I would say that we do not know nearly enough about your experimental design to ponder your question.   What is "name", and how does that fixed effects factor figure into the experimental design? Is "name" some treatment factor applied to plots within blocks? As @StatsMan implies, "treatment" suddenly appears in the model! Is "treatment" equivalent to "name"? Clearly, the code you posted is not code that runs; that makes it very hard (if not impossible) for the Community to help you.   Are blocks (or plots within blocks) followed throughout the five years, or are blocks/plots re-established in each year?   Your current model incorporates block and year as crossed random effects. This is a valid design concept, but it is challenging to build a statistical model to implement that design structure, particularly with repeated measurements (assigned to evaluations) nested within year and, potentially, plots (assigned to "name") nested within blocks.   Your goal should be a statistical model that matches your experimental design and addresses your research questions. Your goal should not be "something that runs". Software does what you tell it to do, not what is correct.   I hope this helps move you forward.   ... View more