In all the models mentioned, treatments are considered as fixed effects, where random effects are different, model and model1 is used when block and days are nested or crossed with each other and vice versa. model2 gives the variance explained by days and blocks individually as random effects.

Thank's for your reply. As I understand, the experimental design is both crossed and nested, because TREATMENT is nested within BLOCK, and BLOCK (which is the same three blocks every day) is crossed with DAY.

I believe the fixed effects are as simple as they should be, but I don't have any confidence in the way these random effects are handled.

Can you elaborate a little more on the way R handles repeated measures with both crossed and nested designs?

I think this link could be of help to u. https://stats.stackexchange.com/questions/13166/rs-lmer-cheat-sheet

Dear Jonathan Hessner Lindhardt

I am doing a same experiment and I have a similar question that you put here. I am wondering if you could share the final R code used in your experiment? I am interested to know how you considered the effect of block and day in your model.

Cheers!

Dear all,

I hope that some of you are more or less familiar with the "ASREML-R".

I have tried hard to install the package of ASREML-R.

Although "I am a Ph.D. student at Humbold university"

I couldn´t find Site reference: ?????????????? as I found that for the University of Zurich

Site reference: VS10AF11

Organization: University of Zurich

# Now if I run the model, I get the following error

License error: No license for product (-1)

# I searched the internet to solve this problem and it was mentioned that the license should be activated by the command

asreml.license.activate()

# Now I have the next message when I should provide the activation code that should be sent to my email

Please enter your activation code (RET or 0 to exit):

but to do that in the link below I need Site reference from my organization and I don´t know from where I can get this information.

https://asreml.kb.vsni.co.uk/asreml-r-4-download/

I hope any of you can help me in doing that or just tell me clearly if this package is not free to be used as the other packages in R.

Thanks in advance

Heba