Japan imported 757,521 tons *metric) of banana, 145, 188 tons of pineapple, 5,510 tons of mango, 5,368 tons of papaya and 4,523 tons of coconut and many other fruits from tropical countries in 1990. The biggest problem of imported mango and papaya during marketing in Japan is anthracnose and stem end rots.
To increase the imports, the control of these very troublesome diseases in high rainfall area is most important.
When European fruits were introduced to Japan at the early 19th century, it was found that diseases were very serious due to high rainfall during the growing season.
Fruit growers developed two methods to control the diseases.
One is growing fruit trees in glass houses, and the other is bagging wherein each fruit is covered with paper bag on the tree before the infection occurs.
In this presentation, we will show the Japanese way of controling diseases.
We strongly recommend bagging for tropical fruits especially mangoes.
Bagging is effective not only in controlling diseases and insects but it also enhances the appearance of the fruits and reduces chemical residue.