바퀴벌레 약 냄새
to English
Aphids, colloquially known as plant lice, are small sap-sucking insects of the family Aphididae that cause a distinctive smell when present on plants. These soft-bodied insects have a complex life cycle with alternating sexual and asexual reproduction, so mating is not necessary to continue their life cycle. They feed off several plants, including members of the family Rosaceae, such as apple, pear, cherry, and peach trees.
The smell associated with aphids is caused by the fatty acids they secrete while feeding. Generally, aphids will produce a musty scent that some people find unpleasant when present. In Italy, the smell of aphids is likened to the smell of wet hay left in the sun. In some areas, the smell of aphids has been equated to a cluster of rotting peaches, while elsewhere the smell is compared to the aroma of caramels or candied fruit.
Aphids reproduce rapidly, so if left unchecked they can overtake an entire garden, farm, or orchard in a short time. They secrete a sweet liquid (honeydew) that attracts a variety of secondary pests such as ants, wasps, and flies. They also cause stress to the plants they feed on, resulting in smaller fruit, stunted and distorted growth, and wilting. Additionally, they can interfere with the pollination of fruit trees, resulting in fewer and smaller fruits. To control aphids, gardeners can use insecticidal soaps, neem oil, or horticultural oils, and if the infestation is severe, chemical insecticides may also be used.
Besides the smell and damage aphids cause, they can also spread plant diseases. Some species of aphids are vectors for viruses, including plum pox virus and apple latent spherical virus in apple orchards, potato mop-top virus and tobacco ringspot virus in potato crops, and maple sycamore ringspot virus in maple trees. Aphids also spread mosaic virus, a virus that causes the leaves of trees to turn yellow and become distorted. To prevent the spread of diseases, it is important to control aphid infestations right away.
Along with other methods of control, natural predators can help keep aphid populations in check. Beneficial insects such as ladybugs and lacewings will feed on aphids, and parasitic wasps are also known to attack and lay eggs in aphids. Birds such as robins, swallows, and sparrows will also feed on aphids and can help control aphid populations. Finally, the introduction of certain plants in gardens can also help attract beneficial insects which feed on aphids.
The smell of aphids can be smelt as soon as they arrive on a plant, but it can become more acrid and pungent as their populations increase. As soon as the smell is noticed, it is important to take action in order to control the infestation and prevent the spread of plant diseases. Controlling aphid populations is not an easy task, but with a few preventive measures and the assistance of natural predators it can be done.
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