. Pig. 7. Estirra ted percentage reducftion in yield from scab of wheat, 1919- Hence the abundant presence of Ihe wheat scab organisms (G. saubinettii and Fusarium spp • ) in sporulating condition on various substrata, in close proj imity to the wheat followihg the blcDssoraing pe riod together with moist, warm weatlrer at that-time, favorable for spore dissemination and infection seem to have been the chief factors in bringing on the wheat scab epidemic in I919. This disease was repor ted-als0 on spelt f ro-m-Vannesota. As to relative susceptibility of varieties, definite data are very meagi
. Pig. 7. Estirra ted percentage reducftion in yield from scab of wheat, 1919- Hence the abundant presence of Ihe wheat scab organisms (G. saubinettii and Fusarium spp • ) in sporulating condition on various substrata, in close proj imity to the wheat followihg the blcDssoraing pe riod together with moist, warm weatlrer at that-time, favorable for spore dissemination and infection seem to have been the chief factors in bringing on the wheat scab epidemic in I919. This disease was repor ted-als0 on spelt f ro-m-Vannesota. As to relative susceptibility of varieties, definite data are very meagi The following reports bearing on this were received: South Dakota: "Marquis susceptible Preston'-and Blue Stem only slightly better. Kubanka and'Acfnd were resistant'but "dodged" some of the sc£ due to different heading ; Manley Charaplin. "Usually durum wheats scab worse than Marquis. This ^Bar the rever: was ; Champlin.
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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1920, bookyear1920
