From The Guardian:
The flying pips, shattered shells and fleshy shrapnel still haunt farmer Liu Mingsuo after an effort to chemically boost his fruit crop went spectacularly wrong. Field after field of watermelons exploded when he and other agricultural workers in eastern China mistakenly applied forchlorfenuron, a growth accelerator.
"Exploding watermelons put spotlight on Chinese farming practices" (Thanks, Jim Leftwich!)