[R] split-split plot design with missing data

[Elise BUISSON]

Dear all,

I measured the survival and biomass of plants under various combinations
of treatments. There are three treatments (S, T, N) with two levels each
(S, s; T, t; N, n).
The 8 possible combinations
STN
STn
StN
Stn
sTN
sTn
stN
stn
are organized in a split-split plot design and replicated 12 times.

I have analyzed the survival data (%) using the aov function, which seemed
to work fine.
I then tried to analyze the biomass data, but since many plants died,
there is quite a bit of missing data. The aov function does not seem to
allow the analyses of such data.

Can anybody help?
Yours sincerely,
Elise Buisson.