Rubber farm

turtle.refuel()

function plant()
	turtle.forward()
	turtle.select(2)
	turtle.place()
	turtle.select(1)
	turtle.turnLeft()
	turtle.turnLeft()
	turtle.forward()
	turtle.turnLeft()
	turtle.turnLeft()
end

function harvest()
	turtle.down()
	turtle.dig()
	turtle.forward()
	i = 0
	a = 0
	while turtle.detectUp() do
                if turtle.getFuelLevel() < 10 then
                        turtle.refuel(4)
                end

        turtle.digUp()
        turtle.up()
        i = i+1

	end

        while i > a do
                if turtle.getFuelLevel() < 10 then
                        turtle.refuel(4)
                end

                turtle.down()
                a = a+1
        end

	turtle.turnLeft()
	turtle.turnLeft()
	turtle.forward()
	turtle.forward()
	turtle.drop(64)

	turtle.turnLeft()
	turtle.turnLeft()
	turtle.forward()
end

plant()
	turtle.forward()
	turtle.up()
while true do


	if turtle.detect() == "true" then
		turtle.down()
		turtle.turnLeft()
		turtle.turnLeft()
		turtle.forward()
		turtle.turnLeft()
		turtle.turnLeft()
		harvest()

		plant()
		turtle.forward()
		turtle.up()
	end

end