I have a weed growing throughout my yard. The root system is extensive and thready and grows fairly deep into the soil. There are no rhizome or tubers. It became prevalent last spring/summer which I attributed it to the excessive moisture last year. I'm attaching two pictures. I was hoping you could identify it and give me some tips to eradicate it. Thank you.
This looks like perennial orchardgrass. Please refer to our website for information on how you can manage it. https://extension.umd.edu/hgic/topics/orchardgrass
Weeds in a lawn can result from improper mowing practices (mowing too short), frequent, shallow watering, poor-quality turf seed, and/or poor soil conditions (improper pH, soil compaction). Take a look at our information on lawn weed prevention and management. https://extension.umd.edu/hgic/topics/lawn-weed-id-and-management
In addition, here is information on repairing bare spots and overseeding.