Also

Small voracious pests, tobacco, onion, wheat and other types of thrips

Small voracious pests, tobacco, onion, wheat and other types of thrips


We are searching data for your request:

Forums and discussions:
Manuals and reference books:
Data from registers:
Wait the end of the search in all databases.
Upon completion, a link will appear to access the found materials.

Thrips are considered malicious pests of agricultural crops and indoor plants.

The tiny insects form large colonies that quickly destroy their prey.

Only in the post-Soviet territory there are about 250 species, and each of them is a polyphage that eats any available plants. More than 2 thousand of these Bubble Legs are known in the world.

The most common types

It is very difficult to distinguish between representatives of different species, most often only specialists can do it. All insects have a long, slender body, ending with a sharp tip. Its length does not exceed 1.5 cm, and for most it is only a couple of millimeters. The legs are adapted only for running, the sucking-type oral apparatus. The wings are not wide, transparent.

Typical body coloration - black or dark brown, it is observed in the vast majority of adults.

The larvae molt several times, constantly changing color initial pale yellow to dark red... The nymph (last stage) is practically indistinguishable from the imago, only the wings are absent.

Wheat

It can feed on many plants, but cereals, both cultivated and wild, are favorites. In addition to wheat, they eat rye, buckwheat, barley, corn, oats, tobacco, cotton.

If there is no favorite food nearby, wheat thrips can attack weeds.

The color is always dark - black or brown, the legs and antennae are yellow. Female length up to 2.5 mm, the male is half as long.

The life cycle is longer than that of other thrips species, and fertility is less. Standard masonry - up to 25 light red eggs.

IMPORTANT! The mass appearance of adults occurs when cereals begin to spike.

Tobacco or onion

Almost omnivorous insects, willingly eating even tobacco, garlic and any kind of onion... The favorites of the same diet are all nightshade and umbrella crops, many flowers.

Onion thrips like to settle in greenhouses, greenhouses and greenhouses, where it is almost impossible to withdraw it completely.

Unlike other varieties, adults of tobacco thrips are colored in light shades - beige, yellow, light brown.

They develop much faster than wheat and other thrips, as many as 7 generations are born per season. Does not tolerate heat, dying at 38-42 °.

Variegated

As the name suggests, it is a very omnivorous insect. He parasitizes on vegetables, berries, fruit trees and shrubs, indoor flowers.

The body color is predominantly brown, on the wings there are darkening, diluted with a cream strip at the base.

The female hides eggs inside the stalks of food plants, sometimes in sepals, where they are difficult to find. Although not a quarantine pest, this species can cause serious damage in greenhouses and greenhouses.

IMPORTANT! An insidious pest often damages the forming ovary and inflorescences! It is recommended to get rid of these as soon as possible!

Decorative

A very thermophilic parasite that can live exclusively indoors.

He attacks for indoor and greenhouse plants, quickly leading them to death. Has no preferences, sucking the juices from all ornamental cropscoming across on the way.

Females are very small, grow up with difficulty up to 1.5 mm, males are even smaller. Despite the fact that they do not hide at all on the inside of the leaves, living openly, it is not easy to see them due to their microscopic size.

The body is very dark in color, black or dark brown, the head, abdominal segments and wings are cast in bronze.

IMPORTANT! This species does not leave for wintering, as it always lives in a warm place. In the cold period, it lives in heated rooms - barns, greenhouses, greenhouses. Therefore, it never stops its wrecking activity.

Thrips in indoor floriculture

Houseplants can be severely affected by thrips infestations. They stop developing, stop blooming. The leaves become covered with necrotic areas, dry and fall off. The most delicious for many species are orchids, ficuses and violets.

Saintpaulia's pubescent leaves are attacked decorative and onion views. They can easily be confused with sciarid flies. The main distinguishing feature of the attack is thrips - flower petals stained with pollen... It spills out from the stamens, in which pests are in charge.

Orchid thrips are frequent guests, as this is one of the pest's favorite treats... They are attacked decorative, tobacco, rosy, dracaena thrips... Multiple silvery spots appear on the leaves - bites and necrosis, which gradually turn black.

Ficuses amaze dracaena, decorative and california thrips... Not only do they suck out juices, necrotizing foliage, but they also carry viruses. Ficuses affected by viral diseases can no longer be cured.

Thrips on ficuses and violets, photo:

California

The most harmful and dangerous species, which is ranked among the quarantine parasites. It is very problematic to destroy it, and in large greenhouse farms it is almost impossible. Therefore, it is very important to comply with all measures aimed at preventing its occurrence.

Read more about the California thrips in the article.

There are very few external signs of difference between thrips, many species are similar to each other like twins. And determining the species is not as important as choosing the right means to destroy these omnivorous pests.

In conclusion, we bring to your attention a video about thrips on violets:


Watch the video: How to Grow Cabbage. Cabbage Farming and Cabbage Harvesting (June 2022).


Comments:

  1. Jamarcus

    I am very obliged to you.

  2. Tomuro

    This is a great idea

  3. Connal

    With talent...

  4. Shale

    I congratulate you, your thought is very good

  5. Micheal

    Let them be!



Write a message