T/YNRZ 014-2025 Comprehensive Prevention and Control Technology Specifications for Mango Deformity Disease

Scope

Scope: This document specifies the technical requirements for the identification, occurrence patterns, transmission routes, monitoring methods, and control measures of mango deformity disease, including terms and definitions, identification methods, occurrence patterns, transmission routes, monitoring methods, and control measures. This document is applicable to the prevention and control of mango deformity disease. Main technical content: 1. Terms and definitions: The following terms and definitions apply to this document. - Mango Malformation Disease: A disease caused by various Fusarium fungi, characterized by deformities in vegetative organs and inflorescences, resulting in sterility or abortion of inflorescences after fruit set, as well as impaired tree growth and reduced or complete yield loss. - Nutrient organ deformity: The loss of apical dominance in plants, leading to enlarged leaf axils or apical buds and the proliferation of numerous shoots and branches growing in bundles (see Figure 1). - Inflorescence deformity: Partial or complete deformity and enlargement of inflorescences, even forming disc-like structures, with a significant increase in the number of flowers and a shortened and thickened flower axis, resulting in clustered small flowers (see Figure 2). 2. Molecular identification: Refer to NY/T 3196 for implementation. 3. Occurrence patterns: - Time: The peak occurrence periods of deformity disease are during the spring flowering period, new shoot growth, and early fruit development. - Temperature: The spore germination and colony growth of the pathogen require temperatures above 5 °C, with the optimum range being 25 °C–28 °C. - Location: Inflorescences and new shoots. 4. Transmission routes: - Insects: Mainly transmitted by insects such as thrips and mango mites. - Seedlings: Transmitted via infected seedlings and scions. - Human-induced tools: Transmitted via tools such as pruning shea

Development Information

Related Standards