The greenhouse whitefly is considered one of the most aggressive harmful insects in sheltered soil and indoor gardening. Hothouse plants throughout Russia suffer from it, including even the Arctic. However, few people know that in addition to chemical measures to control whiteflies, there is a safer, but no less effective biotechnological way to clean the greenhouse from these unwanted guests.
For its successful application, it is enough just to study the basic habits and habits of insects and turn them to your advantage.
Take, for example, their reaction to the color of surrounding objects. If you hang glue traps harmless to humans of a strictly specific shade in a greenhouse, then adult individuals of the greenhouse whiteflies will begin to fly around in large numbers and inevitably fall into a sticky trap.
On sale, you can find yellow glue traps (LCDs) of two varieties: 25 x 50 centimeters in size for large industrial greenhouses and 12 x 20 centimeters in size for personal greenhouses and greenhouses.
Such baits are made from environmentally friendly components – paper, paint, and glue. Their surface is impregnated with a harmless entomological glue that never gets on plants and retains the necessary stickiness for a long time. In addition, they are completely inexpensive.
Usually, whitefly flies into a greenhouse and any closed room through ajar doors, windows, ventilation slots, and is also carried on potted seedlings. Therefore, close to these places and it is necessary to place traps every 30-40 centimeters.
Extend the twine over the ceiling of the greenhouse and hang the baits so that their lower edges touch the tops of the plants slightly, or lower them by 7-10 centimeters. It is also advisable to raise the adhesive strips from time to time so that they are constantly located at the level of young leaves, where the maximum number of pests accumulates. For densely leafy crops such as tomatoes and cucumbers, you can use horizontally oriented and wide greenhouse traps. But to combat whitefly on seedlings, a fairly narrow variety of LCDs is quite enough.
If mostly ornamental crops grow in your greenhouse, it makes sense to distribute the traps evenly throughout the room with a distance of one or two steps between them and at different heights.
And one more little tip: do not remove traps throughout the summer. They can be removed if the glue covering them dries out, or they are completely covered with whiteflies, dust, and other insects.
With many pests and a high temperature (above +27 degrees), it is recommended to periodically shake greenhouse plants, thereby forcing the butterflies to rise into the air. Insects that left the leaves swarm for a minute or two and then go straight to the traps.
In addition to the LCD, if possible, a whitefly can be released into the greenhouse – the Ankara, which eats its larvae with pleasure.
Of course, do not forget about such simple preventive measures as regular weed picking, which the whitefly likes to settle on, as well as a thorough inspection of purchased seedlings and adult seedlings before they are placed in a closed ground construction.
Aphids often settle on cucumbers in a greenhouse. Heat, moderate humidity, and the absence of wind make the greenhouse a real haven for this pest. How to deal with aphids in greenhouse cucumbers, read the article – ” We fight the pests of cucumbers in the greenhouse .”