function crop(row)
	local success, thisone = turtle.inspectDown()
	if thisone.state then
	if thisone.state.age == 7 then
		if row % 2 == 1 then
			turtle.select(1)
		else
			turtle.select(2)
		end
		turtle.digDown()
		turtle.placeDown()
	end
	end
	turtle.forward()
end

function fueled()
	if turtle.refuel(0) > 150 then
		return true
	else
		return false
	end
end

local progress = {}
if fs.exists("farm_progress") then
	local progressFile = fs.open("farm_progress","r")
	local progressString = progressFile.readAll()
	progress = textutils.unserialize(progressString)
	progressFile.close()
else
	progress.timeLeft = 1200
end
while fueled() do
	for i=progress.timeLeft,1,-1 do
		local progressFile = fs.open("farm_progress","w")
		local progressFile.write(textutils.serialize(progress))
		progressFile.close()
		sleep(1)
	end
	for x=1,9 do
		for y=1,8 do
			crop(x)
		end
		if x < 9 then
			if x % 2 == 1 then
				turtle.turnLeft()
				crop(x)
				turtle.turnLeft()
			else
				turtle.turnRight()
				crop(x)
				turtle.turnRight()
			end
		else
			turtle.turnLeft()
			turtle.turnLeft()
			for j=1,2 do
				for i=1,8 do
					turtle.forward()
				end
				turtle.turnLeft()
			end
		end
	end
end