RGrizzzz
Administrator
My belief is that it's a combination of low fertility, weed pressure and several bad droughts. It's maybe 1/5 of an acre under a power line, so 1-2lbs could help it. Sounds like drilling would be ideal.It really depends on a variety of factors. Images of the area or description on why it hasn't thickened up will help.
Very unlikely without great seed to soil contact you'd see any major improvement from that amount of seed. Think about a mature seed head on a switchgrass plant and how many seeds one head will produce annually...if the stand doesn't thicken up on its own, you'll have to help it in other ways than more seed most likely.