The major pests and diseases occurring in Tea plantations nationwide include the tea green leafhopper, grey tea geometrid, tea geometrid, tea looper, tea hairy caterpillar, tea orange spider mite, Coffee red spider mite, black scale, angular chestnut weevil, tea lace bug, tea black witch moth, tea thrips, tea stick thrips, tea blister disease, and anthracnose. This strategy is formulated to effectively control the main pests and diseases of tea plants in 2025 and ensure the safety and quality of tea production.

I. Control Objectives

Achieve a pest management implementation rate of over 90%, an overall control efficacy of more than 85%, and limit the damage caused by tea pests and diseases to less than 10%. The green control coverage should reach over 60%, ensuring that the quality of tea meets national standards for tea hygiene.

II. Control Strategy

Persist with a strategy tailored to local conditions and regional governance, employing ecological regulation as the foundation, with physical and chemical luring and biological control as the focus, and scientific and reasonable pesticide use as auxiliary measures. Prioritize healthy cultivation, immune induction, light trapping, color board luring, sex pheromone trapping, biopesticides, and the protection and utilization of natural enemies. Use safe, efficient, low-toxicity, and low-residue pesticides scientifically and reasonably. Integrate unified prevention and control with green control to safeguard the quality safety of tea and the ecological safety of tea gardens.

III. Control Measures

(I) Key Pest and Disease Control Targets by Region

1. South China Tea Region: Primarily includes Hainan Province, southern Yunnan, central and southern Guangdong, southern Guangxi, and southeastern Fujian. Focus on controlling the tea green leafhopper, coffee red spider mite, grey tea geometrid, tea looper, angular chestnut weevil, black scale, tea black witch moth, tea leafroller, tea thrips, tea orange spider mite, black scale, tea blister disease, and anthracnose.

2. Southwest China Tea Region: Primarily includes central and northern Yunnan, southeastern Tibet, Sichuan Province, Guizhou Province, and Chongqing Municipality. Focus on controlling the tea green leafhopper, grey tea geometrid, coffee red spider mite, tea orange spider mite, tea looper, tea stick thrips, tea lace bug, tea thrips, tea black witch moth, black scale, tea eriophyid mite, tea blister disease, anthracnose, and tea white spot disease.

3. Jiangnan (Southern China) Tea Region: Primarily includes northern Guangdong, northern Guangxi, northern Fujian, Zhejiang Province, Jiangxi Province, Hunan Province, southeastern and western Hubei, Anhui Province, and southern Jiangsu. Focus on controlling the tea green leafhopper, grey tea geometrid, tea geometrid, tea orange spider mite, tea eriophyid mite, black scale, tea black witch moth, tea looper, tea aphid, angular chestnut weevil, angular chestnut weevil, tea lace bug, tea leafroller, tea white spot disease, anthracnose, and tea blister disease.

4. Jiangbei (Northern China) Tea Region: Primarily includes northern Hubei, northern Anhui, northern Jiangsu, southeastern Shandong, southern Henan, southern Shaanxi, and southern Gansu. Focus on controlling the tea green leafhopper, grey tea geometrid, tea orange spider mite, tea lace bug, tea looper, black scale, tea aphid, tea tortrix moth, tea blister disease, and anthracnose.

(II) Main Pest and Disease Control Technologies

1. Tea Green Leafhopper: Maintain natural vegetation around tea gardens and intercrop with herbaceous and woody plants. Allow grass to grow naturally at the edges of gardens during autumn and winter to provide shelter for natural enemies such as spiders and parasitoids, enhancing ecological control potential. During the growing season, pick tea leaves frequently and remove weeds between rows to reduce pest populations. Control options include azadirachtin, platyconoid, tea saponin, Beauveria bassiana, indoxacarb, bifenthrin, chlorfenapyr, and thiamethoxam + lambda-cyhalothrin.

2. Grey Tea Geometrid (Tea Geometrid): Combine soil cultivation and fertilization in autumn to reduce the survival rate of overwintering pupae. Install insect traps in areas prone to grey tea geometrid outbreaks, turning them on during the peak emergence period to trap adults. Place 2-3 pheromone traps per acre during the adult emergence period to trap males. Protect and utilize important natural enemies such as the tea geometrid cocoon wasp, Apanteles singlea, and spiders. Use virus-based biopesticides for biological control, ideally during the larval stages of the first or second generation, or fifth or sixth generation. Control options include Bacillus thuringiensis var. galleriae + Bacillus thuringiensis, matrine, Bacillus pumilus, Plutella xylostella NPV, thiamethoxam + lambda-cyhalothrin, deltamethrin, lambda-cyhalothrin, and abamectin + avermectin.

3. Tea Looper: Exploit the gregarious behavior of tea looper larvae for manual removal. Install insect traps in areas prone to tea looper outbreaks, turning them on during the peak emergence period to trap adults. Place 2-3 pheromone traps per acre during the adult emergence period to trap males. Use virus-based biopesticides for biological control, ideally during the larval stage. Control options include Bacillus thuringiensis, matrine, Bacillus pumilus, lambda-cyhalothrin, and abamectin + avermectin.

4. Tea Orange Spider Mite: Pick tea leaves frequently to remove eggs, mites, and nymphs. Apply lime-sulfur or mineral oil in late autumn to seal the garden. Treat with platyconoid or mineral oil before the peak of tea orange spider mite activity.

5. Black Scale: Improve garden management, thin out branches, and clean up the garden to promote ventilation and inhibit the development of black scale. Use pheromones and yellow boards to trap adults during the peak emergence of overwintering adults, placing 15-20 boards per acre. Spray imidacloprid + bifenthrin or deltamethrin during the peak hatching of the first generation larvae. Apply lime-sulfur or mineral oil in autumn to seal gardens with high overwintering populations.

6. Tea Thrips: Pick tea leaves frequently to disrupt their habitat and remove eggs, nymphs, and adults. Use pheromones and blue (or yellow-green) boards to trap adults. Treat concurrently when controlling other major pests like the tea green leafhopper and grey tea geometrid.

7. Tea Eriophyid Mite: Pick tea leaves frequently to remove eggs, mites, and nymphs. Control options include mineral oil. Non-harvest gardens or gardens sealed after autumn can be treated with lime-sulfur or mineral oil.

8. Coffee Red Spider Mite: Pick tea leaves frequently to remove eggs, mites, and nymphs. Non-harvest gardens or gardens sealed after autumn can be treated with lime-sulfur or mineral oil. Treat with mineral oil during the peak of mite activity.

9. Tea Blister Disease: Pick tea leaves frequently and prune at appropriate times to remove diseased leaves. Clear dead branches to improve garden ventilation. Balance fertilization to enhance the disease resistance of tea plants. In heavily affected gardens, spray polyoxin, tebuconazole, or pyraclostrobin twice during the initial stages of the disease, with intervals of 7-10 days between applications.

10. Anthracnose: When planting new gardens, select resistant and healthy seedlings. Balance fertilization to enhance disease resistance