Drones & Crop Monitoring

Buying advice

Weigh the drone with a full tank

In the United States, the FAA's guidance on dispensing chemicals with drones draws a line at 55 pounds, including the weight of the substance being dispensed. Below it, operators may fly under 14 CFR Part 107 with an exemption from the rule on carrying hazardous material; at or above it, they fly under Part 91 and Part 137 and need exemptions from several regulations. Either way, the FAA still expects an Agricultural Aircraft Operator Certificate. Ask each maker for the take-off weight with a full tank and fresh batteries, because that loaded figure, not the empty airframe, decides which route your application takes and how long the review may last.

Check drift design against ISO 23117-1

ISO 23117-1:2023 sets environmental requirements for unmanned aerial spraying systems with a maximum take-off mass of no more than 150 kg, aimed at limiting contamination during use and foreseeable misuse. It does not deal with operator safety, so it answers a different question from your pilot training. Ask the makers of the DJI Agras T50, XAG P100 Pro, AutoCopter G15 and Rantizo Spray Drone Kit whether their spraying system has been assessed against it, and request the evidence. In Europe, Directive 2009/128/EC prohibits aerial spraying unless a derogation applies, so confirm that the products you intend to use may lawfully be applied from a drone where you farm.

Costs that arrive after the airframe

On the October 2026 review, the gap between the Guardian SC1 (Scout) (about $25,000) and the AutoCopter G15 (about $75,000) set the listed range, and every listing had a published price. A working spray operation needs more than the aircraft. Budget for spare battery sets and a charger or generator that can keep pace in the field, a mixing and water supply point, nozzles and pumps as wear parts, insurance, and the hours a qualified pilot spends planning each job. If you are setting a spray drone against the Taranis listing, cost both over a full season rather than as one-off purchases, since subscriptions, imagery and agronomy support change the sums. Ask who repairs a crashed drone locally and how long a replacement takes.

What to look for

• Tank size, spray width and hectares covered per flight
• Local rules on aerial spraying, and any pilot licence you'll need
• Mapping and data tools, and how they connect to your farm software

Common questions

Do I need a licence to fly a spray drone?

In many countries, yes. Rules for flying drones and applying crop protection products from the air vary by country, so check local requirements before you buy.

What's the difference between a spray drone and crop monitoring?

Spray drones carry a tank and apply products directly. Monitoring tools capture imagery that shows where crops need attention, so many farms use the two together.

Sources and further reading

• ISO 23117-1:2023 Agricultural and forestry machinery: unmanned aerial spraying systems, Part 1: Environmental requirements — International Organization for Standardization.
  Design requirements that limit environmental contamination from spray drones with a take-off mass of up to 150 kg.
• Dispensing Chemicals and Agricultural Products (Part 137) with UAS — US Federal Aviation Administration.
  FAA guidance on the exemptions, operator certificate and weight thresholds for drones that spray or spread on farms.
• Directive 2009/128/EC on the sustainable use of pesticides — European Union (EUR-Lex).
  EU framework for pesticide use, including the general prohibition of aerial spraying and the terms for derogations.