. ?ig. 5* -oercentage reduction in vield from steni rust of wheat, 1919. V/hile the-barberry eradicati jn campaign was pressed vigorously in ::.ost states of the barberry eradication area, numerous infected oarberries, both cul- tivated and escapedj v.'ere ioand vddely scattered m a- number of states. As in the preceding year, a number of cases were noted, especially in the "northern states, where infected barberries v/ere clearly the centers of infection from which the rust had started in the spring* In a limited number of cases early infections, especially on certain grasse
. ?ig. 5* -oercentage reduction in vield from steni rust of wheat, 1919. V/hile the-barberry eradicati jn campaign was pressed vigorously in ::.ost states of the barberry eradication area, numerous infected oarberries, both cul- tivated and escapedj v.'ere ioand vddely scattered m a- number of states. As in the preceding year, a number of cases were noted, especially in the "northern states, where infected barberries v/ere clearly the centers of infection from which the rust had started in the spring* In a limited number of cases early infections, especially on certain grasses, and later on wheat or other grains,
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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1920, bookyear1920
