Show Observation
User: Peter Hudy
Created on: 2012-05-24
Observation Date 2012-05-22
Comment:
Sprayed the LTER Main Site Nitrogen rate study (N-Rate: Fertility Gradient, both irrigated and non-irrigated) field area for burndown weed control using Roundup PowerMax and ammonium sulfate. 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 and Ammonium Sulfate (sprayable, CAS #7783-20-2) was applied at 3.4 lbs/acre. Field was sprayed north-south with headland passes west-east on both the north and south sides. Weather conditions: mostly sunny with air temperature of 71 degrees F. Relative Humidity was 58%. Wind was from the northeast at 5 mph. Time of application was 5:15 p.m. - 7:00 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:
Resource_Gradient-Irrigated Resource_Gradient_Non-Irrigated
Observation Type:
Mechanical Weed Control
Activities:
Attachments: