🌿 Labrador Extra 50 EC 1L (Chizalofop) – selective grass herbicide
Labrador Extra 50 EC is a selective post-emergence herbicide (EC) for controlling monocotyledonous weeds in vegetable, fruit, and arable crops. Developed by Ciech Sarzyna, specially for controlling couch grass in beets as well as blackgrass and ryegrass in winter oilseed rape; additionally broadly usable in numerous small-scale crops (strawberry, carrot, onion, bush bean, cabbage, etc.).
🌱 Why Labrador Extra?
✅ Post-emergence application – flexible timing from early stages
✅ Highly effective against grasses: millet, wild oat, annual meadow grass, volunteer cereals, blackgrass, couch grass
✅ Broad crop approval: winter oilseed rape, sugar beet (production areas), potato + many small crops
✅ Flexible dosing – adaptable to weed type/development (economical)
✅ EC formulation – easy dosing and mixing
⚗️ Active ingredient & uptake
✅ Chizalofop-P-ethyl – 50 g/L (5.42 %)
✅ Systemic effect: uptake via leaves, transport to rhizomes/runners, growth stop → yellowing → dying off
🧪 Effect & Symptoms
✅ First symptoms after ~7 days, full effect after 2–3 weeks (weather dependent)
✅ Cool weather slows the effect, without reducing final efficacy
✅ Rain ≥ 3 h after application no effect on efficacy
💧 Application – General
✅ Spraying technique: field sprayer, medium droplet size, 200–300 L/ha (some small crops 200–400 L/ha)
✅ Optimal sensitivity: annual grasses from 2-leaf to tillering start, couch grass at stage 4–6 leaves
🌾 Crops & dosages (excerpt)
Winter oilseed rape
✅ Target: millet species, blackgrass, wild oat, couch grass, volunteer cereals, annual meadow grass, ryegrass
✅ 0.75–2.0 L/ha (max. 2.0 L/ha), 200–300 L/ha, medium droplets
✅ BBCH: Autumn from BBCH 12 (1st leaf pair) to spring before BBCH 50 ("green bud")
Sugar beet (producer areas)
✅ Spectrum as above (grasses/couch grass)
✅ 0.75–2.0 L/ha (max. 2.0 L/ha), 200–300 L/ha
✅ BBCH 12–35 (1st leaf pair to ≤50% row coverage)
Potato
✅ Grasses/couch grass, volunteer cereals
✅ 0.75–2.0 L/ha, 200–300 L/ha
✅ After emergence, after hoeing, before row closure (BBCH 20–34)
Small crops (selection & stages)
✅ Spring oilseed rape: BBCH 12–50 – 0.75–2.0 L/ha, 200–300 L/ha
✅ Fodder beet: BBCH 12–35 – 0.75–2.0 L/ha, 200–300 L/ha
✅ Strawberry: BBCH 11–59 (before flowering) or BBCH 91–97 (after harvest) – 0.75–2.0 L/ha, 200–300 L/ha
✅ Wild strawberry: BBCH 91–97, 0.75–2.0 L/ha, 200–300 L/ha
✅ Onion/Carrot/Celery/Turnip/Radish/Horseradish/Beetroot/Swede/Head cabbage/Bush bean: 0.75–2.0 L/ha, as a rule 200–400 L/ha
✅ Sunflower: BBCH 12–16, 0.75–2.0 L/ha, 200–400 L/ha
✅ Fiber flax/Oil flax/Industrial hemp: BBCH 10–16, 0.75–2.0 L/ha, 200–400 L/ha
✅ White/Black/Sarepta mustard, opium poppy, autumn turnips: BBCH 10–39, 0.75–2.0 L/ha, 200–400 L/ha
✅ Tomato/Aubergine: BBCH 14–29, 0.75–2.0 L/ha, 200–400 L/ha
✅ Soybean: BBCH 11–51, 0.75–2.0 L/ha, 200–400 L/ha
✅ Legumes (not for fodder) – list as specified: BBCH 11–59, 0.75–2.0 L/ha, 200–400 L/ha
✅ Root parsley/Parsnip/Black salsify/Scorzonera: BBCH 10–49, 0.75–2.0 L/ha, 200–400 L/ha
✅ Ornamental plants/School stock: BBCH 12–39 or 50–93, 0.75–2.0 L/ha, 200–400 L/ha
✅ Forestry/Christmas trees/Reforestation: BBCH 12–93, 0.75 L/ha, 200–400 L/ha
✅ Energy/Braided willow, Energy poplar: BBCH 12–93, 0.75 L/ha, 200–400 L/ha
⏳ Waiting times (interval)
✅ Winter/Summer rapeseed: 60 days
✅ Sugar/Fodder beet: 110 days
✅ Potato: 45 days
✅ Strawberry (before flowering): 40 days; after flowering/wild strawberry: none
✅ Carrot/Bush bean: 40 days
✅ Onion (sowing): 42 days
✅ White cabbage/Red cabbage: 87 days
✅ Celery/Beets/Radish/Horseradish/Beetroot/Swede: 56 days
⚠️ Important notes
✅ Do not apply: in drought, on sick/wet plants, at >27 °C, before frost/rain, in wind (drift)
✅ No mechanical soil cultivation 1 month after quackgrass treatment
✅ No overlaps/drift; cleanly separate work strips
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