Japanese Knotweeds Versus Aphalara Itadori: The Encounter In The UK


Have you been constantly upset by the time and energy, let alone the cash, that you invest in completely removing Japanese knotweeds from your backyard, only to see the area green and healthy with fresh sprouts a few days after? This weed has been a great dilemma in United Kingdom for sometime. Not long after its introduction in the 1800’s, the plant has invaded many of UK’s land area and wastelands. It has caused a real threat to the native plant species since they are highly resilient to most methods of control. They crowd out native species and lower the species variety in the region.

There have been quite a lot of ways used to handle the spread and growth of the invasive Japanese knotweed, from pesticides to carefully eradicating the plants to adding its real parasite, Aphalara itadori. These psyllids, as they are named, are sap-sucking insects which are likewise belonging to Japan from where the weed also came from. Aphalara itadori is called jumping plant louse. The premeditated introduction of this psyllid is backed up by scientific research from CABI but not everyone are thrilled to the idea.

The research has spanned some six years, analyzing more than two hundred preventive measures and has concluded that the jumping plant louse is the perfect alternative among all these. It further lays down the explanation that renders this psyllid the best choice, which is the fact that it is a sap-sucking insect, thus it is host exclusive. This is to pacify arguments that the insect might transfer to native plants as soon as it is introduced into the ecosystem. The insect will slow down its growth and render it less aggressive. The insects will suck the sap from the plant during their nymph stage. These may not completely put an end to the deleterious weed. The purpose is to render them more manageable and render the preventive process more maintanable in due course in addition to more economical. An astounding total of about 1.6 billion pounds a year is exhausted on getting rid of Japanese knotweed.

The addition of a foreign species into United Kingdom poses a biological threat, many skeptics proclaim. What happened to Australia after using cane toads being an organic pest control for beetles in 1935, only to become an environmental threat today, may likewise happen to the UK. Another case was the addition of harlequin ladybirds in several European countries for ecological control yet it only needed them a short time to go across the English Channel and placed the British ladybirds in danger. Japanese knotweed removal by the addition of the jumping plant louse is going to be a lengthy deliberation. The showdown of these two, the Japanese knotweed and its arch rival, the jumping plant louse, will not happen soon.

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