im a coach and take care of several fields on my own. We are in Southern California where a typical school field is a mixture Bermudagrass (mostly), Poa Annua, Kikuyu, Ryegrass, and a lot of other weeds. On one field we had good success with Trimec last February, but now we are dealing with crabgrass issues and Poa Annua demise in may areas. I would like to establish a cultural system that will deal with the common issues on a school budget. We mow the outfield to 2.5 inches typically. Right now the large bare patches where the poa and other cool season grasses have died are quite bare. I can't decide if we should try to eradicate the Poa or try to love with it because during g the Spring season it's easy to keep green. So questions are as follows: Field 1 - primarily Bermuda, good stand with not much Poa or Rye. Significant crabgrass at various stages. Do I treat the CG or wait until spring for pre-emergent? Is dimension a good option here? Fields 2-4: significant patches of cool season grass demise in primary bermudagrass. Variety of broadleaf weeds as well. I have no idea what to do first on these fields. Do I try to get the Bermuda to fill in first? Kill the broad leafs? Kill the cool season? Use pre-emergent for the Poa? Any advise would be appreciated, and if I didn't post enough info, I will gladly post more. Thank you.