Lots of watermelons are shipped at a fruit sorting facility of Japan Agriculture (JA) in Kumamoto City, Kumamoto Prefecture, western Japan, on March 2, 2021. Farmers and employees of JA gather to check their quality. Watermelon is a local specialty. ( The Yomiuri Shimbun via AP Images )

Lots of watermelons are shipped at a fruit sorting facility of Japan Agriculture (JA) in Kumamoto City, Kumamoto Prefecture, western Japan, on March 2, 2021. Farmers and employees of JA gather to check their quality. Watermelon is a local specialty. ( The Yomiuri Shimbun via AP Images )

Lots of watermelons are shipped at a fruit sorting facility of Japan Agriculture (JA) in Kumamoto City, Kumamoto Prefecture, western Japan, on March 2, 2021. Farmers and employees of JA gather to check their quality. Watermelon is a local specialty. ( The Yomiuri Shimbun via AP Images )

Lots of watermelons are shipped at a fruit sorting facility of Japan Agriculture (JA) in Kumamoto City, Kumamoto Prefecture, western Japan, on March 2, 2021. Farmers and employees of JA gather to check their quality. Watermelon is a local specialty. ( The Yomiuri Shimbun via AP Images )

Lots of watermelons are shipped at a fruit sorting facility of Japan Agriculture (JA) in Kumamoto City, Kumamoto Prefecture, western Japan, on March 2, 2021. Farmers and employees of JA gather to check their quality. Watermelon is a local specialty. ( The Yomiuri Shimbun via AP Images )

Lots of watermelons are shipped at a fruit sorting facility of Japan Agriculture (JA) in Kumamoto City, Kumamoto Prefecture, western Japan, on March 2, 2021. Farmers and employees of JA gather to check their quality. Watermelon is a local specialty. ( The Yomiuri Shimbun via AP Images )

Lots of watermelons are shipped at a fruit sorting facility of Japan Agriculture (JA) in Kumamoto City, Kumamoto Prefecture, western Japan, on March 2, 2021. Farmers and employees of JA gather to check their quality. Watermelon is a local specialty. ( The Yomiuri Shimbun via AP Images )

Lots of watermelons are shipped at a fruit sorting facility of Japan Agriculture (JA) in Kumamoto City, Kumamoto Prefecture, western Japan, on March 2, 2021. Farmers and employees of JA gather to check their quality. Watermelon is a local specialty. ( The Yomiuri Shimbun via AP Images )

Lots of watermelons are shipped at a fruit sorting facility of Japan Agriculture (JA) in Kumamoto City, Kumamoto Prefecture, western Japan, on March 2, 2021. Farmers and employees of JA gather to check their quality. Watermelon is a local specialty. ( The Yomiuri Shimbun via AP Images )

Lots of watermelons are shipped at a fruit sorting facility of Japan Agriculture (JA) in Kumamoto City, Kumamoto Prefecture, western Japan, on March 2, 2021. Farmers and employees of JA gather to check their quality. Watermelon is a local specialty. ( The Yomiuri Shimbun via AP Images )

Lots of watermelons are shipped at a fruit sorting facility of Japan Agriculture (JA) in Kumamoto City, Kumamoto Prefecture, western Japan, on March 2, 2021. Farmers and employees of JA gather to check their quality. Watermelon is a local specialty. ( The Yomiuri Shimbun via AP Images )

Lots of watermelons are shipped at a fruit sorting facility of Japan Agriculture (JA) in Kumamoto City, Kumamoto Prefecture, western Japan, on March 2, 2021. Farmers and employees of JA gather to check their quality. Watermelon is a local specialty. ( The Yomiuri Shimbun via AP Images )

Lots of watermelons are shipped at a fruit sorting facility of Japan Agriculture (JA) in Kumamoto City, Kumamoto Prefecture, western Japan, on March 2, 2021. Farmers and employees of JA gather to check their quality. Watermelon is a local specialty. ( The Yomiuri Shimbun via AP Images )

Lots of watermelons are shipped at a fruit sorting facility of Japan Agriculture (JA) in Kumamoto City, Kumamoto Prefecture, western Japan, on March 2, 2021. Farmers and employees of JA gather to check their quality. Watermelon is a local specialty. ( The Yomiuri Shimbun via AP Images )

Lots of watermelons are shipped at a fruit sorting facility of Japan Agriculture (JA) in Kumamoto City, Kumamoto Prefecture, western Japan, on March 2, 2021. Farmers and employees of JA gather to check their quality. Watermelon is a local specialty. ( The Yomiuri Shimbun via AP Images )

Lots of watermelons are shipped at a fruit sorting facility of Japan Agriculture (JA) in Kumamoto City, Kumamoto Prefecture, western Japan, on March 2, 2021. Farmers and employees of JA gather to check their quality. Watermelon is a local specialty. ( The Yomiuri Shimbun via AP Images )

Lots of watermelons are shipped at a fruit sorting facility of Japan Agriculture (JA) in Kumamoto City, Kumamoto Prefecture, western Japan, on March 2, 2021. Farmers and employees of JA gather to check their quality. Watermelon is a local specialty. ( The Yomiuri Shimbun via AP Images )

Lots of watermelons are shipped at a fruit sorting facility of Japan Agriculture (JA) in Kumamoto City, Kumamoto Prefecture, western Japan, on March 2, 2021. Farmers and employees of JA gather to check their quality. Watermelon is a local specialty. ( The Yomiuri Shimbun via AP Images )

Lots of watermelons are shipped at a fruit sorting facility of Japan Agriculture (JA) in Kumamoto City, Kumamoto Prefecture, western Japan, on March 2, 2021. Farmers and employees of JA gather to check their quality. Watermelon is a local specialty. ( The Yomiuri Shimbun via AP Images )

Lots of watermelons are shipped at a fruit sorting facility of Japan Agriculture (JA) in Kumamoto City, Kumamoto Prefecture, western Japan, on March 2, 2021. Farmers and employees of JA gather to check their quality. Watermelon is a local specialty. ( The Yomiuri Shimbun via AP Images )

Lots of watermelons are shipped at a fruit sorting facility of Japan Agriculture (JA) in Kumamoto City, Kumamoto Prefecture, western Japan, on March 2, 2021. Farmers and employees of JA gather to check their quality. Watermelon is a local specialty. ( The Yomiuri Shimbun via AP Images )

Lots of watermelons are shipped at a fruit sorting facility of Japan Agriculture (JA) in Kumamoto City, Kumamoto Prefecture, western Japan, on March 2, 2021. Farmers and employees of JA gather to check their quality. Watermelon is a local specialty. ( The Yomiuri Shimbun via AP Images )

Lots of watermelons are shipped at a fruit sorting facility of Japan Agriculture (JA) in Kumamoto City, Kumamoto Prefecture, western Japan, on March 2, 2021. Farmers and employees of JA gather to check their quality. Watermelon is a local specialty. ( The Yomiuri Shimbun via AP Images )

Lots of watermelons are shipped at a fruit sorting facility of Japan Agriculture (JA) in Kumamoto City, Kumamoto Prefecture, western Japan, on March 2, 2021. Farmers and employees of JA gather to check their quality. Watermelon is a local specialty. ( The Yomiuri Shimbun via AP Images )

Lots of watermelons are shipped at a fruit sorting facility of Japan Agriculture (JA) in Kumamoto City, Kumamoto Prefecture, western Japan, on March 2, 2021. Farmers and employees of JA gather to check their quality. Watermelon is a local specialty. ( The Yomiuri Shimbun via AP Images )