Was it a competitor or just a vandal who poisoned 7 million vegetable plants at a seedling nursery in Australia? The sabotage -- estimated at a loss of 23.5 million Australian dollars ($20.3 million) -- could more than double produce prices across the country due to decreased supply. About 4 million tomato seedlings were poisoned, as well as bell peppers, melons and eggplant. The region of Bowen, in northern Queensland state, grows the majority of Australia's winter vegetables. Police investigations found that a herbicide was introduced in late June into the irrigation system of the Supa Seedlings nursery, which sells...