T/SNX 10-2023 Suining Fresh Lemon Pest and Disease Prevention and Control Technical Specifications

Scope

Main Technical Content: 1. Scope This document specifies the hazards, occurrence patterns, and prevention methods of diseases and pests throughout the lemon production process. It applies to the prevention and control of lemon pests and diseases within the administrative area of Suining City. 2. Normative Reference Documents This document does not reference any normative documents. 3. Terms and Definitions This document does not define any terms or definitions. 4. Prevention Principles We shall adhere to the phytosanitary principle of "prevention-oriented, integrated prevention and control", with agricultural prevention as the foundation, prioritizing physical and biological prevention methods, and supplementing them with chemical prevention measures. 5. Major Lemon Diseases 5.1 Ulcer Disease 5.1.1 Hazards It damages new shoots, leaves, and fruits, and in severe cases, causes leaf drop, fruit drop, and branch death. 5.1.2 Occurrence Patterns High temperatures and heavy rainfall facilitate the reproduction and spread of pathogens. Pests such as leaf miners can cause wounds on branches, leaves, and fruits, exacerbating the disease. Young seedlings and saplings are more susceptible to the disease than older trees. 5.1.3 Pathogen Ulcer disease is caused by Xanthomonas campestris. 5.1.4 Prevention Methods Prevent the introduction of pathogens from external nursery materials. Remove and destroy infected seedlings immediately upon detection. Apply copper-based pesticides 2-3 times during each shoot growth period and after harvest. Control leaf miners during summer and autumn shoot growth. Avoid mixing susceptible varieties (lemons) with other varieties. Clear the orchard in winter and burn infected branches. 5.2 Rapid Decline Disease 5.2.1 Hazards Leaf yellowing and mottling. Plants become stunted, with short branches and internodes, twisted leaves, small and rigid fruits, and adenoid and grooved wood tissues leading to plant death

Development Information

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