This is the 6132nd most frequent Russian word.
строгого
"Strict" or "severe" (genitive singular form of "строгий").
The word 'строгого' refers to 'strict' and modifies the noun 'порядка' (order), indicating its quality.
Учитель придерживался строгого порядка в классе.
The teacher adhered to a strict order in the class.
Here, 'строгого' means 'strict' and is descriptive of the noun 'контроля' (control), specifying the level or intensity.
Мы избегаем строгого контроля в проведении эксперимента.
We avoid strict control in conducting the experiment.
In this sentence, 'строгого' modifies 'режима' (regime), illustrating the restrictive and precise nature of the diet.