Pattern tests should be conducted in what orientation relative to wind direction?

Pattern tests should be conducted in what orientation relative to wind direction?

• A. Opposite
• B. Perpendicular
• C. Parallel
• D. 45 Degrees

Answer: (C)

Pattern distribution is shaped by wind, so you want to observe how the spray deposits when the wind is pushing the droplets along the same path they’ll travel in the field. Conducting the test parallel to the wind direction allows the wind’s effect to be evaluated consistently along the test line, making it easier to judge coverage, nozzle-to-nozzle consistency, and drift potential in the direction the spray will move. If you test perpendicular to the wind, the wind would push droplets sideways and distort the pattern, giving a misleading picture of how the spray will behave in actual conditions. Testing from the opposite direction or at a 45-degree angle complicates interpretation because they blend wind effects from different angles. So, the pattern test should be aligned with the wind direction.

Pattern distribution is shaped by wind, so you want to observe how the spray deposits when the wind is pushing the droplets along the same path they’ll travel in the field. Conducting the test parallel to the wind direction allows the wind’s effect to be evaluated consistently along the test line, making it easier to judge coverage, nozzle-to-nozzle consistency, and drift potential in the direction the spray will move. If you test perpendicular to the wind, the wind would push droplets sideways and distort the pattern, giving a misleading picture of how the spray will behave in actual conditions. Testing from the opposite direction or at a 45-degree angle complicates interpretation because they blend wind effects from different angles. So, the pattern test should be aligned with the wind direction.