The magnitude-9 earthquake hit the Pacific coastal areas of northeast Japan, triggering an enormous tsunami that led to explosions in the Fukushima nuclear power plant.
Radioactive substances above the safe limit have been detected in 11 types of vegetables grown in Fukushima prefecture, Kyodo News reported Wednesday.
The vegetables include broccoli, cabbage, spinach and the locally-grown "komatsuna" leafy vegetable, the health ministry said.