Root-knot and its control (1911) (14780740314)

Identifier: rootknotitscontr217bess (find matches)
Title: Root-knot and its control
Year: 1911 (1910s)
Authors: Bessey, Ernst Athearn, 1877-1957 United States. Bureau of Plant Industry
Subjects: Root-knot Nematode diseases of plants
Publisher: Washington (D.C.) : G.P.O.
Contributing Library: U.S. Department of Agriculture, National Agricultural Library
Digitizing Sponsor: U.S. Department of Agriculture, National Agricultural Library



Text Appearing Before Image:
X 105: t, t, Testis. Fig. 14.-—Mature male stillwithin lan^al skin, X 85. Fig. 15.—^)\Iature male, X 85. Fig. 16.—^Anteriorportion of adult male, showing spear and peculiar structure for guiding itsmovements, X 930. Fig. 17.—Larva entering root of clover, X 100. Fig. 18.—Larva of Heterodera schachtii Schmidt just escaped from egg (compare fig. 3),X 105. Fig. 19.—^Anterior portion of same, X 435. Plate II. Fig. 1.—Root-knot on sugar beets grown at the Subtropical Laboratory,Miami, Fla. 1907. Photographed by E. A. Bessey. Fig. 2.—Root-knot onsquash, from Beeville, Tex. 1904. Photographed by TV. A. Orton. Plate III. Fig. 1.—Root-knot on carrot, from Morrison, HI. 1908. Photographedby W. W. Gilbert. Fig. 2.—Root-knot on red clover grown in a pot of sterilizedsoil inoculated with affected roots of Ipomoea syringaefolia, Subtropical Labora-tory, Miami, Fla., 1908. Photographed by E. A. Bessey.21782 Bui. 217, Bureau of Plant Industry, U. S. Dept. of Agriculture. Plate I.
Text Appearing After Image:
Stages in the Development of Heterodera Radicicola (Greef) Mull., etc. Bui. 217, Bureau of Plant Industry, U. S. Dept. of Agriculture. Plate II