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Which Is Better - Copper Vs Sulfur Fungicide

Which Is Better – Copper Vs Sulfur Fungicide?

If you are wondering which fungicide is better between copper vs sulfur fungicide, we will look at both in this article and see which one is best.

In the field of agriculture, the application of fungicides is very important for the prevention and control of diseases. Fungicides can be divided into three main categories: chemical, biological and physical. In this article, we will talk about the two most widely used fungicides in the world: copper vs sulfur fungicides.

Copper Fungicide
Perlite Vs. Pumice
Perlite Vs. Pumice

Copper fungicide is a kind of chemical fungicide, and it is used to prevent and control diseases caused by fungi. The active ingredient of fungicide is copper.

This fungicide is not harmful to human health, but it has some disadvantages. For example, a copper fungicide cannot be applied in late spring and early autumn because the soil is too wet. Moreover, a copper fungicide cannot be applied to crops with high water content.

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Most Effective And Safe Way Of Using Copper Fungicide

  • Apply Copper Fungicide in the Form of Powder or Granules – The copper fungicide should be applied directly to the crop plants at a rate of 2-3 kg/ha. You can spray it on the whole crop but it is better to apply it to the seedlings and leaves of the plants. If you spray it on the soil, the fungicide will not penetrate the roots.
  • Spray the Fungicide On the Crop Plants After Harvesting –  It is better to spray the copper fungicide on the crop plants before harvesting them. In this way, the fungicide will penetrate into the roots and stems of the plants. Copper fungicide has been proved to be very effective in controlling downy mildew, powdery mildew and rust diseases. It is also effective in controlling gray mold diseases.

Sulfur Fungicide

Sulfur fungicide is also a kind of chemical fungicide. It is widely used in the field of agriculture. The active ingredient of the fungicide is sulfur, which has a strong antibacterial effect on the microorganisms that cause plant diseases.

Sulfur fungicide is also known as a bactericide, bacteriacide, or an anti-bactericide, and it works by inhibiting the growth of bacteria. It can be applied to crops directly or through seed treatment. The common types of sulfur fungicides are benzoic acid, naphthenic acids, and phenols.

Bonide Sulfur Plant Fungicide Dust, 4 lbs

As mentioned above, the sulfur fungicide is more effective than the copper fungicide. However, sulfur fungicide has some drawbacks. It is hard to apply, and it cannot be used in late spring and early autumn.

With the development of modern agricultural technology, farmers are increasingly relying on pesticides to control plant diseases. To increase the yield of crops, farmers have to select suitable pesticides to use according to the needs of crops. However, pesticide selection is very difficult for them.

Differences Between Copper Vs Sulfur Fungicide

Having learned about each of these fungicides, let’s learn the differences they carry. Their differences include

  • Copper fungicide is used to prevent diseases caused by fungi while sulfur fungicide has a strong antibacterial effect on all the microorganisms that cause diseases
  • In addition, copper fungicide is not toxic to humans while sulfur fungicide is very harmful to human health.
  • Copper fungicide is a broad-spectrum fungicide which means it can be used to control both seed and foliar diseases. On the other hand, sulfur fungicide is less effective in controlling foliar diseases but it is very effective in controlling seed diseases.
  • Sulfur fungicides are more expensive than copper fungicides.
  • Copper will give better control of powdery mildew on brassica species, sulfur will be more effective on apple scabs, and both will be useful for other diseases.
  • Sulfur is the most widely used fungicide in vegetable production, but copper is more commonly used in fruit production.
  • The main difference is that sulfur is not applied in the fall but copper is applied in the fall.
  • Also, sulfur fungicides can be used on most crops but copper fungicides must be applied to certain crops at specific times.
  • Sulfur fungicides are very effective against downy mildew on apple, pear, and other stone fruit trees. Copper fungicides are most effective for powdery mildew and anthracnose of lettuce.

Copper Fungicide

Similarities Between Copper Vs Sulfur Fungicide

  • Both sulfur and copper fungicides have a fairly narrow spectrum of activity against fungal pathogens.
  • Both will be useful for most crops but they are no fungicides that can be used in every situation.

When choosing fungicides, it is important to consider the disease you are trying to control, the crop you are growing, and the fungicide’s mode of action.

In Conclusion

Copper vs sulfur fungicide are two fungicides used for different purposes but are successful in eliminating diseases from your plants. Fungicides have a wide range of different properties and each type has its own characteristics. Copper is a very broad-spectrum fungicide that can be used to control a variety of diseases including powdery mildew, leaf spot, gray mold, and downy mildew. Copper is also a fungicide that is safe to use around children. Sulfur is a specific fungicide that is used to control downy mildew on tomatoes and grapes.


Is copper or sulfur a better fungicide?

Copper fungicide is considered a better fungicide since its easy to apply on plants.

Can I mix sulfur and copper fungicide?

No, you cannot mix them together. They are very different. Copper works as an acid, and sulfur works as a base. The acid will react with the base, creating a salt. If you mix these two, the copper will not be effective anymore, because it is reacting with the sulfur.

When should you not use a copper fungicide?

You should never use copper fungicide on green fruit. This is because copper can cause blisters. Copper also has a tendency to make fruit taste bad when applied during the last few days before harvest. It is important that you do not use copper fungicide on fruit after harvest.

Is sulfur a good fungicide?

Yes, sulfur is very effective for preventing and controlling diseases on fruit. It is very effective against powdery mildew and gray mold. It is also good for brown rot, and black spot. However, sulfur is not as good at controlling downy mildew, which is one of the most common diseases of apples.