Home > The Great East Japan Earthquake > Results of inspections on radioactivity levels in agricultural products (April 1, 2012 to March 31,2013)


Results of inspections on radioactivity levels in agricultural products (April 1, 2012 to March 31,2013)

Test results of radioactive cesium in foods have been made public everyday by the Ministry of Health, Labour and Welfare (MHLW) since March 2011. Following tables show the summary of the test results by each category of agricultural products since April 1st, 2012 in 17 prefectures to which the Government prescribes to conduct the test※. Specific data of each sample tested is available on the webpage of MHLW (http://www.mhlw.go.jp/english/topics/2011eq/). The concentration of radioactive cesium is quantified by Germanium semiconductor detectors or NaI Scintillation Detectors.

 Note: As the maximum limit, 100 Bq/kg applies to General Foods, 50 Bq/kg applies to Milk and Infant foods, and 10 Bq/kg applies to Drinking water including tea infusion under the new regulation as from April 1, 2012.

 ※ Aomori, Iwate, Miyagi, Akita, Yamagata, Fukushima, Ibaraki, Tochigi, Gunma, Saitama, Chiba, Tokyo, Kanagawa, Niigata, Yamanashi, Nagano, and Shizuoka

Results of inspection on radioactivity levels in agericultural products (Since April 1, 2013)

Results of inspection on radioactivity levels in agricultural products (March 11, 2011 to March 31, 2012)

Arable and Horticultural crops (April 1st, 2012 - March 31, 2013 )  


(Unit:Number of samples)

Total number of reported samples

Within the maximum limit (100 Bq/kg for general foods)

Above the maximum limit (>100 Bq/kg)
≦50 Bq/kg (including "Not detected") 50 Bq/kg<
≦100 Bq/kg

10.4 million

10.4 million

2,095 84



Other Arable and Horticultural crops 


(Unit: Number of samples)

Category  Total number of reported samples Within the maximum limit
(100Bq/kg for general foods)
Above the maximum limit
The items from which radioactive cesium above the maximum limit was detected
≦50Bq/kg(including "Not detected") 50Bq/kg<
Wheat and Barley 1,818 1,818 0 0  
Vegetables 18,570 18,555 10 5 Spinach, Angelica keiskei (Ashitaba), Threeleaf arrowhead, Rotus root, Japanese mustard spinach (komatsuna)   
Fruits 4,478 4,405 60 13 Ume(Japanese Apricot), Blueberry, Japanese Chestnut, Citrus fruit (Yuzu) , Satsuma mandarin

Soy bean

(※See Note 1)








(※See Note2)

Soy bean
Other pluses 329 320 7 2 Azuki bean 
Other cultivated plants 3,094 2,994 86 14 Buckwheat
Mushrooms and Wild edible Plants  6,588 5,416 567 605 (※See Note 3)

Note 1: All soy bean samples in the table are harvested and tested in FY 2012. As pulses are normally harvested at the specific time of the year, stored and distributed all through the year until the next harvest season, 1,564 soy bean samples harvested in FY 2012 were tested in FY 2013. The results is available on the following web page: Results of inspections on radioactivity levels in agricultural products.

Note 2: Including 8 soy beans which are under 500 Bq/kg (as a transitional measure, the provisional reguration value for general foods (500 Bq/kg) applied to soy bean until December 31,2012). 

Note 3: Wild Mushrooms, Eleutherococcus sciadophylloides (Koshiabura), Bamboo shoots, Ostrich fern, Aralia elata (shoot), Japanese royal fern, Pteridium aquilinum, Japanese pepper(Wild), Elatostema umbellatum var. majus (Uwabamisou), Giant butterbur(Wild), Dried shiitake, Shiitake grown on Raw Log, Processed enokitake (mushroom)grown on Raw Log, Brick cap (mushroom) grown on Raw Log, Oyster mushroom grown on Raw Log, Bunaharitake (mushroom) grown on Raw Log, Late fall oyster (mushroom) grown on Raw Log, Japanese butterbur scape(Wild), Chestnut(Wild), Japanese parsley(Wild), Parasenecio delphiniifolius (Momijigasa)(Wild), Japanese ginger (Myoga)(Wild), Chocolate vine(Wild), Grifola frondosa (mushroom) (dried), Synurus pungens (Oyamabokuchi)(dried), Japanese horseradish (leaf), Walnut(Wild) 


Tea(Tea infusion)

(Unit : Number of samples)

Total number of reported samples

Within the maximum limit (10 Bq/kg)

Above the maximum limit

(>10 Bq/kg)

<5 Bq/kg

>5 Bq/kg

≤10 Bq/kg







Livestock products

Data about livestock products is available on another MAFF website: http://www.maff.go.jp/e/seisan/index.html



Agricultural Production Bureau
Administration Division
Ministry of Agriculture, Forestry and Fisheries
1-2-1 Kasumigaseki, Chiyoda-ku, Tokyo 100-8950, Japan