Why do my tomatoes have white spots

Powdery mildew on tomato

The spots that we can find on the leaves of plants are very diverse and depending on their shape, color and position may be due to fungi, insects, mites, viruses, bacteria, a nutritional factor or simply an environmental factor such as sun, rain, hail, wind … In today’s article we will see how to know if our plants are suffering an attack and how to fight it.

The first thing we have to observe is whether the origin of the spots is due to an infection or not, so that if we see that the spots are irregularly around the plant and is expanding gradually is that it has its infectious origin but if we see the symptoms generally on all leaves and it is seen that it is not going to more would be a non-infectious problem.

Based on this fact, we can determine if the origin of the spots comes from a virus, fungus, pest, lack of nutrients or environmental factor. Being of viral origin if it is spreading throughout the plant gradually or of non-infectious or non-viral origin if it is seen in a general way in the plant, then it is due to lack of nutrients or an environmental factor such as too much cold.

Plant with white spots name

The two main diseases affecting the tomato plant are downy mildew and powdery mildew. Depending on the humidity, temperature, sensitivity of the variety or the initial inoculum, the tomato will be affected by one or the other disease. Fighting these diseases is possible in organic farming using copper or sulfur fungicides, but here we will see how to make homemade fungicides for tomatoes.

To make this homemade fungicide for tomatoes, mix 1 cup of corn flour with 5 cups of water and let it stand for an hour or until it takes an opaque and milky appearance. Afterwards, remove the solid flour and spray the resulting milky liquid on the tomato plants.

To make fungicides from these oils, you can mix them with other household fungicides, or dilute them in water. Apply them once a day until you notice that there is no more fungus, but remember not to do it during the hours of strong sunlight.

White spots on tomato fruit

A very common problem that can occur when we grow tomatoes is to discover, especially during high temperatures, that our tomato plants are drying out and that, in principle, there is no reason to explain this behavior. We may think that they are lacking water, but in reality more water will aggravate the problem.

It may be that we have downy mildew in tomato, that is, a fungus that is capable of wreaking havoc on this type of crop. It also affects a wide variety of other crops, such as potatoes or eggplants, so we must be very careful with it.

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Powdery mildew on tomato home remedies

Usually due to excessive humidity, so you should check your irrigation system or your watering habits, as you are probably overdoing it.You may also be interested: Eliminate white mold from seedlings

Powdery mildew can be treated in a simple way, although the first thing you have to do is to remove the leaves that have dried completely (if you can, if you have many plants nothing happens, although it is the right thing to do), you can treat it with:You may also be interested in: How to protect your garden from birds.

Powdery mildew is a problem like any other pest but, do not get obsessed and get informed because the best way to fight against pests is to be informed and check your habits in the orchard, because most of the time the problem is ours, not the plants.