A group of Big Island farmers opposed to genetically engineered plants dumped more than 20 papaya fruit into a trash bin on the University of Hawai’i-Hilo campus yesterday in a symbolic protest of what they say is »contamination« of their trees by plants created by UH scientists. The group, which leaders say includes as many as 100 small farmers, including conventional, backyard and organic farmers on three islands, is calling on UH to create a plan to prevent cross-pollination of their papaya trees as well as offering liability protection for growers if their markets are lost.