How big of a sprayer do I need for 10 acres?

How big of a sprayer you need for 10 acres depends on what you are spraying, application rate, and whether you want to cover it in one fill or multiple fills, but generally you need a large tow-behind or 3-point hitch sprayer of 60 to 150 gallons with boom for efficient coverage. Application rates for herbicides and fertilizers are typically 15 to 20 gallons per acre for broadcast spraying, so for 10 acres at 15 gallons per acre you need 150 gallons total spray solution. If you have a 60-gallon sprayer, you would need 2 to 3 fills to cover 10 acres, which is manageable. If you want to cover 10 acres in one fill, you need 150-gallon tank. For pasture weed control with ATV, a 25 to 40-gallon tow-behind with 10 to 12-foot boom would work but require many refills, maybe 6 fills for 10 acres, which is time-consuming. For efficient farming, a 110 to 150-gallon 3-point hitch sprayer with 15 to 20-foot boom attached to tractor is ideal for 10 acres, allowing you to cover 10 acres in 1 to 2 fills. If you use boomless nozzles that spray 30 feet wide, you can cover faster but with less precision. For spot spraying only, a 25-gallon sprayer with wand is enough. So for 10 acres broadcast, 60 gallons minimum, 150 gallons ideal for one fill.