<font color="blue"> I presume the seeds will still produce?? </font>
The answer to your question is .... "probably". If it's just the flower head, you probably got them but if the seed head had formed then probably not and you will be spraying again. A lot depends on what herbicide you used and at what concentration and how it works to kill the weeds. Then there are the variables like, "Did you use surfactant, your tractor speed and the delivery rate of your sprayer". Get it all right and the weeds die, get one or more parts wrong and as Egon says, "You're replanting grass". It's usually a case of more is not better. 3 acres in under an hour seems a little on the fast side to me for proper coverage, faster than I go on the yard, but it can be done if you get the sprayer calibration right and keep the speed constant at what you calibrated at for correct coverage rate. You've probably got a longer boom than me. I only use a 6 footer and you probably use a 10 footer. Good luck with killing the dandilions ... I hate those things. I have a neighbour who only cuts his pasture once a year and never sprays. If the wind is blowing in the right direction my yard is covered with them every spring. Still, it's a good excuse to get on the tractor and go kill something.
