What area is used to calibrate a small spray tank using the 128th-acre method?

The correct area used to calibrate a small spray tank using the 128th-acre method is 340 square feet. This method allows applicators to determine the proper delivery rate of the spray equipment for a specific area by measuring out an area that represents 1/128 of an acre, which is critical for achieving accurate pesticide application rates.

By converting acres to a more manageable square footage, the 128th-acre method helps in aligning the spray output with the area to be treated. Specifically, 1 acre is equivalent to 43,560 square feet, and when you divide that by 128, it results in 340 square feet. Calibrating with this specific area ensures that for every 340 square feet treated, the applicator can apply chemicals at a consistent rate, thereby enhancing effectiveness and reducing waste. This is particularly important in Integrated Pest Management practices where precision is vital for maintaining environmental safety and effective pest control.

Using any of the other areas mentioned would not correspond to the 128th-acre standard, making them unsuitable for this calibration method. Understanding this calibration process is an essential component of effective and responsible pesticide application.