CANBERRA/PARIS: Chicago wheat futures edged lower on Tuesday but prices held close to Friday’s four-month peak as cold temperatures posed a threat to crops in the Black Sea and U.S. Plains regions.

Starr Chester‘s valuation of Puccinia triticina, the orange leaf rust or brown rust of wheat. The reader who, misled by the short title "The Cereal Rusts", turns to this book for a comparative ...