. Pig. 24. Estimated percentage reduction in yield from stem rust of ATheat, 1920. Comments of especial interest on occurrence and severity of infection are as follows: Michigan: "Stem rust probably reduced winter wheat by the average amount j which, with leaf rust, has generally been believed to be under 5%* Frequent cases were found in the lower tier of counties where severe loss was associated with barberry plants in close proximity to fields. In the spring wheat area, which is largely in the Upper Peninsula, loss from black stem rust was worst in years, wheat in I general being shrive
. Pig. 24. Estimated percentage reduction in yield from stem rust of ATheat, 1920. Comments of especial interest on occurrence and severity of infection are as follows: Michigan: "Stem rust probably reduced winter wheat by the average amount j which, with leaf rust, has generally been believed to be under 5%* Frequent cases were found in the lower tier of counties where severe loss was associated with barberry plants in close proximity to fields. In the spring wheat area, which is largely in the Upper Peninsula, loss from black stem rust was worst in years, wheat in I general being shriveled and of poor quality. At the Chatham sta- tion spring wheat was not harvested. A ivrip through that section showed any number of fields that locked prcnouncedly scoty from a distance. I would place the loss at easily 25% in spring wheat. li
Size: 2752px × 1817px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1920, bookyear1921
