Tebuthiuron 80% WDG – Soil-Residual Herbicide for Total Vegetation Control

Tebuthiuron 80% WDG é um persistent urea herbicide formulated as a water-dispersible granule, designed for long-term suppression of broadleaf weeds, grasses, and woody plants in non-crop areas (industrial sites, railways) and select crops (sugarcane, pineapples). As a photosynthesis inhibitor (PSII, HRAC Group 5), it provides 1–2 years of residual control through root uptake and soil mobility, making it ideal for low-maintenance vegetation management .

Especificações técnicas

Parâmetro Especificação
Ingrediente ativo Tebuthiuron 80% (w/w)
Classe química Substituted urea (PSII inhibitor)
Tipo de formulação Grânulo Dispersível em Água (WDG)
Modo de ação Blocks electron transport in PSII → disrupts photosynthesis
Target Vegetation Broadleaves, grasses, shrubs (CynodonAmarantoAcacia)
Solubilidade Moderate (2,500 mg/L at 25°C)
Meia-vida do solo DT₅₀: 180–360 days (persistent)
Prazo de validade 3 years (store at 10–30°C in dry conditions)

Critical Use Restrictions

  • Non-Selective: Total vegetation control – avoid near desirable plants.

  • Groundwater Hazard: High leaching risk (GUS index: 3.8) – prohibited in sandy soils or near aquifers .

  • Global Bans: Withdrawn in EU (2002) and Australia; restricted use in USA/Canada .

Diretrizes de aplicação

Usos Registrados:

Site Dosagem (kg/ha) Target Vegetation Método
Industrial Sites 4.0–8.0 Brush, perennial grasses Soil-surface broadcast
Sugarcane (Pre-plant) 2,0–3,0 Cynodon dactylonSorgo halepense Incorporação no solo
Silvicultura 3.0–6.0 Woody invasives (Acacia) Spot treatment

Principais Práticas:
⚠️ Ativação: Requires 25–50 mm rainfall within 10 days.
⚠️ Zonas de Amortecimento: 100m from water bodies, 500m from croplands.
⚠️ Single Application Limit: ≤8 kg/ha/year to reduce leaching risk .

Perfil Ambiental e de Segurança

Parâmetro Dados Status regulatório
Toxicidade em mamíferos Moderate (Rat oral LD₅₀: 644 mg/kg) Classe II da OMS (moderadamente perigoso)
Ecotoxicidade Extremely toxic to fish (LC₅₀: 0.09 mg/L) EPA Restricted Use Pesticide (RUP)
Ligação do solo Koc: 80 (high leaching potential) GUS index: 3.8 (high risk)
Intervalo de reentrada 48 horas Full PPE mandatory

Vantagens e Limitações

Vantagens:
✅ Long-Term Control: 12–24 months suppression after single application.
✅ Custo-benefício: Reduces mechanical clearing by 80% in trials.
✅ Gerenciamento de resistência: Eficaz contra ervas daninhas resistentes ao glifosato.

Limitações:
⚠️ Non-Target Damage: Root zone migration kills adjacent vegetation.
⚠️ Persistência: Residual activity limits land reuse (wait 24+ months for sensitive crops).

Status regulatório global

Região Status Key Restrictions
EUA Restricted Use (EPA Reg. No. 352-399) Certified applicators only; groundwater monitoring
Canadá Limited registration (PMRA Dir. 2017-01) Prohibited in areas with <60 cm soil depth
UE Banned (2002)
Brasil Approved for sugarcane (2021) Mandatory 500m crop buffers

Handling & Storage

  • Embalagem: 25 kg moisture-proof bags with inner liner.

  • Armazenamento: Secure, ventilated area; separate from food/feed.

  • Spill Response: Contain with absorbent material; collect in sealed containers.

  • Descarte: Incinerate at licensed facilities (>1,000°C) .

PERGUNTAS FREQUENTES

Q: Can tebuthiuron be used near water?
UM: No – groundwater contamination risk; 100m buffer required from aquatic systems .

Q: How to remediate contaminated soil?
A: Activated charcoal (1–2% w/w) or microbial remediation (Pseudomonas spp.) over 6–12 months .

Q: Alternatives for eco-sensitive areas?
A: Mudar para indaziflam (lower persistence) or mechanical/thermal weeding.

⚠️ Compliance Notice:
Este produto é highly regulated due to environmental persistence. Always:

  1. Conduct soil percolation tests before application.

  2. Consult local groundwater vulnerability maps.

  3. Manter detailed application records for auditing.

Glufosinato de Amônio

Herbicida Glufosinato-Amônio

O herbicida Glufosinato de Amônio é um herbicida pós-emergente de ação rápida e não seletivo, desenvolvido para controlar um amplo espectro de plantas daninhas anuais e perenes, incluindo espécies resistentes ao glifosato. Desenvolvido para agricultura comercial,

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