Round-up Ready Soybeans

        I'm doing some reseach for my family that farms around a 1,000
acres of corn and soybeans in Indiana.  They are considering round-up ready
soybeans b/c neighboring farmers are reporting lower herbicide costs.

        Can anyone point me to resources and information about round-up
ready soybeans, long-term implications for weed control as well as the many
other issues surrounding this?

Thanks in advance!

Nathan Boone