This document is a product technical note from Jiangsu Lanfeng Crop Science Co., Ltd., compiled based on the company's pesticide registration certificate information. It is intended for learning and reference by growers and channel partners, and does not serve as an independent basis for field pesticide application. Due to variations in local climate, soil conditions, and crop growth status, actual pesticide use should follow the product label and local agronomic guidance.
Product Family: Dafusheng (Carbendazim Series, 4 Registered Specifications)
Registration No.: Carbendazim 40% SC (PD86134-3), Carbendazim 50% WP (PD85150-8), Carbendazim 25% WP (PD84118-6), Carbendazim 500 g/L SC (PD20080333)
Chemical class: Benzimidazole systemic fungicide (FRAC Group 1)
Key characteristics: strong systemic activity, broad spectrum, affordable price, effective against a wide range of diseases caused by higher fungi, with both protective and curative effects.
Field Positioning: As a long-established "all-purpose" fungicide on grain crops, fruit trees, and vegetables, carbendazim is one of the most familiar fungicidal active ingredients to growers. Dafusheng's four formulations cover high, medium, and low concentrations, as well as two dosage forms—suspension concentrate and wettable powder—allowing selection based on specific application scenarios.
Carbendazim is a representative benzimidazole fungicide that has been widely used in China since the 1980s, making it one of the most familiar fungicide active ingredients to several generations of agrochemical professionals. It possesses strong systemic activity, being absorbed by crop roots, stems, and leaves and translocated acropetally, thereby providing both protective activity before pathogen invasion and inhibitory effects on lesion expansion during the early stages of disease development.
Dafusheng has developed carbendazim in four specifications: for those seeking high concentration, good suspension, and storage stability, the 40% SC or 500 g/L SC is recommended; for those accustomed to powder formulations and sensitive to cost, the 50% or 25% WP is suitable; for seed dressing to prevent seedling-stage diseases, both the 25% and 50% powders are registered. One brand, from foliar spraying to seed treatment, from fruit trees to rice, covers all scenarios.
⚠️ Key Reminder: After decades of use of carbendazim, pathogen resistance has developed in some regions, particularly in areas with high incidence of gray mold and Sclerotinia rot. It is essential to rotate with fungicides of different modes of action.
Professional Principles
Carbendazim inhibits the formation of tubulin during mitotic division in fungal cells, thereby preventing the normal assembly of the spindle apparatus and blocking fungal cell division and growth. It belongs to FRAC Group 1 (benzimidazoles). Carbendazim exhibits excellent systemic translaminar activity; it can be absorbed by crops and translocated acropetally, exerting both protective and curative effects.
Sure, please provide the Chinese paragraph you'd like me to translate.
Carbendazim effectively cuts off the power supply to the pathogen's "division workshop"—for fungal cells to reproduce, they must first complete cell division, which relies on the "scaffold" assembled from tubulin proteins. Carbendazim dismantles this scaffold, rendering the pathogen incapable of reproduction. When the spray solution is applied, a portion remains on the plant surface for protective action, while another portion is absorbed by the crop and translocated systemically, providing protection from the inside out.
🌱 Registered Applicable Scenarios (by Specification)
Dafusheng 40% Carbendazim Suspension Concentrate (PD86134-3): Spray at 400–800× dilution for fruit tree diseases, 1600× dilution for rice sheath blight, 188–250 g/mu for oilseed rape Sclerotinia stem rot, 125 g/mu for peanut southern blight, 1600× dilution for wheat and barley Fusarium head blight, and 250–500× dilution for sugar beet leaf spot; for cotton seedling diseases, soak seeds at 133× dilution.
2. Dafusheng 50% Carbendazim Wettable Powder (PD85150-8): 5–10 g/m² drenching for ginseng rust rot; 500–1000× dilution foliar spray for fruit tree diseases; seed dressing at 1:100 for cotton seedling diseases.
3. Dafusheng 25% Carbendazim Wettable Powder (PD84118-6): 250–500× dilution for fruit tree diseases; 200 g/mu as foliar spray for rice blast; seed dressing at a ratio of 1:50 for cotton seedling diseases.
4. Dafusheng 500 g/L Carbendazim Suspension Concentrate (PD20080333): Spray at 600–800× dilution for apple ring rot (Botryosphaeria canker).
🌾 Common Market Scenarios (Field practices beyond registered scope — please assess risks at your own discretion)
For wheat Fusarium head blight: 70-90 g/mu (40% SC); for apple ring rot: 800-1000× dilution; for apple anthracnose: 1000-1500× dilution; for tomato early blight: 60-70 g/mu; for lotus root leaf spot: 50-60 g/mu; for rice blast and rice sheath blight: 100 g/mu.
🍂 Scenarios Where Use Is Not Recommended
In areas with severe occurrence of gray mold and Sclerotinia rot, continuous single-agent use — high resistance risk, with efficacy declining year by year.
When mixed with alkaline agents, carbendazim is prone to decomposition under alkaline conditions.
Registered Specifications: All four specifications in the Dafusheng series are officially registered, with complete registration certificate numbers and clearly labeled tags.
Product properties: The suspension concentrate, after shaking, is uniform and fine with no hard lumps; the wettable powder is dry and loose with no caking.
Dilution stability: After mixing with water and stirring, a stable suspension is formed, and no significant sedimentation or stratification occurs upon standing.
Packaging Qualifications: Complete "Three Certificates" for pesticides (Registration Certificate, Production License, and Product Standard Number).
Avoid mixing with strongly alkaline agents (e.g., Bordeaux mixture, lime sulfur), as carbendazim is prone to decomposition and loss of efficacy upon contact with alkali.
Compatible with most insecticides and foliar fertilizers for tank-mixing and immediate application; however, a small-scale trial is recommended prior to full-scale use.
Do not rely solely on carbendazim in fields where resistance has already developed (e.g., greenhouses with多年 continuous cropping and gray mold outbreaks) — once resistance is established, increasing the dosage is ineffective.
Don't place an order just because the product name contains "carbendazim" — always verify the registration certificate number. Only regulated products with proper registration offer reliable quality assurance.
Do not overlook rotation—rotating with fungicides of different mechanisms of action, such as triazoles (epoxiconazole) and dicarboximides (iprodione), is key to extending the service life of carbendazim.
Carbendazim Resistance Management: Carbendazim is classified as a high-resistance-risk fungicide. After years of continuous use as a single agent, resistance in *Botrytis cinerea* and *Sclerotinia* pathogens has become widespread. Rotation strategy: use mancozeb-type protectant fungicides during the early/preventive stage; apply carbendazim at the initial stage of disease onset; in resistance-prone areas, switch to diethofencarb-based mixtures (e.g., Lanfeng Jinwanmeiling) or iprodione (e.g., Lanfeng Meiying).
Combination Package (Recommended by Lanfeng):
Fusarium Head Blight (FHB) Management Program for Wheat: Dafusheng 40% SC at 70–90 g/mu plus a flutriafol-type fungicide (Qiuzan at 14–18 mL/mu), applied at the heading-to-flowering stage when flowers are visible. The complementary modes of action between benzimidazole and triazole fungicides enhance control efficacy.
Rice Sheath Blight Program: Apply Dafusheng 40% SC at 1600-fold dilution, or 500 g/L SC at 100 g per mu, via foliar spray from the late tillering stage to before booting, in combination with field drying (mid-season drainage) for disease control.
Apple tree ring rot program: Dafusheng 500 g/L SC at 600–800× dilution, rotated with pyraclostrobin + thiophanate-methyl (Lanfeng Qingliang at 1500–2500× dilution), to reduce selection pressure from a single active ingredient.
Dafusheng is the complete matrix of Lanfeng's carbendazim family: the 40% SC and 500 g/L SC lead with high concentration and high efficacy, while the 25% and 50% WP focus on cost-effectiveness. These four formulations cover disease control and seed dressing at the seedling stage for major crops including fruit trees, rice, wheat, cotton, peanut, and rapeseed. Key application points: select the formulation according to the specific scenario, avoid mixing with alkaline agents, rotate with products of different modes of action, and prioritize premix products in high-disease-pressure areas.
As a professional agricultural plant protection translator, here is the English translation of the given Chinese paragraph: Professional terminology definitions
FRAC Group 1: Benzimidazole fungicides, which inhibit tubulin formation. Representative active ingredients include carbendazim, thiophanate-methyl, and benomyl.
Negative cross-resistance: A phenomenon in which a pathogen, after developing resistance to one fungicide, becomes more sensitive to another fungicide (e.g., benzimidazoles and diethofencarb).
Study and Exchange Notes
This series consists of product technical notes from Jiangsu Lanfeng Crop Science Co., Ltd. The content is compiled based on the company's registration certificate information and is subject to continuous refinement and updates. Growers and channel partners are welcome to share feedback and suggestions.
Carbendazim is an active ingredient that farmers are familiar with and channels sell well, but precisely because it is so familiar, it is also the easiest to be "overused and abused." Dafusheng has four specifications on the shelf—the value is not in selling more registration numbers, but in teaching retailers to "match specifications by scenario": promote the 500 g/L suspension concentrate (good suspension, storage-stable) in orchard areas, promote the 40% suspension concentrate (high cost-performance) in field crop areas, and promote the wettable powder for seed treatment for returning customers. More importantly, we should remind everyone to rotate—carbendazim has been used for decades, and making money in resistance-prone areas is no longer easy. Building up rotation products like Jinwan Meiling and Lanfeng Meiyin is the key to a sustainable business.
