There is 1 horse power. Watt, the Scotish inventor, measured it by measuring how much weight a horse can lift while pulling a rope running through a pulley to a weight on the ground — one foot high in one second. 550 pounds of weight a foot high in one second.
So we propose: 1 Chicken length of grass: the amount of grass grown in a good season in one month. #grass #growing #pasture