Skip to Content

How To Avoid Catching Potato Blight? Tips You Need

This article may contain affiliate links. We get paid a small commission from your purchases. More Affiliate Policy

Potato blight is a problem for many gardeners. The disease spreads via airborne spores and thrives in moist, humid conditions. The first signs of the disease are small, dark spots on the potato’s skin that eventually turn into black sunken areas when the potato is fully infected.

There are many ways you can help prevent potato blight from happening and stop its spread. You should avoid planting potatoes in the same place year after year, as this will make the soil more susceptible to blight. Also, one should keep plants healthy by providing them with enough water and fertilizer.

Table of Contents

People have tried to find ways to cure potato blight for centuries, and gardeners can find many tips to avoid it from happening. There are treatments for blight. It is necessary to identify potato blight before it does any more damage.

How Can You Tell if There Is Potato Blight?

Some signs are indicative of this disease. First, you should look for any signs of green growth or spots on the skin. If you notice it where a plant is trying to sprout, then it could be blight. It’s also possible that there will be browning on the potatoes or streaky colors.

Picture of potatoes with potato blight

Potatoes are susceptible to a fungal pathogen. It can cause the leaves to turn black and wither while the potato becomes soft and waterlogged. When looking for this condition, you should find a few telltale signs.

The spots will be wet and slimy to the touch while also having white tubercles on their surface. The other sign of this condition is that these patches of potatoes will have a grayish or muddy coloration and a thick, dark-colored outer layer that may still be moist in some places.

What Are the Causes of Potato Blight?

The first step to solving potato blight is understanding what causes it.

Potato blight is a fungal disease that affects potatoes. It can cause severe losses in potato crops. Blight is in areas with cool, wet springs and hot, dry summers.

Picture of Potato leaves showing the first signs of potato blight

The first signs are purplish-brown spots on the leaves, which can spread if left untreated. The fungus that causes the disease invades through wounds on the leaves or cracks in the skin of potatoes. Infected potatoes will have dark patches on their skin or internal tissues and a white mold growing. Eventually, they will rot and turn into a pulp.

The fungus spreads from infected plants to healthy ones and can destroy entire crops and fields in just a few weeks. The spores of the fungus that causes potato blight can travel on wind currents or via insects from another field or even another country. The spores can also spread through soil during plowing and harvesting if there are roots of infected potatoes left on the soil surface.

What Does Potato Blight Look Like?

The fungus can enter a potato plant through the soil or water and grow on the leaves of the plants. It then enters the plant through its roots and enlarges in its tubers, where it breaks down cells and causes them to turn into a mushy brown substance.

Some signs of this disease are blackened leaves, wilted leaves, leaf spots, and dark lesions on potato skin. However, these signs are sometimes hard to notice since they may be small or cover just one side of a potato.

Phytophthora infestans fungi cause potato blight. The fungi produce spores that travel in water droplets and rain. It mainly affects potatoes when the weather is wet or humid.

The leaves will become crinkled and brown. It will also show signs of yellowing and wilting on the undersides of the leaves. The plant will stop growing and produce fewer tubers. You may notice some rotting potatoes in your garden or a pile of potatoes in your storage area.

What You Should Know About Potato Blight

When a plant disease like potato blight takes over, it can be hard to find the correct treatment. However, you can reduce the risk of this disease occurring in your plants in many different ways.

It all starts with prevention. You can protect your plants from plant disease using techniques like crop rotation or planting different crops near each other. If prevention doesn’t work, it’s time for treatment.

There are many ways you can treat plants from potato blight, which usually depends on where you live and what crops you grow. Regardless of your region or crop type, potatoes are one of the most popular crops, so you’ll need to know how to deal with them at some point.

You can treat potato blight with the appropriate treatments. Some of these treatments include:

  • Biological controls (fungicides, insecticides, nematocides)
  • Chemical controls (insecticides), and
  • Physical management (removing all vegetation within 50 feet of the diseased plant)

Many biological factors can cause plant diseases, including fungi or other microorganisms. Environmental factors may also trigger potato blight disease. When a plant is afflicted with a disease, it will have visible signs in the form of lesions, wilting leaves, etc., depending on the type of disease.

The most important way to prevent these diseases from taking hold is to avoid them in new plants planted or seeds you bought.

These measures include keeping plants far apart and maintaining healthy soil conditions to discourage pests and disease-causing organisms from establishing themselves in your garden.

How to Treat Potato Blight in your Garden

Potato blight can destroy the crop if not treated. If you want to help prevent the spread of this disease, it is essential to know how to properly care for your potatoes to keep them healthy and boost their yield.

A garden is a fragile ecosystem that requires a balance of plants, insects, and animals to thrive. However, sometimes diseases infect gardens and need to be treated by a gardener. Potato blight is one of the most destructive plant diseases. It infects potatoes by attacking the leaves and stems, causing them to turn black and die off.

The first step in treating potato blight is to remove the affected plants from the ground. Make sure you remove any diseased parts and dispose of them in cardboard or paper bags away from your garden and compost pile.

How Does Potato Blight Affect Yield?

The potato blight affects yield in many ways. Some ways are more significant than others in terms of impact on growth and include:

  • Early infection of plants
  • Reduced growth
  • Shorter roots
  • Fewer tubers
  • Higher mortality rates

How To Prepare Your Potatoes Against Blight

Potatoes are one of the most important crops and food sources for more than a billion people worldwide. Many factors contribute to the success or failure of potatoes. One of these is blight, a fungal disease that can cause damage to vines, leaves, tubers, and fruit in the field. There are many ways to prepare your potatoes for this risk.

The first step is to remove the infected leaves from the plant as soon as you discover them. The gardener needs to do it with a light touch and should do it before any white spots have formed on the leaves. The second step is to use sprays that contain neem oil, copper, or other substances that can kill spores. Gardeners should apply the spray in heavy misting waves rather than in droplets.

For many more tips on growing potatoes, check out the video below

Protecting Your Harvest From Potato Blight

Potato blight is a disease that can have severe consequences for the harvest of potatoes. It can cause the potatoes to rot and become inedible. There are many ways to protect your harvest from potato blight. One way is by using crop rotation methods.

Another way is by using selective breeding. It is a process where you select desired traits in potatoes before breeding them again and repeating the process with the rest.

The third solution to potato blight would be to use fungicides like copper sulfate, which will kill any fungi on or near your potatoes that may cause damage or infection. It will not kill off all fungi in your garden soil, so you still need to rotate crops every year or so and use crop rotation methods if possible.

To protect your harvest from potato blight, you need to make sure your soil is healthy. One way to do this is with high-quality nitrogen and potassium fertilizer.

You should also add mulch or compost near your plants to keep moisture levels high in the ground so that it’s harder for fungal spores to infect your potatoes.

To protect their crops, farmers should try to plant different potatoes with different resistance levels to prevent problems from arising.

They should also leave a great distance between crop rows to reduce the chances of infection.

Furthermore, they should keep their potatoes dry by using mulching or plastic sheets to avoid having them sit in water for long periods.

Tips To Prevent Potato Blight In Your Garden

Potato blight is a fungal disease that affects the potato plant.
To prevent this disease from spreading, you should dispose of any infected material, such as potatoes, roots, and plant debris. Keep your garden free of weeds, providing an ideal environment for Phytophthora infestans to grow.

It can be controlled by following some preventative measures:

Plant resistant varieties

Many cultivars are resistant to the blight diseases of potatoes.

Keep plants dry

Watering them at two-day intervals or less reduces fungal development on the leaves.

Rotate crops

It is essential to keep potatoes away from other members of the Solanaceae family (tomatoes, peppers, aubergines) to avoid any disease development in one family due to cross-pollination.

Avoid planting potatoes beside these plants.

Do not plant potatoes next to where tomatoes, peppers, eggplant, or other nightshade plants have been growing or will be growing soon.

Apply fungicide

You will find many fungicides available on the market that you can use on potato crops.

Potato blight management tips:

  • Keep plants healthy from root up to fruit down.
  • Make sure your plants have enough water, nutrients, and sunlight.
  • Be observant, and do not wait until they are diseased to take action!

Conclusion on how to avoid catching potato blight

Knowing the best ways to manage potato blights once they hit your garden is essential so that you can get back to growing healthy plants.

Some preventative measures include planting a healthy crop of potatoes in another garden area, rotating crops, and reducing the amount of nitrogen in your soil.

Suppose you are wondering if there are potatoes that are blight resistant. I wrote an article about varieties of potatoes that are blight resistant. You can read it here.

If you found value in this article, subscribe to the blog for all future updates. You can do that below.

[mailerlite_form form_id=5]