British grasses and their employment in agriculture . Fig. 161. Seeds of the Common Sowthistle {Sonchus oleraceus, L.). x6. The chaff should not exceed one per cent, by weight, and thePurity should easily reach 97 to 99 per cent, The Germinationof good seed will reach 50 to 60 per cent, in seven days, and 85 to90 per cent, in 21 days. Sometimes 28 days are required to ascer-tain its full germination capacity. CH. VIIl] Goeks-foot 145. Fig. 162. Seeds of the Prickly Sowthhtle (Sonchus asper, Hoff.). x 6.

---

Size: 2422px × 1032px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, booksubjectgr