Mich. Comp. Laws § 290.31
That whenever wheat, rye, shelled corn, corn on the cob, corn meal, oats, buckwheat, beans, clover seed, timothy seed, flax seed, hemp seed, millet seed, blue grass seed, red top seed, barley, dried apples, dried peaches, potatoes, potatoes (sweet), onions, turnips, peas, cranberries, dried plums, castor beans, salt, mineral coal, Hungarian grass seed, orchard grass seed, osage orange seed, beets, carrots or parsnips, shall be sold by the bushel, and no special agreement as to the measure or weight thereof shall be made by the parties, the measure thereof shall be ascertained by weight, and shall be computed as follows, viz:
60 pounds for a bushel of wheat;
56 pounds for a bushel of rye;
56 pounds for a bushel of shelled corn;
70 pounds for a bushel of corn on the cob;
50 pounds for a bushel of corn meal;
32 pounds for a bushel of oats;
48 pounds for a bushel of buckwheat;
60 pounds for a bushel of beans;
60 pounds for a bushel of clover seed;
45 pounds for a bushel of timothy seed;
56 pounds for a bushel of flax seed;
44 pounds for a bushel of hemp seed;
50 pounds for a bushel of millet or Hungarian grass seed;
14 pounds for a bushel of blue grass seed;
14 pounds for a bushel of red top seed;
48 pounds for a bushel of barley;
22 pounds for a bushel of dried apples;
28 pounds for a bushel of dried peaches;
60 pounds for a bushel of potatoes;
56 pounds for a bushel of sweet potatoes;
54 pounds for a bushel of onions;
58 pounds for a bushel of turnips;
60 pounds for a bushel of peas;
40 pounds for a bushel of cranberries;
28 pounds for a bushel of dried plums;
46 pounds for a bushel of castor beans;
56 pounds for a bushel of Michigan salt;
80 pounds for a bushel of mineral anthracite coal;
60 pounds for a bushel of mineral bituminous coal;
14 pounds for a bushel of orchard grass seed;
33 pounds for a bushel of osage orange seed;
56 pounds for a bushel of beets;
50 pounds for a bushel of carrots;
50 pounds for a bushel of parsnips.
MCL 290.31