Many bugs and insects are voracious feeders capable of surviving harsh climatic conditions. They multiply swiftly, exceeding harmful thresholds and eventually harming human health and the environment in the long run. Those that feed on plants are among the most well-known, causing irreversible damage to humans, crop yields, and farm animals. Every year, farmers all over the world face unique obstacles in keeping their agriculture safe from competing insects and bugs. Destructive pests range from termites, which damage the structure of your home. Pests that feed on plants, on the other hand, are among the worst. Agricultural pests can devastate not only gardens but also entire crops that sustain hundreds of people. Farmers fight a variety of pests every year to ensure that their crops, vegetables, and grains grow successfully. Here are some of the most damaging agriculture bugs and insects:



When aggressive swarms entered several Indian regions, destroying crops and wreaking havoc on agriculture, the short-horned, little beetle, known for consuming nearly anything that comes their way. Some locust species, such as the desert locust, can cover up to 460 square miles. And contain between 40 and 80 million insects in less than half a square mile. Consider the devastation they could bring if left unchecked. In the agricultural industry, locusts are well-known. These pests have been around since the 2000s BC. They were responsible for the annihilation of some of the world’s early crops. They are still a threat to practically every variety of plants today. When the conditions are exactly right, locusts form massive swarms that eat the plants in their immediate vicinity. And, because they can eat their own weight in plants every day, the devastation is massive.

Japanese beetles

The six-legged beetles are an increasing hazard to a stable food supply. A range of fruits and berries, as well as vegetables such as asparagus, soybean, sunflower, sweet corn, and others, are at risk. The pests feed in groups, consuming plant foliage and affecting the veins of the leaves, finally decimating the plants. Although they have a short life period, ranging from four to six weeks, they reproduce swiftly, and as long as they are alive, they can cause severe damage. Japanese beetles aren’t pests in Japan. These beetles eat about 300 different plant species and often graze in groups. In June, they emerge from the ground and begin their quest for food. They only feed for 4-6 weeks, yet that is enough time for them to cause severe damage.

Mormon Crickets

Mormon crickets received their name from the fact that they infested the crops of Mormon pioneers in the Salt Lake area in the mid-1800s. These pests have sharp, powerful mandibles and favor shrubs and grasses. They eat grains, field and fodder crops, and fruit trees as well. Mormon crickets can be found in “outbreaks” that last anywhere from 5 to 20 years when the conditions are exactly perfect.

True Bug

The phrase “true bug” can refer to any of the 50,000-80,000 insect species that exist, however aphids and whiteflies are the most common true bugs. These pests are known to tap into plants and feed on their sap, weakening them (especially when large numbers of these real bugs attack), but they also munch on their stalks and flowers. While they are destructive on their own, they can also carry illnesses and dangerous viruses to plants, causing considerably more damage.

Corn Rootworm

Corn is a hugely important crop in the United States (particularly in the Midwest). These pests emerge from the ground in June and July. It resembles a beetle more than a worm and starts eating corn silk and leaves. Furthermore, they lay eggs across the crop instantly, so farming corn on the same ground year after year exacerbates the problem. Corn rootworms have just recently become an issue for farmers due to their pesticide tolerance.

Colorado Potato Beetle

Because of its chemical tolerance, the Colorado potato beetle has been a problem. In fact, in just 50 years, it has evolved resistance to more than 50 insecticides, making the damage it does unmanageable. The beetle feeds on potato crops, as its name implies, but they can also eat tomatoes and eggplants. Adults and larvae both prefer plant foliage, but they can also eat stems and fruit or vegetables. If left unchecked, these bugs can quickly destroy entire crops.

Stink Bugs

While you may consider stink bugs to be a nuisance in your home, they pose a serious threat to crops. They eat plant stems and leaves, as well as fruit and vegetable juices such as apples, peaches, berries, peppers, and beans. They can also eat pecans, sorghum, and cotton, drastically reducing crop output in all of these crops.


Aphids, sometimes known as ant cows or greenflies, are little sap-sucking soft-bodied insects that can greatly weaken plants, affecting overall growth and eventually causing apparent damage. They feed in groups, proliferate swiftly, and eat a broad variety of plants, including bean, cabbage, potato, green peach, and others. Curled leaves, reduced development, and slow drying and death of young plants are all symptoms of a severe infestation. Aphid honeydew falls on the lower leaves, causing black sooty mould to grow, reducing photosynthetic activity.

Aphids are slow-moving insects that are most typically found in the spring and autumn. They can be winged or wingless. Aphids congregate at the tips of the shoots, sucking the sap from the plant and diminishing its vigour. Aphids can also spread viruses, which reduces yields and quality. Biological control will be provided by lacewings and ladybugs, among other natural enemies. Control with sprays like garlic extract, horticultural oils, and horticultural soaps if necessary. Sprays containing pyrethrum and piperonyl butoxide can also be used, but crops can’t be harvested for one day after they’ve been applied.


Weevil Adult beetles eat leaves and tree trunks, while grubs eat roots, wilting and killing plants. Coconut, jute, cotton, sorghum, pearl millet, and maize are among the crops that have seen yield losses ranging from 10% to 48%. Weevils are pests in some cases, such as garden and vegetable weevils. Asparagus, beetroot, carrots, parsnips, peas, potatoes, rhubarb, silverbeet, and spinach stems and leaves. It may be attacked by the 10mm adults at night. When plants are water-stressed, they are more vulnerable. Wrap Dacron quilt wadding around the base of plants to reduce numbers. The weevils’ legs become entangled in the wadding. Aluminum foil or horticultural glue can be used to wrap the stems of plants as an alternative. Adult weevils pupate in the soil, and both of these strategies trap adult weevils as they move up into the foliage, disrupting the breeding cycle.


Cutworms hide in the soil during the day and attack plants at night. They cause the plant to collapse by damaging the stem of immature seedlings at the base. Bacillus thuringiensis is a biological insecticide that exclusively kills caterpillars and must be treated every five days or after rain or overhead irrigation. Spinosad is a low-toxicity chemical with a translaminar movement, which means the active ingredient moves inside the leaf after the spray has dried, making it resistant to rain and sunshine.


Moths and butterflies have larval forms called caterpillars. They are usually hairless, have a long cylindrical body that is 10–50mm in length, and come in a variety of colors. Caterpillars can eat leaves, branches, flowers, fruits, and roots, among other things. The huge cabbage white butterfly’s green caterpillars and the small diamond-back (cabbage) moth’s green caterpillars can severely harm the leaves of Brassica plants like broccoli, cabbage, kale, and cauliflower. The eggfruit caterpillar eats aubergine, and the native budworm eats the fruit of a variety of crops, particularly capsicums, tomatoes, and sweet corn. These fruit pests are difficult to eradicate, and early treatment is necessary to eliminate the caterpillars before they can enter the fruits. Other caterpillars eat the roots and stems of the plants. Caterpillars of the potato moth will mine potato leaves and bore them into potato tubers.


Whiteflies are tiny sap-sucking insects with a diameter of 1.5–2.0mm that can harm plants cultivated in the open and in greenhouses. In the spring and autumn, the damage is the most severe. When startled, the adults resemble little moths and fly in great numbers. The early stages don’t have wings and resemble scale insects. Whiteflies are eaten by insects such as lacewings, ladybirds, and hoverflies. Pesticides might be tough to handle when it comes to whiteflies. Sprays containing garlic extract or pyrethrum and piperonyl butoxide are effective. Horticultural soaps and soapy water may also help to cut down on the population.


Mites have eight legs compared to insects’ six, and are significantly tiny than most insects, measuring less than one millimeter in length. They are most active during dry weather, and water sprayed beneath the leaves will help to minimize their numbers. Control mites with a horticultural soap sprayed beneath the leaf as soon as the mites appear. The 10mm adults may attack asparagus, beetroot, carrots, parsnips, peas, potatoes, rhubarb, and silverbeet stems and leaves at night.


When a cotton planter sees a bollworm, it sets up alarm bells. However, they are known to spoil sunflower, chickpea, pigeon pea, soybeans, peanuts, and, most notably, tomatoes. They will multiply if left unregulated or uncontrolled once found, causing significant damage to harvest and productivity. By digging into the shoot, the larva causes it to droop and dry out. Later, buds, blooms, and bolls are injured, and a larva may travel to fresh parts to attack them. Cotton fields are known for losing a lot of early-formed flower buds due to the bug. Cotton, chickpea, pigeon pea, sunflower, and tomato are among the crops affected, with output losses ranging from 20 to 90%.

To know more about agriculture insects and bugs visit page


  • Fruit and shoot borer
  • Stem borer
  • Corn rootworm
  • Root borer
  • Thrips

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