stalk of grain, rice, corn, hemp
稭 centers on the leftover stalk of a harvested plant, especially grain crops like rice, corn, or hemp. It refers to the dry stem or straw after the useful part has been removed.
稭 combines 禾 (grain plant) with 皆, which likely contributes the sound. The character originally referred to the stalk or straw left after threshing grain.
The grain plant 禾 on the left and 皆 (all/everyone) on the right suggest that after everyone has taken the grain, only the stalk remains.
For カツ, imagine a cat playing with a dry grain stalk: cat -> カツ, and the cat bats the leftover straw around.
central stalk of a dried rice plant