. Diseases of cereal and forage crops in the United States in 1921. Grain Diseases and pests United States; Forage plants Diseases and pests United States. 240 ALFALFA - Leaf spot VaUGhan observes that in V/isoonsin the disease is v/orst on acid soils. Stokdyk states that the spot was severe in Kansas in fields v;hich were not cut early. In Arizona, according to Brown, the disease is fairly well distributed but not very important. In Idaho, it is common wherever alfalfa is grown, accord- ing to Hungerford. Barss says that the disease is common, but not often serious, in Oregon. Mackie notes th
. Diseases of cereal and forage crops in the United States in 1921. Grain Diseases and pests United States; Forage plants Diseases and pests United States. 240 ALFALFA - Leaf spot VaUGhan observes that in V/isoonsin the disease is v/orst on acid soils. Stokdyk states that the spot was severe in Kansas in fields v;hich were not cut early. In Arizona, according to Brown, the disease is fairly well distributed but not very important. In Idaho, it is common wherever alfalfa is grown, accord- ing to Hungerford. Barss says that the disease is common, but not often serious, in Oregon. Mackie notes that in California the first crop sustains the greatest damage and that the succeeding crops are injured but little, Yellow leaf blotch caused by Pyrenopeziza medicaginis Pckl. The states from which the yellow leaf blotch was reported, together vath estimates of injury, are indicated on the map, Pig. 63- V.^hile i±ie disease v^as widespread, it apparently was not very injurious during the past season, except in Idaho. Hungerford states that it causes defoliation of plants, is common throughout the state, and that it is the most serious disease on alfalfa in Idaho. According to Hungerford, the first cutting is most severely injured- In Oregon, it is said to be most cornmon in the semi-arid regions of the Pig. b3- Occurrence of and percentage losses from Pseudopeziza Hiedicag- inis (above line) and Pyrenopeziza medicaginis (belov; line) in I92I. Rust caused by Uromyces medicaginis Pass. Rust was reported from several states although it apparently did little damage in any of them. In North Carolina it was unimportant and occurred mostly in the Piedmont and Mountain counties; in Mississippi it v/as unimportant ani occurred locally; in Louisiana the importance was considerable, according to Edgerton; in Texas there v/as a slight trace in the Rio Grande Valley. It. Please note that these images are extracted from scanned page images that may have been digitally enhanced for re
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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1920, bookyear1922
