File:Fumigation for the citrus white fly, as adapted to Florida conditions (1908) (14767513801).jpg

Identifier: fumig00unit (find matches)
Title: Fumigation for the citrus white fly, as adapted to Florida conditions
Year: 1908 (1900s)
Authors: United States.: Bureau of Entomology
Subjects: Citrus whitefly--Control--Florida Citrus--Diseases and pests--Florida Aleyrodidae.
Publisher: Washington, D.C. : U.S. Dept. of Agriculture, Bureau of Entomology
Contributing Library: University of Florida, George A. Smathers Libraries
Digitizing Sponsor: University of Florida, George A. Smathers Libraries with support from LYRASIS and the Sloan Foundation

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Text Appearing Before Image:
-inchgas pipe. Tents of tins style are preferable for use only when thetrees in a grove are uniformly less than 12 feet in extreme height.Sheet tents are made in the form of flat octagons and, being adapt-able for trees of all sizes, are in California used almost exclusively.Plate I, figure 3, shows a tree which is 14 feet in extreme height and14 feet in extreme expanse, covered by a hoop or bell tent. When thetent is in position covering the tree the measurements are: Height,13 feet, and diameter, 12 feet. Hoop tents are not always easilyplaced in position over trees of this size, and it is believed that ordi-narily a sheet tent is more desirable for trees of all sizes. A thirdstyle of tent which will be found useful in fumigating small trees isthe box tent in the form of a rectangular prism. This will probablyprove advantageous for trees 5 feet or less in height. The lightwooden framework supporting the cloth cover gives a form to the Bui. 76, Bureau oi Entomol Plate I.
Text Appearing After Image:
Figs. 1-3.-Method of Covering Small Tree with Bell or Hoop Tent. iOriginal.) I 5 inclosed space which permit of economical use of chemical withgreater uniformity of re ill! natruction of tints. The construction of the !>..suggested in the for ph is a simple matter and con venient patterns will suggest themselves at once bo anjof fumigating small trees. The framework should be light but u.-ilbraced, and for a covering either 6J-ounce drill, painted to render mn> nearly gas tight as possible, or oilcloth is recommended. Prof. C. W. Woodworth, of the California experiment station,gives ili»v following directions for cutting the cloth for bell tent \ll of these tenta are made in the same manner and are the mod economical incloth of .hi\ tents made. Commonl) the tenl i« made bj the cul and fit method.These tenta maj be made \\iili Bcarcelj an) loss, ii cut according to thi- follidirections: Measure off strips of a length equal to twice the height plus one-tenth thediameter of the tfumig00unit

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