What Are The Little Bugs on My Corn Stalk Plant

If you have ever grown corn in your garden, you may have noticed small bugs crawling on your corn stalk plants. These bugs are commonly known as corn flea beetles or corn rootworms. Although they are small, they can cause significant damage to your crops if not managed properly. In this article, we will discuss what these little bugs are, how they affect your corn plants, and how to control them.

What Are Corn Flea Beetles?

Corn flea beetles are small, shiny black or brown insects that are about 1/16 inch long. They get their name from their ability to jump like fleas when disturbed. These beetles feed on the leaves, stems, and tassels of corn plants. They also transmit the bacterium that causes Stewart’s wilt disease in corn.

What Are Corn Rootworms?

Corn rootworms are another type of beetle that can cause significant damage to corn plants. They are yellowish-green in color and about 1/4 inch long. These beetles feed on the roots of corn plants, which can stunt growth and reduce yield. They lay their eggs in the soil near the base of the corn plant, and the larvae feed on the roots.

How Do These Bugs Affect Your Corn Plants?

Both corn flea beetles and corn rootworms can cause significant damage to your corn plants. Corn flea beetles can cause defoliation, which reduces photosynthesis and can lead to reduced yield. They can also transmit Stewart’s wilt disease, which can cause severe damage to your crop.

Corn rootworms can stunt the growth of your corn plants by feeding on the roots, which reduces nutrient uptake. This can result in reduced yield or even plant death.

How to Control These Bugs

There are several ways to control these bugs and protect your corn crop:

Crop Rotation

Crop rotation is an effective way to reduce the populations of corn flea beetles and corn rootworms. These bugs can survive in the soil for several years, so rotating your crops to a non-corn crop for at least one year will reduce their populations.

Insecticides

Insecticides can be used to control corn flea beetle and corn rootworm populations. However, it is essential to use them correctly and follow the label instructions. Insecticides can also harm beneficial insects, so it is important to use them only when necessary.

Plant Resistant Varieties

Planting corn varieties that are resistant to corn flea beetles or corn rootworms is another way to control these bugs. These varieties have been genetically modified to resist these pests, reducing the need for insecticides.

FAQ

How do I know if my corn plants have been affected by these bugs?

Look for signs of damage, such as defoliation or stunted growth. You may also see the bugs themselves on your plants.

Can these bugs be harmful to humans?

No, these bugs are not harmful to humans.

How often should I rotate my crops?

Rotate your crops every two to three years to prevent the buildup of pest populations in the soil.

Are there any natural ways to control these bugs?

Yes, you can use natural predators such as ladybugs or lacewings to control these bugs. You can also use neem oil or garlic spray as a natural insecticide.