This is a figure of speech referring to the earth's fertility. Alternate translation: "far from the fertile soil" (See: [[rc://en/ta/man/jit/figs-metaphor]])
"Dew" is drops of water that form on the plants during the night. This can be made explicit in the translation. Alternate translation: "the night mist from the sky to water your crops" (See: [[rc://en/ta/man/jit/figs-explicit]])