Scotland Bill

I shall again raise the two points that I raised in relation to clause 29. Can the Scottish Government vary the tax rate applied to different parts of Scotland, and can they further devolve the power to local government to a greater or lesser extent if they so wish? I presume that the Scottish tax rate could be different from the rate that applies in England. If so, what measures can be taken to stop the flow of waste towards the part of the country that has the lower rate of landfill tax?