier control unit. Turbo TeeJet 11003 nozzles were used, spaced 15 inches apart with a total boom length of 30 feet. 20 psi were used. Water applied at 20 gals/A, (187 L/ha), was used as the carrier.
Areas:
T7_micro-plots
Observation Type:
Herbicide Application
Activities:
Attachments: