Bi-kok Long-gia?p P?? ( United States Department of Agriculture ) s? Bi-kok e lian-pang heng-cheng ki-koan, choan-bun t? hoat-tian kiam chip-heng koan-h? long-s?, lim-gia?p , kap si?t-phin e lian-pang hoat-lu?t.