Answer: A tsunami is a giant wave (or series of waves) created by an undersea earthquake, volcanic eruption or landslide. Tsunamis are often called tidal waves, but this is not an accurate description because tides have little effect on giant tsunami waves.nswer: A tsunami is a giant wave (or series of waves) created by an undersea earthquake, volcanic eruption or landslide. Tsunamis are often called tidal waves, but this is not an accurate description because tides have little effect on giant tsunami waves.
Roundup is not persistent in the soil. You can lay your sod one week after spraying the weeds. The herbicide will get into the growth of any plant it touches, not anything the chemical does not touch. I don't know of a pre-m herbicide that controls germination of any weeds likely to grow this time of year. Pre-m only prevents weed seeds from germinating.
Rating Newest Oldest. Best Answer: Since glyphosate (Roundup) is a post emergent (after the weed is growing) herbicide, the minimum temperature is related to the weed being controlled. The weed needs to be actively growing in order for the herbicide to be absorbed.t 35 deg. there is very little growth in most plants and thus very little herbicide absorption. Wait until a warm day, when the weed is actively growing and the effectiveness will be greatly improved. Roundup has no soil activity, so it does not work on weeds that have not already germinated and are actively growing.