while true do
if rs.getInput("back", true) then

	sleep(1)
	--send signal to fertilize the plant
	rs.setOutput("right", true)
	sleep(1)
	rs.setOutput("right", false)
	sleep(1)
	rs.setOutput("right", true)
	sleep(1)
	rs.setOutput("right", false)

	--harvest plant
	turtle.dig()

	--plant new seed
	turtle.drop(1)

else
	turtle.suck()
	sleep(20)
	print("Waiting for input")
end
end