The phrase "are adequately controlled" is correct and usable in written English.
It can be used in contexts where you want to express that something is being managed or regulated effectively.
Example: "In our study, we ensured that all variables are adequately controlled to maintain the integrity of the results."
Alternatives: "are properly managed" or "are sufficiently regulated".
Environmental NGO, Buglife responded, saying: "Flea beetles are adequately controlled by alternative pesticides.
Thus, our empirical findings provide strong evidence for the existence of at least half of an environmental Kuznets curve for deforestation, which appears to be the most robust factor explaining differences in forest cover across countries once geo-climatic factors are adequately controlled for.
In order to cope with the underlying fuzziness of these landscapes, manipulation of images has been developed as the best solution so that the variations shown to respondents are adequately controlled in the study and landscape features are easily recognized by the respondents.
At present, his symptoms are adequately controlled.
However, article producers may lift the ban by proving that the risks posed by the substance use are adequately controlled or that the socio-economic benefits outweigh the risks.
For this they must, prior to the placing on the market or usage, prove that the risks posed by the substance use are adequately controlled or that the socio-economic benefits outweigh the risks [11].
Still, it could provide fodder for critics who say that agricultural biotechnology cannot be adequately controlled.
In particular, anesthesia is a highly relevant confounder, which needs to be adequately controlled for in functional connectivity studies.
Lighting could not be adequately controlled due to classroom design and infrastructure.
Diarrhoea and nausea/ vomiting were adequately controlled by the use of loperamide and antiemetics, respectively.
Vascular surgery is a last resort for those whose peripheral artery disease cannot be adequately controlled with medication, exercise or habit changes.
