About the Tom Dick Harry Robot Fleet
Tom, Dick and Harry are the three-robot fleet developed by the UK’s Small Robot Company to deliver per-plant farming: managing arable crops as individual plants rather than as a uniform field. Tom is the scouting robot, autonomously travelling cereal fields and capturing plant-level imagery that maps every weed and crop plant across the monitored area. Dick takes action on that intelligence, identifying individual weeds and eliminating them with precision micro-spraying or, in its most advanced form, electrical zapping that kills weeds without any chemistry at all. Harry handles planting, drilling seed with precision placement that supports the plant-level records the whole system depends upon. Together the fleet embodies a radically different vision of arable automation: many small, light, autonomous machines replacing a few enormous heavy ones, with artificial intelligence deciding treatment plant by plant. The approach promises dramatic reductions in chemical use, elimination of compaction from heavy machinery and genuinely sustainable intensification of cereal production. Developed on British farms with farmer input throughout, the Small Robot Company platform has been a flagship of the agri-robotics movement, demonstrating how per-plant precision could reshape the economics and environmental footprint of mainstream arable farming.
Key Specifications
- Tom scouting robot maps fields plant by plant
- Dick eliminates weeds by micro-spray or electrical zap
- Harry precision planting robot
- Per-plant farming across cereal crops
- Small lightweight machines prevent compaction
- Dramatic herbicide reduction potential
- AI-driven individual plant treatment decisions
- Developed on UK farms with farmer input
Per Plant Weed Mapping
Tom’s autonomous scouting passes capture imagery that resolves individual plants across entire fields, building weed maps at a resolution conventional field walking or drone passes cannot match. Every weed is located and recorded, creating the intelligence foundation for treatment that targets actual weeds rather than assumed ones. Farmers and agronomists see precisely where pressure exists, how it changes over time and whether control measures are working. This visibility transforms weed management from calendar-based blanket treatment into evidence-based intervention. The maps also reveal patterns, such as weeds spreading along tramlines or persisting in specific soil zones, that inform longer-term strategy. For resistance-prone weeds threatening cereal production, knowing exactly where every plant is constitutes a genuine agronomic weapon.
Chemical Free Electrical Weeding
Dick’s most striking capability is killing weeds with electricity rather than herbicide: a precise electrode delivers a lethal charge through the identified weed, destroying it root and stem without a drop of chemistry. This approach sidesteps herbicide resistance entirely, since no weed evolves immunity to electrocution, and it leaves soil biology completely undisturbed. For fields where resistant weeds have defeated the chemical toolbox, electrical weeding restores control with a mechanism that cannot fail biochemically. The plant-level targeting means only weeds receive treatment while crop plants are untouched. As regulations tighten and resistance spreads, a proven non-chemical kill mechanism for broadacre weeds represents one of the most strategically important capabilities in modern arable technology.
Eliminating Soil Compaction Damage
Modern arable machinery is extraordinarily heavy, and the compaction it causes silently costs yield through restricted rooting, poor drainage and damaged soil biology across every field it travels. The Small Robot Company fleet inverts this: Tom, Dick and Harry are light enough to work fields without meaningfully compacting the soil, preserving the structure that heavy passes destroy. Fields stay workable longer after rain because the robots need no bearing capacity for tens of tonnes. Over years, uncompacted soil develops better structure and biology, improving water management and nutrient availability for every crop in the rotation. The compaction dividend compounds season after season, making lightweight robotic fleets as much a soil-health investment as a weed-control one.
Precision Planting Integration
Harry completes the loop by placing seed with the precision that per-plant management requires. Accurate, recorded seed positions mean subsequent scouting and weeding passes know where crop plants should be, simplifying the distinction between crop and weed across the season. Precision placement also optimises spacing for the target population, avoiding the gaps and bunches that reduce yield potential and complicate later management. Integration across the fleet means planting, monitoring and weeding share one plant-level dataset rather than operating as disconnected operations. Every pass by every robot enriches the same per-plant record, steadily building the detailed field intelligence that makes truly individual crop management practical at commercial scale.
Frequently Asked Questions
What does each robot do?
Tom scouts fields autonomously, mapping every plant with detailed imagery. Dick treats identified weeds with precision micro-spraying or electrical zapping. Harry plants seed with precision placement. Together they deliver per-plant arable crop management.
What is per-plant farming?
Per-plant farming means managing crops as individual plants rather than uniform fields: locating each plant, assessing it and treating it individually using small autonomous robots and AI to make plant-level decisions commercially practical.
How does electrical weeding work?
Dick identifies an individual weed and applies a precise electrical charge through it, destroying the plant including its root system without any herbicide. The method cannot trigger biochemical resistance and leaves crop and soil biology unaffected.
What crops does the system suit?
The platform targets arable crops, particularly cereals such as wheat where per-plant weed management addresses critical challenges like herbicide-resistant blackgrass, developed on UK farms with farmer involvement.
Do the robots compact the soil?
No, their lightweight design is a core advantage. Unlike heavy conventional machinery, the small robots travel fields without meaningful compaction, protecting soil structure, drainage and biology.
Is the system commercially available?
Small Robot Company developed its fleet through extensive on-farm trials with partner farmers, progressing toward commercial service models. Prospective users engage with the company regarding current availability and deployment approach.
How much can herbicide use fall?
Per-plant targeting applies treatment only where weeds exist, and electrical weeding removes chemistry entirely for treated weeds. The combined approach targets dramatic reductions versus broadcast programmes.
Why many small robots instead of big machines?
Small robots avoid compaction, work around the clock, scale by adding units and keep operating when one machine stops, trading the speed of huge implements for precision, soil protection and resilience.
