Best Tow Behind Chemical Sprayers for Lawn and Farm Applications

For contractors and serious homeowners seeking efficient, wide-area chemical application, tow behind sprayers offer durable pumps, wide booms, and sturdy frames. This guide highlights five top options suitable for spraying lawns, pastures, or fields. The best picks balance capacity, pump performance, and maneuverability for jobs ranging from small lots to larger properties. The following products are chosen for reliability, feature sets, and real-world utility.

Product
NorthStar Tow-Behind 31-Gallon (Model 282785) 31 gallons 2.2 GPM Large lawns, long runs, heavy herbicide work
NorthStar Tow-Behind 21-Gallon (Model 282780) 21 gallons 2.2 GPM Medium lawns, tighter spaces
Master Mfg 36-Gallon Premium Pull-Behind 36 gallons 3.0 GPM Higher-flow projects, larger swaths
Chapin 15-Gallon Tow-Behind Deluxe 15 gallons 2.5 GPM ATV/UTV attachments, smaller areas
Master Mfg 24-Gallon Deluxe Pull-Behind 24 gallons 2.2 GPM Balanced size and coverage

NorthStar Tow-Behind 31-Gallon Sprayer (Model 282785)


NorthStar 31-Gallon Tow-Behind Sprayer

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The NSQ Series on-demand pump delivers 2.2 GPM at up to 70 PSI with a Santoprene diaphragm and DXS-3 Viton valves. This configuration supports faster priming and strong chemical resistance for all-day use. Best for professionals needing durable, continuous operation and a wide spray footprint.

  • Best for high-demand, all-day spraying on large properties
  • Spring-loaded breakaway boom provides 120-inch overall width with independent left/right controls
  • 31-gallon UV-resistant tank on a heavy-duty powder-coated steel cart

Limitations to note: the unit’s size and weight may reduce maneuverability in tight spaces. Ensure stable towing on uneven terrain to prevent tipping during full-load spraying.

NorthStar Tow-Behind 21-Gallon Sprayer (Model 282780)


NorthStar 21-Gallon Tow-Behind Sprayer

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This model uses the NSQ Series 2.2 GPM, 70 PSI pump with a 100% continuous duty motor, designed for uninterrupted professional use. The 21-gallon tank pairs with a 12V system and a rugged steel cart for steady onsite performance.

  • Better for medium-sized properties and mid-range projects
  • 60–120 inch spray width with independent nozzle control for precise coverage
  • Compact 21-gallon capacity reduces weight without sacrificing flow rate

Limitation: smaller tank means more frequent refills for larger jobs. Plan routes to minimize downtime between fills.

Master Mfg 36-Gallon Premium Pull-Behind (Model Noted)


Master Mfg 36-Gallon Deluxe Sprayer

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With a 36-gallon tank and a 3.0 GPM on-demand diaphragm pump, this unit targets larger-area broadcast spraying. The 10-foot swath capability expands coverage quickly, and the boom folds horizontally for storage.

  • Best for expansive lawns or fields where speed matters
  • High flow rate supports fewer passes to complete jobs
  • Folding boom aids storage in compact spaces

Caution: ensure the higher-flow pump remains within recommended operating conditions to avoid excessive chemical splatter or drift in windy conditions.

Master Mfg 24-Gallon Deluxe Pull-Behind


Master Mfg 24-Gallon Deluxe Sprayer

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Offers a balanced option with a 24-gallon tank and a 2.2 GPM pump. The 7-foot spray swath and compact storage profile make this a versatile choice for mid-sized properties and maintenance tasks.

  • Best for balanced efficiency and portability
  • Includes a compact boom design with quick attach nozzles
  • Suitable for frequent, smaller projects across varied terrains

Limitation: 2.2 GPM is solid for standard applications but may need longer run times for dense weed patches or heavy coverage in windy conditions.

Chapin 15-Gallon Tow-Behind Deluxe (Model 97761)


Chapin 15-Gallon Tow-Behind Deluxe Sprayer

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Two-tank arrangement—one for water and one for concentrate—lets users mix on exit, reducing clogging risks and enabling tailored mixtures for spot treatment. Includes a 2.2 GPM pump and quick-connect clips for fast setup.

  • Best for targeted applications and mixing on the go
  • Separate concentrate and water tanks improve control
  • Fits ATV/UTV towing setups for smaller properties

Limitation: lighter 15-gallon capacity may require more frequent refilling on large jobs; plan routes to minimize downtime.

Buying Guide: Tow Behind Sprayers For The Home And Farm

Who should consider tow behind sprayers? Professionals spraying large areas, property owners with mid to large lawns, and contractors needing fast coverage will benefit. Consider tank size, pump specs, and booms when choosing. Use these questions to compare options quickly.

What tank size do I need?

Tank size affects refilling frequency and overall weight. Larger tanks (31–36 gallons) reduce stops on big jobs but are heavier to tow. Smaller tanks (15–24 gallons) are easier to maneuver and store but require more frequent refills.

How important is pump flow and pressure?

Higher GPM and PSI support faster coverage but may increase drift risk in windy conditions. Choose a pump that matches your typical application rate and spray width. Continuous-duty pumps are better for all-day use on large projects.

What about the boom design?

Spring-loaded breakaway booms protect against impact and keep lines intact. A 120-inch overall width yields broad coverage, while independent nozzle controls help tailor spray to edges and tight spots.

What material and build quality matter?

UV-resistant tanks and powder-coated steel frames extend life in sun and chemical exposure. Ensure tank walls are thick enough for the chosen herbicides and that the cart offers stable towing with appropriate wheels.

Which features improve reliability?

Look for a proven on-demand diaphragm pump, Viton valve construction, and easy maintenance design. Quick-attach nozzle options, filter baskets, and clear level monitoring improve on-site efficiency.

FAQ

  1. What is the advantage of a 120-inch spray width? It covers more area per pass, reducing overall spraying time, especially on lawns and fields.
  2. Is a larger tank always better? Not always. It reduces refills but adds weight and towing effort. Choose based on job size and towing setup.
  3. Do all tow-behind sprayers work with Roundup products? Many are compatible, but confirm chemical compatibility with the tank material and seals before use.
  4. Can I spray along fences and edges accurately? Yes, models with independent left/right nozzle control enable precise edge coverage.
  5. How do I prevent clogging when using concentrates? Use a dedicated concentrate tank, clean screens, and follow the manufacturer’s mixing guidelines to reduce debris entry.
  6. What maintenance is essential for an all-day sprayer? Regular pump priming checks, valve inspection, filter cleaning, and ensuring hoses are secure prevent downtime.