Wheat leaf rust Wheat leaf rust Wheat leaf rust is a fungal disease that affects wheat, barley and rye stems, leaves and grains. In temperate zones it is destructive on winter wheat because the pathogen overwinters. Infections can lead up to 20% yield loss, which is exacerbated by dying leaves, which fertilize the fungus. The pathogen is "Puccinia" rust fungus. "Puccinia triticina" causes "black rust", "P. recondita" causes "brown rust", and "P. striiformis" causes "yellow rust". It is the most prevalent of all the wheat rust diseases, occurring in most wheat growing regions. It causes serious epidemics in North America, Mexico and South
Rust Craft Greeting Card Company Rust Craft Greeting Card Company The Rust Craft Greeting Card Company was an American greeting card, printing company and owner of television stations. It produced what is believed to be the first Christmas card. The company was founded in a bookstore in Kansas City, Missouri, in 1906 by its owner, Fred Winslow Rust. The first Christmas card was printed on heavy tan paper and included a brief message in two colors. The success of the Christmas card grew into a business letters, postcards, and greeting cards with envelopes. Rust revolutionized the use of the "French Fold," which turned a single