Effects of mineral levels on Effects of mineral levels on physiology and morphology of plants effectsofmineral00brolrich Year: 1968 77 GERMINATION 100 90 80 70 60 50 40 30 20 10 0 4 pprn ''24ppm / ,'- 8ppm / PRETREATMENT / Zl NC 7 14 DAYS 21 Figure 22. -- Effect of pretreatment of zinc chelate on percent germination of Portulaca oleracea seeds.

---

Size: 866px × 2309px
Photo credit: © Bookworm / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage