I have been trying to find the effect of different treatments on fruit decay.

The experiment: Fruit was monitored for degradation over a ten day period. I scored each of 6 fruits in each punnet every day and there are six punnets per treatment. Each punnet is being treated as a replicate here.

I now have a mean degradation % for each of six punnets every day for four treatments.

I now have a graph of this which shows a general pattern of the four groups decaying at different rates over the ten days .

I want to know if there is a significant difference between the treatments over time.

I have tried a repeated measures ANOVA, but not sure if this is correct as I used the same punnets everyday.

I've been reading about different tests I think might work, but I'm getting very lost in it all.

Thank you for reading, any help would be much appreciated