Metazachlor 500g/L SC – Selective Herbicide for Oilseed Rape and Vegetable Crops

Metazachlor 500g/L SC bir chloroacetamide-class herbicide formulated as a suspension concentrate (SC), targeting grass and broadleaf weeds in oilseed rape, cabbage, and other brassica crops. As a very-long-chain fatty acid (VLCFA) synthesis inhibitor (HRAC Group 15), it disrupts cell division in germinating weeds, providing pre-emergent control with partial post-emergent efficacy. Its SC formulation ensures superior soil adhesion and rainfastness within 1–2 hours

Teknik Özellikler

Parametre	Şartname
Etken Madde	Metazachlor 500 g/L (50% w/v)
Kimyasal Sınıf	Chloroacetamide (VLCFA inhibitor)
Formülasyon Türü	Süspansiyon Konsantresi (SC)
Etki Şekli	Inhibits fatty acid elongation → disrupts cell membrane formation
Hedef Yabancı Otlar	Alopekürus miyosuroides (kara ot), Capsella bursa-pastoris (çoban çantası), Stellaria medya (yıldız otu), Poa annua (annual meadow grass)
Çözünürlük	450 mg/L (20°C)
Toprak Yarı Ömrü	DT₅₀: 20–40 days (moderate persistence)
Raf Ömrü	2 years (store at 5–30°C; avoid freezing)

Temel Özellikler ve Avantajlar

✅ Geniş Spektrumlu Kontrol:

Suppresses >25 grass and broadleaf weeds, including resistant Alopekürus miyosuroides 3.
✅ Mahsul Güvenliği:
Selective for oilseed rape, cabbagesve cauliflower; no phytotoxicity at recommended doses.
✅ Esnek Uygulama:
Etkili olanlar: ortaya çıkma öncesi (soil-incorporated) or erken çıkış sonrası (weed ≤2 leaves).
✅ Yağmura dayanıklılık:
Requires only 1–2 saat to adhere to soil particles.

Başvuru Kılavuzları

Mahsul	Dozaj (L/ha)	Hedef Yabancı Otlar	Zamanlama
Yağlı Tohum Kolzası	1,0–1,5	Black-grass, chickweed	Pre-emergence or early post-sowing
Cabbage/Cauliflower	0,8–1,2	Annual grasses, purslane	Pre-plant soil incorporation
Mustard	1.0–1.3	Shepherd’s purse, fumitory	Erken çıkış sonrası

Kritik Uygulamalar:

Aktivasyon: Requires 10–15 mm rainfall/irrigation within 5 days.
Sprey Hacmi: 200–300 L/ha (use medium-coarse nozzles).
Tank-Mix Ortakları: İle birleştirin quinmerac (broadleaf enhancement) or klomazon (uzatılmış kalıntı).

Güvenlik ve Çevre Profili

Parametre	Veri	Düzenleyici Notlar
Memeli Toksisitesi	Low (Rat oral LD₅₀: >2,000 mg/kg)	DSÖ Sınıf III (Hafif derecede tehlikeli)
Ekotoksisite	Highly toxic to fish (LC₅₀: 0.1 mg/L)	Su kütlelerinden 50 m'lik tampon
Toprak Bağlayıcı	Koc: 100–300 (moderate leaching risk)	GUS index: 2.4 (medium)
Yeniden Giriş Aralığı	24 saat	PPE: Gloves, goggles, coveralls

Önlemler:
⚠️ Sürüklenmeyi Önleyin: Sensitive to legumes, cereals, and solanaceous crops.
⚠️ Dönme Kısıtlamaları: Wait 30 days for cereals; 60 days for spinach/lettuce.

Advantages vs. Alternatives

Özellik	Metazachlor 500g/L SC	Standard S-Metolachlor
Ot Spektrumu	Superior broadleaf control	Primarily grasses
Ürün Uyumluluğu	Optimized for brassicas	Limited to maize/soybeans
Direnç Yönetimi	Effective against HRAC 1/2-resistant weeds	Narrower efficacy

Küresel Kayıt Durumu

AB: Approved (Reg. No. 123456789).
Kanada: PMRA-approved for oilseed crops (2023).
MRL'ler:
- Rapeseed: 0.01 ppm (EU)
- Cabbage: 0.05 ppm (Codex).

Paketleme ve Taşıma

Ticari Boyutlar: 1L, 5L, 20L HDPE jugs.
Depolama: Keep in original containers; avoid temperatures >35°C.
İlk Yardım:
- Skin contact: Wash with soap/water immediately.
- Eye exposure: Rinse for 15 minutes; seek medical help if irritation persists.