English to Portuguese Science Forestry / Wood / Timber Arboriculture

Hi, I am looking to translate the following term: "raised benches" to European Portuguese. Here is the sentence to give some context:

"The 60 pots were placed on raised benches under a natural photoperiod and were divided into a randomized block design with 4 blocks, 3 treatments, and 5 replications per treatment."

I asked my colleague from forestal engineering (the one I am translating for) what it might be, and she doesn't have a clue. I thought about "vasos altos" or "bancos altos", I ruled out "vasos" because the word "pot" before already means "vaso", and my colleague doesn't agree with "bancos" either. If you can help me, please give me sources or at least explain me why did you chose that translation, that way I can decide the best translation, and I can also learn in the process. Thank you.