Show Observation

User: Peter Hudy

Created on: 2010-01-06

Observation Date 2009-06-25

Comment:
Sprayed the LTER main site, Nitrogen-Rate Study, for post-emergence weed control. Roundup Original Max 5.5L (gyphosate) was applied at 1 quart/acre (3.87 L/ha) and ammonium sulfate (AMS) at 17#/100gal. Weather conditions: Sunny with air temperature of 90 degrees F (33°C). Relative Humidity was 76%. Wind was from northwest at 5 mph. Time of application was between 11:0030 a.m. and 1:00 p.m. Equipment Used: JD 5220 tractor traveling 4.8 mph (gear C1, 1550 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. 20-30 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:

Worker: Peter Hudy

Equipment: John Deere 5220 Tractor

Equipment: Top Air Sprayer

Equipment: TurboTeeJet 11003 Flat Fan Nozzle • Material: Herbicide Roundup OriginalMax 5.5L @ 1.0 quart per acre • Material: Ammonium sulfate (AMS) @ 3.4 pound per acre • Material: H2O @ 20.0 gallon per acre

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