Determine the weight of the fertilizer collected. Determine the amount of fertilizer applied on a 1000 ft 2 basis as described above for the clean sweep method. Remember, a larger opening will allow the application of more fertilizer. Use the same walking speed as used previously. Liquid Applications Liquid applications typically provide more uniform distribution than granular products.
Liquid pesticides are also more effectively absorbed by weeds when applied post-emergent.
Liquid products, whether fertilizers or pesticides, may be misapplied if the equipment is not properly calibrated. Regular calibration also provides an opportunity for the applicator to check the equipment for leaks or malfunctioning components. Hand-held or backpack pump sprayers are useful for very small turf areas or spot spraying individual weeds in turf or ornamental plantings. With all liquid applications, the pressure in the spray tank will be partially responsible for the output rate and quite often the uniformity and droplet size of the product. Nozzle types affect output rate and can be dependent on pressure.