In Genesis, what was the first thing Noah did after the Flood covenant was established?

In Genesis, Noah planted a vineyard after the Flood covenant was established. Genesis 9:20 says that Noah, described as a man of the soil, began planting a vineyard after the covenant and its rainbow sign had been presented.

The next verses describe Noah drinking wine, becoming drunk, and lying uncovered inside his tent. This episode is separate from the earlier Flood narrative, which ends with the family leaving the ark and the covenant being announced. The vineyard detail begins a new post-flood scene about Noah and his sons.

Popular summaries often end the story at the rainbow, so Noah's later agricultural activity is less familiar. Genesis does not say that the vineyard was the first crop grown by any human after the Flood in a scientific sense; it simply records Noah planting one. The passage also does not identify its location beyond the land where Noah lived after leaving the ark.