Product Type
Inorganic copper fungicide-bactericide and Cu deficiency corrector
COBBER S
Broad-spectrum inorganic copper fungicide-bactericide and Cu deficiency corrector with multisite contact activity and high crop coverage.
COBBER S is an inorganic copper fertilizer with fungicidal and contact bactericidal activity, developed for broad-spectrum preventive and curative support against fungal and bacterial diseases while also correcting copper deficiency.
Its consistent sub-micron particle size improves adhesion and plant coverage. The liquid formulation disperses readily in water and remains suspended for longer, helping deliver uniform contact across treated plant surfaces.
Explore the full copper-based bactericides for plants range to compare copper formulations and select the most suitable option for your crop program.
Technical Profile
Key product information at a glance.
Formulation
Liquid inorganic copper formulation with sub-micron particles
Origin
Imported from EU
Key Composition
20% w/v Copper (200 g/L) · 75% w/v Copper sulfate (750 g/L) · 26% w/v Sulfur (SO₃)
Application
Foliar spray
Available Pack Sizes
1 L · 5 L · 10 L
Composition and guaranteed analysis
| Composition | % w/v | g/L |
|---|---|---|
| Copper (Cu) | 20 | 200 |
| Copper sulfate | 75 | 750 |
| Sulfur (SO₃) | 26 | 260 |
Key benefits and agronomic effects
- Provides multisite contact activity against a broad range of fungal and bacterial diseases.
- Combines preventive and curative crop-protection action.
- Corrects copper deficiency while supplying 20% w/v Copper (Cu).
- Consistent sub-micron particles improve adhesion, coverage and disease control.
- Offers excellent crop safety at low use rates.
- Liquid formulation mixes readily in water and remains suspended for longer.
How it works / Technical advantages
COBBER S combines a high copper concentration with multisite contact activity. Its small, consistent particle size increases the treated surface area and improves adhesion and coverage on the crop, supporting more uniform protection.
The formulation contains 20% w/v Copper (200 g/L), 75% w/v copper sulfate (750 g/L) and 26% w/v sulfur expressed as SO₃ (260 g/L). It has a density of 1.4 and a pH of 4.5-5.
Application rates and timing
Application Guidance: Apply by foliar spray using the crop-specific rates listed below. Treatment timing and number of applications are not specified in the source document.
Foliar application
| Crops | Timing | Dose |
|---|---|---|
| Olive | Timing not specified in the source document | 300-600 cc/hL |
| Pistachio | Timing not specified in the source document | 200-400 cc/hL |
| Vegetables | Timing not specified in the source document | 150-180 cc/hL |
| Vine | Timing not specified in the source document | 200-300 cc/hL |
| Citrus | Timing not specified in the source document | 75-125 cc/hL |
| Fruit trees (winter) | Timing not specified in the source document | 250-400 cc/hL |
| Forest nurseries | Timing not specified in the source document | 150-180 cc/hL |
| Herbaceous and ligneous crops | Timing not specified in the source document | 150-250 cc/hL |
Additional technical information
Target problem / deficiency symptoms
COBBER S is intended for copper deficiency correction and broad-spectrum contact control of fungal and bacterial diseases. Target diseases listed include Alternaria, anthracnose, bacterial leaf spot, bacterial soft rot, bacterial spot, black spots, Botrytis, Cercospora leaf spot, Colletotrichum spp., dieback, downy mildew, Entomosporium, Exosporium leaf spot, fire blight, leaf spot, Pestalotia leaf spot, Phomopsis stem blight, Phytophthora bud rot, Pseudomonas leaf spot, scab, Septoria leaf spot, Volutella leaf blight and Xanthomonas leaf spot.
Mixing & compatibility
Compatible with most insecticides and fungicides. Do not mix with acids or alkalis, and do not add amino acids.
Precautions & storage
Shake well before use. Do not freeze.
Frequently asked questions
What is COBBER S?
COBBER S is an inorganic copper fertilizer with broad-spectrum fungicidal and contact bactericidal activity, also formulated to correct copper deficiency.
How much copper does COBBER S contain?
It contains 20% w/v Copper (Cu), equivalent to 200 g/L.
What makes COBBER S different from conventional copper formulations?
Its consistent sub-micron particle size improves adhesion and coverage, while the liquid formulation mixes readily in water and remains suspended for longer.
Which diseases is COBBER S used against?
Its target spectrum includes fungal and bacterial diseases such as Alternaria, anthracnose, Botrytis, downy mildew, fire blight, scab, bacterial leaf spot, Pseudomonas leaf spot and Xanthomonas leaf spot, among others.
Can COBBER S be mixed with other crop-protection products?
It is compatible with most insecticides and fungicides, but it should not be mixed with acids, alkalis or amino acids.
How is COBBER S applied?
It is applied by foliar spray. Rates vary by crop, from 75-125 cc/hL in citrus to 300-600 cc/hL in olive.
What handling precautions apply?
Shake well before use and do not freeze.
What pack sizes are available?
COBBER S is available in 1 L, 5 L and 10 L plastic bottles.
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