Computercraft Turtle Crop Farming

-- Seeds in slot 1
-- bone meal in slot 2
-- Call the program by the name of the program, space, and the number of items in the smallest stack
-- Works with all crops except corn and cacti.
-- requires Farming Turtle, block of dirt in front of and one block down from the turtle, and a
-- jungle wood log two blocks in front of the turtle for coco beans.

local plants = {...}

if plants[1] > turtle.getItemCount(2) then
    print("Not enough bone meal in slot 2")
    return
elseif plants[1] > turtle.getItemCount(1) then
    print("not enough seeds in slot 1")
    return
end
for i=1,plants[1] do
    turtle.dig()
    turtle.select(1)
    turtle.place()
    turtle.select(2)
    turtle.place()
    turtle.up()
    turtle.dig()
    turtle.down()
    turtle.dig()
end