. Diseases of fruit crops in the United States in 1920. Fruit Diseases and pests United States. io8 Citrus scab caused by Gladogporrum citri Massee. The information on scab in Alabama and Florida was supplied by H. R. Fulton and J. R. V/inston. ^ Flo^^ida scab v/as of moderate prevalence but it is annually becoming more widespread. In I92O it probably injured nearly 20% of the crop of Florida grapefruit, resulting in a loss that may be placed at :^"500,000. \fhen copper sprays were applied in the spring, thoroughly and at the right time, the results were excellent. Winston mentions the gr
. Diseases of fruit crops in the United States in 1920. Fruit Diseases and pests United States. io8 Citrus scab caused by Gladogporrum citri Massee. The information on scab in Alabama and Florida was supplied by H. R. Fulton and J. R. V/inston. ^ Flo^^ida scab v/as of moderate prevalence but it is annually becoming more widespread. In I92O it probably injured nearly 20% of the crop of Florida grapefruit, resulting in a loss that may be placed at :^"500,000. \fhen copper sprays were applied in the spring, thoroughly and at the right time, the results were excellent. Winston mentions the Hall as very suscepti- ble , the Royal and Triumph apparently immune, while other varieties are moderately susceptible. In Alabama Pulton reported scab as more prevalent than dui'ing previous years on grapefruit and Satsurna oranges in Liobile and Baldwin Counties. Ten percent of the grapefruit, v/hich are not very important commercially, were affected, and |50,000 loss to Satsumas was estimated. Copper sprays in the spring gave favorable Pig. 19. Areas in Florida, and in Mobile and taldwin Counties, Alabama, â where citrus scab on grapefruit and Satsuma is usually very serious. The disease occurs, however, throughout the entire citrus belt cf I-'lorida. Stem end rot caused by Phomopsis citri Fawcett and Diplodr'a natalensis Ev. Stem end rot occurred throughout the entire citrus belt of Florida causing heavy losses to both ('^2,QUO,000) and graptfruit (^250,000) . It was considerably above the average in prevalence according to Winston, No varieties seem to be Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Anderson, H. W. (Harry Warren), 1885-1971; United States. Plant Disease Survey. [Washington, D. C. ] : Plant Disease Survey, Bureau of Plant Industry, Unit
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