Abstract

The development of weed resistances to manyselective herbicides and the prohibitive expense anddifficulty associated with the development of newherbicides, a need has arisen to seek alternatives toaddress these challenges. Along with the efforts todiscover new herbicide target sites in plants, biotechnologyis making major contributions in broadening cropselectivity to the already existing and effectiveherbicides. Further efforts to create more herbicidetolerant crops are needed to ensure more economicalcrop production and safeguard environmental quality byreducing the demand for and the number of selectiveweed killing chemicals required for economical chemical crop protection.

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