David Cahoon created a weed-spraying drone after hearing from ranchers. Demonstrated near Gates of the Mountains. Uses GPS-controlled altitude and pump rate. 1 acre with 2 gallons vs. 20 gallons by hand.
Pasture and Rangeland Drone Spraying in Montana
Agricultural drone services for pasture and rangeland in Montana. Typical rate: $14 to $25/acre
In Montana, drone spraying for pasture and rangeland sits within the broader state custom-rate band of $12 to $18/acre, with the most comparable per-acre range for pasture and rangeland applications running $14 to $25/acre. Montana sits in the Great Plains region, which shapes the disease, drift and timing pressures local operators plan around. Commercial drone applications in Montana require Category 18: Aerial Applicator from Montana Department of Agriculture (MDA) on top of FAA Part 137 certification.
About pasture and rangeland drone spraying
Pasture and rangeland is the largest land-use category in US agriculture at roughly 650 million acres (USDA NASS Census of Agriculture 2022), spanning improved pasture in the eastern half of the country, native rangeland on the Great Plains, and arid range across the western states. Drone spraying on pasture is fundamentally different from row-crop work: rather than canopy-level fungicide passes, the most common services are broadleaf weed control (2,4-D, dicamba, picloram), brush and mesquite knockdown (triclopyr, aminopyralid), and pasture seeding or fertilizer broadcast on terrain that ground equipment cannot easily reach. Per-acre rates run $14 to $25 because pasture work involves more travel, more spot-treat patterns and longer ferry distances between fields than row-crop spraying. Drones excel where ground rigs fail: ridges, wooded transition zones, riparian buffers, and rocky or hilly grazing land where airplane applicators are inefficient on small acreages. Operators serving pasture and rangeland should hold FAA Part 137 plus the state commercial pesticide applicator license with aerial endorsement; some states require a separate "pasture and rangeland" sub-category endorsement on top of the basic aerial credential. The Texas Department of Agriculture, Oklahoma Department of Agriculture, and Mountain West state ag departments publish state-specific guidance on aerial pasture work, including buffer zones for pollinator habitat and watershed protection.
Application calendar for pasture and rangeland
Green months = optimal application window
Aerial pesticide licensing in Montana
Montana requires Category 18: Aerial Applicator for aerial pesticide application. The licensing authority is Montana Department of Agriculture (MDA).
Full agency, exam and renewal-cycle details: Montana state page · 50-state licensing reference · state extension service.
Pasture and Rangeland drone operators in Montana
Agricultural company with drone application division. Provides drone spraying for county weed boards, landowners, municipalities. Sprays about 400 acres/day. Also has offices in Lansford and McClusky, ND.
Townsend-based ag drone operator offering precision spraying, spreading, crop health imaging and detailed mapping for Montana farmers and ranchers.
Southwest Montana ag drone operator. Provides crop and pasture spraying, broadcast seeding, multispectral and thermal imaging. Offers variable rate applications and shareable KML files.
Family-owned drone spraying service. Five generations of ag experience. Operates 5 drones. Key contracts with Simplot (Smart Farm) and Rantizo. Year 1: 5,000 acres; Year 2: 20,000 acres.
Largest drone spraying network in the US. Northern Rockies Hub covers northern WY and southern MT. Two application specialists, 195+ flight hours, 3,650+ acres. Customers include Jordan Farms (Worland, WY), Simplot.
FAQ: pasture and rangeland drone spraying in Montana
Drone spraying rates for pasture and rangeland in Montana typically run $14 to $25/acre for application only; the farmer supplies the chemical product. State-level custom-rate guidance for Montana averages $12 to $18/acre. Pricing varies based on total acreage, distance from the operator base and product type.
Optimal drone application timing for pasture and rangeland runs Apr, May, Jun, Jul, Aug, Sep. Exact timing depends on weather, growth stage and pest or disease pressure each season; contact a local operator in Montana for scheduling at least 4 to 6 weeks ahead of the peak window.
Commercial drone pesticide application in Montana requires three credentials: an FAA Part 107 Remote Pilot Certificate for the pilot, an FAA Part 137 Agricultural Aircraft Operator Certificate for the business, and Category 18: Aerial Applicator from Montana Department of Agriculture (MDA). Confirm any operator you hire holds all three before any application.
Drone spraying on pasture and rangeland offers zero soil compaction, the ability to operate when fields are too wet for tractors, GPS-guided uniform coverage at 95%+ accuracy and the ability to treat small or irregularly shaped fields. Peer-reviewed studies (Nature Scientific Reports 2025, ScienceDirect 2025, ACS 2023) report 46 to 75% pesticide use reduction, 65 to 70% drift reduction at field boundaries and 90 to 99% lower operator chemical exposure versus ground equipment.
Pasture work runs $14 to $25 per acre, higher than row-crop rates because of more travel between fields, more spot-treat patterns, and rougher terrain. Brush and mesquite knockdown often runs at the upper end of the range. Spot-treat work on small infestations may be billed per hour or per visit rather than per acre.
Most broadleaf weed control happens April through June while target species are actively growing and before grazing turn-out. Brush and mesquite knockdown is timed to leaf-out in late spring through early summer. Fall applications target perennial weeds going dormant. Local extension service guidance for your state is the best timing reference.
2,4-D and dicamba dominate broadleaf weed control. Triclopyr and aminopyralid are common for brush and mesquite. All three product classes have aerial application labels with specific droplet, wind and buffer requirements. Confirm the specific product label permits aerial application before booking.
Yes. Drones excel on hilly, wooded, rocky and riparian-adjacent pasture where ground sprayers either cannot enter or risk soil compaction and water-quality issues. The economics tip toward drones whenever target acres are scattered across a property rather than concentrated in one large block.
Same FAA Part 107 plus Part 137 plus state aerial applicator endorsement that any commercial drone spraying requires. Some states (Texas, Oklahoma, Mountain West) have a separate pasture or rangeland sub-category on the state license; verify with your state department of agriculture before booking work.