Sprayer
（重定向自Field sprayer）
![A field sprayer system made by Chafer Machinery in folded, partially unfolded and open configuration](/Images/godic/202501/13/Folded_spray_boom4717.jpg")
![Sprayer partly unfolded](/Images/godic/202501/13/Partially_unfolded_spray_boom4717.jpg")
![Sprayer fully unfolded](/Images/godic/202501/13/Fully_unfolded_spray_boom4717.jpg")
![](/Images/godic/202501/13/Turbmatic_Defender_MK2_DP_91_15004717.png")
A sprayer is a device used to spray a liquid.
In agriculture, a sprayer is a piece of equipment that is used to apply herbicides, pesticides, and fertilizers on agricultural crops. Sprayers range in size from man-portable units (typically backpacks with spray guns) to trailed sprayers that are connected to a tractor, to self-propelled units similar to tractors, with boom mounts of 60–151 feet in length.