treefarm

for num=1,64 do
 turtle.select(1)
 turtle.place()
 turtle.select(2)
 do sleep 0.5
 turtle.place()
 turtle.dig()
 turtle.forward()
while turtle.detectUp() do
 turtle.digUp()
 turtle.up()
 end
while turtle.detectDown()==false do
 turtle.down()
 end
 turtle.back()
 end