
Hi, every body!
I am a new comer for R, so my question would unavoidablely sounds stupid. Sorry!
in my experiment, there are two type of soil ( soil F and soil D), each half of them were subjected to steam sterilize (result in FS and DS soil). A equal volume of soil from two of the four soil types (F, D, FS, DS) were mixed as follows: F+F, F+D, F+FS, F+DS, D+F, D+FS, D+DS, FS+DS (eight treatment).
Two type of plant (A, B) were planted in the eight treatment of soil in pot. There were 40 pots divided into 5 groups (8 pots for each group) for each treatment*plant combination. Finally there were 80 groups for plant A and B in total. The 40 groups for plant A were randomly arranged in plot 1, and for plant B in plot 2.
The experiment were sampled for three times. In each sampling date, one pot was randomly choosing from each group to measure biomass (80 pot for sampling date).
Now my question are as follow:
If different plant respond to soil treatment differently?
If plant's react to soil treatment deppends on time?
If soil F and D differed significantly in effects on plant biomass?
If soil sterilization have any aditional effects on plant biomass in this experiment?
Which is the most important factor for biomass accumulation?
It seems not so feasible to run six paralle one way ANOVA for each plant and sampling date combination to find answer for the questions above. It takes me a long time to learn lme4 package in R, but till now fruitless.
Would anybody recommend me a model and formula for these questions? Thank you!
Now you can see, my English is equally well as my statistics! Sorry again!
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梦幻K图，百变造型，让你的照片与众不同，快来MClub试试吧！

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