Imagine a thick layer of clouds, mist, ash etc of sorts that blankets the higher atmospheres of a planet such that nights are nearly pitch black and daylight is range of greyish (think of a heavily cloudy day during peak sun hours) to reddish/orangish (red because it's a longer wavelength. See pictures of California's red sky during the day during wildfires for examples). Note the range doesn't imply that the sky turns from grey to red to night. Rather it means on some days its greyish to night, on others its red/orangish to night. Occasionally there might be some breaks in the clouds/mist/whatever to allow direct sunlight. But it doesn't last very long.
While the cloud/mist/etc wasn't there from the beginning, it appeared a couple centuries before the start of the premise. But for this question and modern humanity, they've basically lived with it since even before the industrial revolution and modern farming techniques. In that sense humanity has had an easier time adapting than say plants or animals which take way longer for evolution
Assuming that humans in this setting are at our level of modern technology and assuming that they can't do anything about the mist/clouds/whatever, what would farming look like?
