Show Observation

User: Joe Simmons

Created on: 2007-06-14

Observation Date 2003-06-06

Comment:
Sprayed the Nitrogen Rate Studies (N-rate) both the irrigated and non-irrigated, in the LTER, preemergence to control annual grass and broadleaves weeds.Dual II Magnum (s-metolachlor (+ safener)) was applied at 1.33 pts/A (1.56 L/ha), Atrazine 4L was applied at 1 lbs/A (1.56 L/ha), and Callisto (mesotrione) was applied at 6 oz/A (0.4 L/ha). A total of 3 qt of Dual II Magnum, 4 qts of Atrazine, and 24 oz of Callisto were applied on the N-rate study area. Weather Conditions: Sunny with air temperature was 68 degrees F. Wind was out of the southwest at 0-5 mph averaging 2 mph. Time of application was between 3:30 p.m. and 5:00 p.m. Equipment Used: JD 5220 tractor traveling 5.5 mph (gear C1, 1700 rpm's) 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. 30 psi was used. Water applied at 20 gals/A, (187L/ha), was used as the carrier. Purpose of Application: Control of annual broadleaves and grass weeds. Sprayed preemergence.

Areas:
Resource_Gradient_Non-Irrigated

Observation Type:
Mechanical Weed Control

Activities:

Worker: Joe Simmons

Equipment: John Deere 5220 Tractor

Equipment: Top Air Sprayer • Material: water @ 20.0 gallon per acre • Material: Dual II Magnum (s-metolachlor (+ safener)) @ 1.33 pint per acre • Material: Herbicide Atrazine 4L @ 1.0 pound per acre • Material: Herbicide Callisto (mesotrione) @ 6.0 ounce per acre

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