T/NAASS 092-2024 Active Group standards

T/NAASS 092-2024 The comprehensive prevention and control technical regulations for potato scab disease

Publish Date: 2024-09-05 Implement Date: 2024-10-05 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/NAASS 092-2024

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Terminology (principles and coordination and cooperation)

Publish Date: 2024-09-05

Implement Date: 2024-10-05

Scope

Scope: This document specifies the terminology definitions, prevention and control principles, and prevention and control measures for potato scab disease, as well as the grading of disease indexes. This document is applicable to the production of detoxified seed potatoes and commercial potatoes. Main technical content: 3. Terminology and definitions The following terms and definitions are applicable to this document: 3.1 Potato scab disease A soil-borne disease caused by pathogenic Streptomyces spp. that damages potato tubers. 3.2 Pathogens of potato scab disease Including Streptomyces scabies, which causes acidic scab lesions; Streptomyces turgidiscabies, which causes convex scab lesions; and more than 30 other species such as Streptomyces galilaeus and Streptomyces Bobili. 3.3 Symptoms of potato scab disease Mainly harming potato tubers. After infection, brown spots appear on the tuber surface, which gradually expand. The tissue around the infection point necrotizes, and the tuber surface becomes rough with lignified tissues, forming convex, concave, or flat scab lesions (see Appendix A). 4. Prevention and control principles The principle is "prevention-oriented, integrated prevention and control", and the goal is "green and safe, soil conservation". Comprehensive prevention and control involving agricultural measures, physical measures, chemical measures, and biological measures should be coordinated and compatible. 5. Prevention and control measures Agricultural measures: 5.1.1 Variety selection Select high-yield and scab-resistant varieties. Recommended varieties are listed in Appendix B. 5.1.2 Seed potato selection After acclimatizing the detoxified tissue-cultured seedlings used for primary seed propagation, wash off the culture medium with 0.5% potassium permanganate solution, rinse with clean water, and remove old roots. Plant the seedlings in weakly acidic substrates with a relative water content of over 70%. During se