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Show Prickly Pear Killer. The Australian town of Boonarga has a memorial to an insect. This is the Cactoblastis Memorial hall built by farmers to honor the tiny insects winch freed thousands of rich acres from prickly pear. The weed from North and South America had a strangle hold on 30 million acres of Australian land by 1925. In the Argentine, Australian scientists tracked down the Cactoblastis Cacto-blastis cactorium insect. Within seven sev-en years the last big belt of prickly pears in Queensland has gone. |