Is Yates Weed & Feed Granular safe to use on my carpet grass lawn

Hi could you please advise whether Yates Weed & Feed Granular is safe to use on my carpet grass lawn? It was once beautiful and lush but in the dry weather has been overtaken by all sorts of weeds, including clover and paspalum. There is also a strange kind of grass growing over the top of it all - see photo. I am looking for something that will kill the weeds and give the carpet grass a bit of a boost. Thanks!