New Farm (1.5.2)

function dropLoot()
    turtle.select(3)
    turtle.dropDown()
    turtle.select(4)
    turtle.dropDown()
end

function getMeal()
    turtle.turnRight()
    turtle.suck()
    turtle.turnLeft()
end

while (true) do
    turtle.select(1)
    turtle.place()
    turtle.select(2)
    if(turtle.place()) then
        while (turtle.getItemCount(2) == 0) do
            getMeal()
        end
    else
    if(turtle.getItemCount(2) == 0) then
        getMeal()
    else
        turtle.select(1)
            turtle.dig()
            dropLoot()
    end
    end
end