The Small Robot Company (SRC) plans to roll out Britain’s first fully autonomous crop-scanning service across 50 farms next season, which has the potential to reduce herbicide use by 77% and fertiliser costs by 15%.
Rolled out in “service pods” of up to six local farmers across a 120ha area, the group of farmers will share the use of a single Tom scanning robot.
This will enable them to assess weed density and crop health data in order to create treatment maps to target specific cropping areas.
Plant density information can be augmented with other metrics such as physiology, growth stage and weather, to support decisions on when and how much fertiliser to apply, and exactly where it’s needed.
The new service offering comprises:
Winter wheat crop count and per plant visualisation
Weed detection, geolocation and per plant imagery
Glyphosate treatment sprayer export
Herbicide treatment sprayer export
Fertiliser treatment sprayer export
How does it work?
The launch of SRC’s commercial per plant farming robot services follows successful trials on three farms during this year’s autumn growing season.
The trials covered 118ha and located 446 million wheat plants, in which 4.6 million weeds were identified. Tom’s six on-board cameras, mounted on a boom, are capable of delivering a ground sample distance of 0.39mm per pixel.
The Tom robot scans the field, building an understanding of where every plant is and what each one needs to achieve optimal performance.
The robot accurately geolocates and analyses data on every plant in the field, determining precise plant counts, as well as broadleaf weeds. It can identify individual water droplets on leaves and early signs of disease outbreak.
With a survey speed of 2.2ha/hour, Tom gathers 15,000 images from its cameras, or 40Gb of per plant intelligence, for every hectare.
“With input costs on the rise, farmers are increasingly under pressure. Up to 90% of inputs are wasted. This is not economically or environmentally viable. Fertiliser alone is a major contributor to agricultural emissions,” comments Sam Watson Jones, president and co-founder of the Small Robot Company.
“Robotics gives huge scope to close the gap: delivering applications by exception. Precision monitoring alone can provide immediate value, optimising existing sprayers for herbicide and fertiliser applications. But we believe that’s just the tip of the iceberg in terms of the potential for what per-plant farming can deliver, both in input-cost savings and yield enhancement.”
After Tom geolocates data from the field, this information is made available to farmers by, SRC’s artificial intelligence advice engine, known as Wilma, which creates treatment maps to advise farmers on the best action to take.
This information is used to inform variable rate fertiliser applications and to spot-apply herbicides through nozzle control and sectional control sprays.
For example, weed surveys this season have revealed surprisingly few areas of the field where the density was more than one weed/m². With this information, SRC can create heat maps so that farmers can only treat problem areas, rather than blanket treat the whole field.
Future services currency in development or trials include robotic non-chemical weeding; disease identification and fungicide treatment sprayer export; soil sampling and insights; and grass weed classification, including blackgrass.