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Tebuthiuron 80% WDG

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

Tebuthiuron 80% WDG ni a 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 .

Pata Nukuu ya Haraka

Maelezo ya kiufundi

Kigezo Vipimo
Kiambatanisho kinachotumika Tebuthiuron 80% (w/w)
Hatari ya Kemikali Substituted urea (PSII inhibitor)
Aina ya Uundaji Chembechembe inayoweza kutawanyika kwa Maji (WDG)
Njia ya Kitendo Blocks electron transport in PSII → disrupts photosynthesis
Target Vegetation Broadleaves, grasses, shrubs (Cynodon, Amaranthus, Acacia)
Umumunyifu Moderate (2,500 mg/L at 25°C)
Udongo Nusu ya Maisha DT₅₀: 180–360 days (persistent)
Maisha ya Rafu 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  • Global Bans: Withdrawn in EU (2002) and Australia; restricted use in USA/Canada .

Miongozo ya Maombi

Matumizi yaliyosajiliwa:

Tovuti Kipimo (kg/ha) Target Vegetation Mbinu
Industrial Sites 4.0–8.0 Brush, perennial grasses Soil-surface broadcast
Sugarcane (Pre-plant) 2.0–3.0 Cynodon dactylon, Halepense ya mtama Uingizaji wa udongo
Misitu 3.0–6.0 Woody invasives (Acacia) Spot treatment

Mazoea Muhimu:
⚠️ Uwezeshaji: Requires 25–50 mm rainfall within 10 days.
⚠️ Kanda za Buffer: 100m from water bodies, 500m from croplands.
⚠️ Single Application Limit: ≤8 kg/ha/year to reduce leaching risk .

Wasifu wa Mazingira na Usalama

Kigezo Data Hali ya Udhibiti
Sumu ya Mamalia Moderate (Rat oral LD₅₀: 644 mg/kg) Daraja la II la WHO (Hatari kiasi)
sumu ya mazingira Extremely toxic to fish (LC₅₀: 0.09 mg/L) EPA Restricted Use Pesticide (RUP)
Kufunga kwa udongo Koc: 80 (high leaching potential) GUS index: 3.8 (high risk)
Muda wa kuingia tena Saa 48 Full PPE mandatory

Faida na Mapungufu

Faida:
✅ Long-Term Control: 12–24 months suppression after single application.
✅ Ufanisi wa Gharama: Reduces mechanical clearing by 80% in trials.
✅ Usimamizi wa Upinzani: Hufaa dhidi ya magugu yanayostahimili glyphosate.

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

Hali ya Udhibiti wa Kimataifa

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

Handling & Storage

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

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

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

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

Maswali Yanayoulizwa Mara kwa Mara

Q: Can tebuthiuron be used near water?
A: 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: Badili hadi indaziflam (lower persistence) or mechanical/thermal weeding.

⚠️ Compliance Notice:
Bidhaa hii ni highly regulated due to environmental persistence. Always:

  1. Conduct soil percolation tests before application.

  2. Consult local groundwater vulnerability maps.

  3. Dumisha detailed application records for auditing.

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