Can I cut the silage tarp? How can I eradicate rhizomatic weeds like Nut Sedge, etc.? How long will my silage tarp last? How many sand bags will I need to hold the silage tarp in place? Is the silage tarp UV treated on both sides? What are the shipping weights and dimensions of your silage tarp? What is the difference between black silage tarps and clear plastic in weed management, or occultation and solarization? What is the thickness of your silage tarp? What is your silage tarp made of? Why is one side of the silage tarp black and the other white?