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S American wheat disease, Pyricularia causes big yield losses, breeders think #gmo needed http://t.co/VkMPFehUBZ http://t.co/ujkJ5ZXhnP
S American wheat disease, Pyricularia causes big yield losses, breeders think #gmo needed http://t.co/VkMPFehUBZ http://t.co/ujkJ5ZXhnP