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Less positive reports came from St. Louis , where the rain brought by the hurricanes damaged corn , rice , and cotton crops . In terms of natural advantage , the British Isles are good for growing grass , and cereal crops are , of course , a glorified grass and meat comes from grass . One spray contains a bacterium that can fight off other bacteria that activate ice formation in pear , apple , strawberry , peach and potato crops . Therefore , sorghum offers novel learning opportunities relevant to weed biology as well as to improvement of a wide range of other forage , turf , and biomass crops . At the implementation level , technologists can design impressive management systems , technology packages , and hybrid crops . The same features that make " Johnson grass " ( Sorghum halepense ) such a troublesome weed are actually desirable in many forage , turf , and biomass crops that are genetically complex .