ess = "dirt"
computerN = 1
harv = "minecraft:harvester_te_"
harvester = peripheral.wrap(harv)
while true do
    list = harvester.list()
	if list ~= nil then
		for k, v in pairs(list) do
			if string.match(v.name, ess) ~= nil then
				harvester.pushItems("minecraft:chest_1", k, 64)
			elseif string.match(v.name, "fert") ~= nil then
				harvester.pushItems("minecraft:chest_0", k, 64)
			else
				if rednet.isOpen("right") == false then rednet.open("right") end
				rednet.send(4, computerN)
				sleep(.5)
				if rednet.isOpen("right") == true then rednet.close("right") end
			end
		end
	end
    sleep(.5)
end