The key to successfully establishing any forage is to seed it into a firm, moist seedbed. Those conditions exist in a field with standing stubble. Seeding at such a low rate shouldn't be a problem for newer model air delivery systems. The straw should have been chopped and spread and the chaff spread evenly over the width of the swath. It should be seeded into fields that haven't been treated with these herbicides for at least 2 years.
Weed control is very important in timothy.
Fields that received a preharvest treatment in 1997 can be seeded to timothy in 1998. Seeding should be delayed until 1999 in untreated fields. Once the stand is established, 2,4-D will keep a check on the broad leaf weeds. When older stands begin to get a little quack grass moving into them, it's suggested the new quack grass patches be cut and baled separately. There is a debate among forage specialists about whether or not a cover crop is required when seeding forages.