Hybrids containing Herculex I will also exhibit tolerance to glufosinate-ammonium herbicides, such as Liberty®. Why is this and why is it important?
The PAT protein, expressed by the PAT gene inserted into plants containing Herculex I, confers tolerance to glufosinate-ammonium herbicides. The PAT protein is an enzyme that catalyzes the conversion of the active ingredient in glufosinate-ammonium to an inactive form, thus detoxifying the glufosinate-ammonium herbicide. Plants possessing this tolerance can be sprayed with glufosinate-ammonium herbicides. These are a class of post-emergence herbicides that are broad spectrum, systemic, and non-selective, allowing weed control after the emergence of the corn plants. You can use Liberty herbicide, or stick with your conventional weed control program.
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