Dear Prof.Ben Bolker

I cheek my email, but i didn"t see my topics in  the list. could you please
advice me.

kind regards,

ALisia



On Mon, Jul 27, 2009 at 3:27 PM, alis villiyam <aalisiyan@gmail.com> wrote:

>
>
> ---------- Forwarded message ----------
> From: alis villiyam <aalisiyan@gmail.com>
> Date: Mon, Jul 27, 2009 at 9:47 AM
> Subject: randomized block design analysis in R
> To: bolker@zoology.ufl.edu
>
>
> Dear Tae-kyun Kim
>
> Hello,
>
> I'm a  student and I have some trouble with the experimental
> (columns-experiments) design of my project. I use a randomized block design
> with 4 treatments including a control. For each treatment, I use 3
> replicates and 3 blocks.
>
> The treatments are:
>
> -T1 = COD (300 mg/Lit)   COD=chemical oxygen demand
>
> -T2 = COD (200 mg/Lit)
>
> -T3 = COD (100 mg/Lit)
>
> -T4 = COD (0 mg/Lit) as a control
>
> The experiment is conducted during three months and a sample is taken each
> Week in every experimental unit.
>
> At the first, I irrigated all soil columns (12 columns) with demonize water
> for 1 week.
>
> Then during 8 weeks, I irrigated all columns with waste water with
> different concentration. Then, gain, I irrigated all columns with demonize
> water for 4 weeks.
>
> Now I want to know how I can analyses the results in R. For example, I want
> to detect the
> Effect of waste water on some physical properties of soil, before, during
> use waste water and after use waste water (Is there any significant change
> in properties of soil.) Time is also important, so I want to know the
> interaction between time and some physical properties of soil, like water
> content .first comprises between Treatments and then comprise between
> weeks).
>
> Questions to be answered:
>
> 1)      Theta (water content), before (1 week) and after the COD; is there
> a difference?
> 2)      Theta, during, before and after the COD; is there a difference?
> 3)      Is there a trend in Theta, during COD (8 weeks)?
> 4)      Is there a difference in Theta, during COD between the treatments?
> I hope somebody can help me to find correct statistical analyses in R.
>
>
> Kind regards,
>
> Alisia
>
>
>
>

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