effect of titanium(TiO2) on Valeriana officinalis germination

1. Did you plant several doops and controls so you may do quantitative comparisons?

2.IS everything else, (containers, water devices, water etc) all consistent?

3. Why TiO2?-pure TiO2 can be found as black sands in many places and plants can be grown directly in the sands. ARE your ppm solutions, really solutions or are they colloidal suspensions of white TiO2?

cause if they arent solutions you may not be recording the suspension characteristsics correctly unless you stir or shake your mixes before apllying and applying each mixture precisely at the same time after stirring or shaking