Nut Grass/Gophers In Coastal Field

Have to issues I need to remedy in my coastal field. One is I've got patches of nut grass that seem to multiply every year. They don't really hurt anything I guess, but I'd like to figure out how to get rid of them. I know I could ride around and spot spray each one but was wondering if there's something else I could put down. My other issue is gophers. I've got em bad. I know they make a gopher plow that puts poison down but can't find anyone that owns one and I can't see buying one just to use one time. Any other options there? Thanks

Nut Grass/Gophers In Coastal Field