T/NAASS 098-2024 Technical Specifications for Stem and Leaf Weeding Operations of Rice Fields by Drone in Ningxia

Scope

Scope: This document specifies the operational requirements for stem and leaf weed control by drones in rice fields, herbicide selection, field operations, weather conditions, operational requirements, operational processes, and post-operational maintenance, etc. This document is applicable to rice production in Ningxia; Main technical content: 3. Terms and definitions: There are no terms or definitions that need to be defined in this document. 4. Operational requirements: The drones used for plant protection should comply with the requirements of NY/T 3213-2018. The operational personnel include flight controllers, auxiliary workers, and safety managers. The flight controllers and safety managers should be trained to understand the occurrence laws of rice pests and diseases and the safe application techniques of pesticides. The flight controllers must obtain training certificates from relevant institutions. 5. Herbicide selection: It should comply with the requirements of GB/T 8321 and NY/T 1276-2007. For herbaceous weeds such as barnyardgrass, cyanofluoride herbicide, or fivefluorosulfuron, etc., should be selected. For broadleaf weeds such as sedge, cattails, and wild yam, dicamba, benzimidazole, or clopyralid should be selected. 6. Field operations: Weeding operations should be carried out when the rice plants are in the two-leaf-one-heart stage. The pesticide should be diluted twice and mixed with spraying aids. Before spraying, there should be no water layer in the field. After 48 hours of spraying, the water should be replenished, and a shallow water layer should be maintained for 5 to 7 days. 7. Meteorological conditions: Before operations, the temperature, humidity, wind direction, and wind speed in the operation area should be checked. When the outdoor temperature exceeds 35℃, the wind speed is ≥3 levels, or when there are meteorological phenomena such as rain, hail, lightning, or fog, operations are prohibited. The operators should not be located in the d

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