The complex top part of this kanji looks like a cultivated field with fences or a gate. The bottom component (辰) can be imagined as a farmer bending over with a tool, diligently working the land. It visually captures the essence of AGRICULTURE and farming.
'Nō' — You might say 'NO!' to the hard work of FARMING if you're not used to it, or 'NOW' is the time for AGRICULTURE!