. Fig. 137.^Tobacco roots showing effect of root-rot. After Gilbert. death may result before they attain a height of more than 5-10 mm. In other cases of milder attack the roots alone are invaded and the plants stunted. The tips of the rootlets

---

Size: 1866px × 2678px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookauthorstevensf, bookcentury1900, bookdecade1920, bookyear1921