Quantum·Macronutrients
Quantum ExtraFos K
Quantum ExtraFos K — a liquid specialized fertilizer with K₂O 250 g/l and P₂O₅ 250 g/l in the form of phosphite for foliar feeding and fertigation of field, fruit, vegetable and berry crops.
Main advantages
- K₂O 250 g/l — drought resistance per the maker
- Phosphite, P₂O₅ 250 g/l — root system growth
- Fruit and berry crops 2.0–3.0 l/ha — the maker's rate
- Fertigation 2–4 l/ha — solution no higher than 2%
- Not under heat stress — the maker's caution
Overview
About this product
Quantum ExtraFos K — a liquid specialized fertilizer with a high concentration of potassium and phosphorus in the form of phosphite for foliar feeding of field, fruit, vegetable, berry and ornamental crops. It contains 250 g/l each of K₂O and P₂O₅; pH 5.0–6.0.
Per the maker, phosphite enhances root system growth, and potassium improves resistance to drought and temperature swings. Rates: cereals and oilseeds 1.0–2.0 l/ha, legumes 1.0–2.5, sugar beet 0.5–1.0, vegetable crops 1.0–2.0, fruit and berry crops 2.0–3.0 l/ha; in fertigation 2–4 l/ha, concentration no higher than 2%.
Do not use on plants with severe phosphorus deficiency or under heat stress.
Application
Rate, timing and crops
- Timing
Fertigation: first application with the first spring irrigation, subsequent ones at three-month intervals or as needed
- Method
Foliar feeding: cereals and oilseeds 1.0–2.0 l/ha; legumes 1.0–2.5 l/ha; sugar beet 0.5–1.0 l/ha; vegetable crops 1.0–2.0 l/ha; fruit and berry crops 2.0–3.0 l/ha
Fertigation on drip irrigation: 2–4 l/ha depending on the crop and the phytosanitary state of the plants; do not exceed a 2% spray solution concentration (2 l per 100 l of water) per application
- Conditions
- Do not use on plants with severe phosphorus deficiency or under heat stress
- Crops
- CerealsOilseed cropsLegumesSugar beetVegetable cropsFruit and berry cropsOrnamental crops
Figures from the manufacturer, Quantum. Source page
Specifications
Nutrient composition
| Brand | Quantum |
|---|---|
| Type | Phosphorus |
Composition
| |
| Form | Liquid |
| Density | 1.24–1.29, unit not stated(kg/l in the specifications) |
| pH | 5.0–6.0 |
| Application | Foliar, Fertigation |
| Target Crops | Cereals, Oilseeds, Legumes, Sugar Beet, Vegetables, Fruit crops, Berry crops, Ornamental |
| Manufacturer | НВК «Квадрат» |
| Packaging | 20 l; 5 l |
| Origin country | Ukraine |
Vendor offers
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Questions & answers
What farmers ask most
- Rates depend on crop, prior history and soil analysis. This is a straight fertiliser, not an NPK complex at 150–300 kg/ha. An agronomist sets the dose from nutrient offtake.
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Product specifications are compiled from publicly available manufacturer sources and are provided for guidance only — confirm all details with the vendor before purchase. Brand names, logos and trademarks are the property of their respective owners; a listing on ADAM does not imply affiliation, sponsorship or endorsement.