ISO 22866:2005

Overview

ISO 22866:2005 – Equipment for Crop Protection - Methods for Field Measurement of Spray Drift is an international standard developed by the International Organization for Standardization (ISO). It establishes the principles and procedures for accurately measuring droplet drift from equipment used to apply plant protection products. The scope covers tractor-mounted, trailed, and self-propelled agricultural sprayers in arable field crops (boom sprayers), as well as in bush and tree crops, including vines, hops, and fruit (broadcast air-assisted sprayers). The standard is foundational for risk assessment studies, supporting environmental safety and regulatory compliance in agricultural spraying operations.

Key Topics

• Measurement Principles: Defines procedures for conducting field measurements of spray drift, focusing on both ground and airborne deposition at defined distances downwind of treated areas.
• Equipment Coverage: Applies to a range of plant protection product applicators, including boom sprayers for field crops and broadcast air-assisted sprayers for orchards and bush crops.
• Sampling Protocols: Details setup of sampling arrays, distance measurement, replication, and data capture to enable reliable and reproducible drift measurement.
• Meteorological Conditions: Specifies required weather condition monitoring such as wind speed, wind direction, temperature, and humidity during testing, ensuring valid and comparable results.
• Documentation and Reporting: Outlines mandatory recording of all relevant test conditions (equipment settings, environmental data, crop characteristics) and structured presentation of results to support comparisons between trials.
• Collector Selection and Handling: Provides guidance on selecting and using samplers and collectors for reliable drift measurement, including validation and maintenance to ensure accurate data.

Applications

ISO 22866:2005 serves as a reference tool for:

• Environmental Risk Assessment of Pesticides: Enabling standardized measurement of spray drift to assess potential contamination of surface water, field margins, non-target crops, and sensitive habitats.
• Regulatory Compliance: Supporting manufacturers, regulators, and agricultural practitioners in meeting national and international requirements for crop protection equipment testing and certification.
• Comparative Studies: Facilitating accurate comparisons between different types of spraying systems, nozzle technologies, and application techniques under controlled field conditions.
• Research and Development: Providing a framework for R&D in spray technology aimed at minimizing off-target drift and improving application efficiency.
• Training and Best Practice: Assisting agronomists, applicators, and extension services in understanding operational factors affecting spray drift, thus supporting improved spray management and reduced environmental impact.

The standard is relevant across global agricultural sectors, including arable farming, horticulture, viticulture, and specialty crops, wherever chemical crop protection is practiced.

Related Standards

• ISO 22369: Crop protection equipment - Drift classification of sprayers and nozzles (provides guidance for reference spraying systems and drift classification).
• Standards covering good agricultural practice, risk assessment of plant protection products, and environmental monitoring.
• National and regional protocols for pesticide registration, water quality protection, and agricultural machinery performance.

By harmonizing measurement methods, ISO 22866:2005 promotes consistency in spray drift data collection and interpretation, driving advancements in crop protection technology and safeguarding environmental resources.

Keywords: ISO 22866, crop protection, spray drift measurement, agricultural sprayers, environmental risk, plant protection products, boom sprayers, field testing, spray drift samplers, air-assisted sprayers, pesticide application, spray drift collectors, regulatory compliance.