Effects of fertilization and other factors on phytophthora rot of soybeans and on natural inoculum of phytophthora merasperma f. sp. glycinea in soil

This reproduction was m ade from a copy o f a docum ent sent to us for microfilming.While the m ost advanced technology has been used to photograph and reproduce this docum ent, the quality o f the reproduction is heavily dependent upon the quality o f th e m aterial subm itted.The following explanation o f techniques is provided to help clarify markings o r notations which may appear on this reproduction.1 .T h c sign or " target" for pages apparently lacking from the docum ent photographed is " Missing Pagc(s)" .If it was possible to obtain the missing pagc(s) o r section, they arc spliced into the film along w ith adjacent pages.This may have necessitated cutting through an image and duplicating adjacent pages to assure com plete continuity.2. When an image on the film is obliterated w ith a round black m ark, it is an indication o f eith er blurred copy because o f m ovem ent during exposure, duplicate copy, o r copyrighted m aterials th a t should n o t have been filmed.F or blurred pages, a good image o f the page can be found in the adjacent frame.If copyrighted m aterials were deleted, a target n o te will appear listing the pages in the adjacent fram e.3. When a m ap, drawing o r chart, etc., is part o f th e m aterial being photographed, a definite m ethod o f " sectioning" the m aterial has been followed.It is custom ary to begin filming at the upper left hand com er o f a large sheet and to continue from left to right in equal sections w ith small overlaps.If ncccssaiy, sectioning is continued again-beginning below the first row and continuing on until com plete.