0
Why is the Japanese knotweed only a problem in the UK and not in Japan?
Wiki User
∙ 10y ago
That it is non-native and that its cultivation is uncontrolled are reasons why Japanese knotweed is a problem in the United Kingdom but not in Japan.
Specifically, the plant in question (Fallopia japnica) can be found growing natively in Japan. It functions as a food source through its honey production and rhubarb-tasting young stems. It also is an alternative to grapes in promoting well-being. It therefore will be found growing as a cultivated plant whose overgrowth is contained by regular trimming and limited by the presence of its natural enemy, predatory psyllid insects (Aphalara itadori).
A native plant with aggressive, invasive tendencies often can be controlled in its homeland because of predator-prey interactions. The constraints of a natural enemy -- or of use whose realization involves growth-limiting stress, which happens when a plant repeatedly faces controlled burning, spraying and trimming -- may be lacking outside native ranges.
Wiki User
∙ 10y ago
Add your answer:
Earn +20 pts
Is Japanese knotweed dangerous?
No it is not it is a source of anti oxidents and is used in Japan as food!
Does Japan have universal suffrage?
No, only Japanese citizens are allowed to vote in Japan.
What country is Japan in?
One. Japan. It is an island. Japan is made of 1000s of islands.
Hideki tojo favorite books?
Japanese book i think what else he is a japanese person, he only knows japan language only
How do you be a Japanese?
Well I guess the only official way to be Japanese is to be born in Japan, there is no other scientific way if becoming Japanese after you are born.
How many mountains in the Japanese mountains?
there are only 4 mountains in japan
Who is the president of japan in 2010?
Japanese don't have president, they only have Prime Minister. Yasuo Fukuda is Japanese Prime Minister.
Does anime only come from Japan?
Well anime is the Japanese abbreviated pronunciation of "animation." Anime is what you call cartoons from Japan.
Who was the saint who was canonized by the Japanese?
The Japanese can not canonize saints. Only the pope can do that. However, people from Japan can suggest people for canonization to their bishops.
Are there any games based on 'Fairytail'?
Three of them. But as far as i know they are only in Japan and/or japanese.
Are there any more Pokemon FireRed games out?
only leafgreen and in japan is waterblue too but its only in Japanese version
Does Japan eat dogs and cats?
A minority of Japanese eat whales. Japanese people themselves do not eat dogs, but some immigrants to Japan from other countries do. Dog meat only exists in Japan as imports to serve such immigrants.
