Effect of Bioherbicide on Giant Salvinia (IMAGE) Louisiana Tech University Caption This image displays the effect of a bioherbicide on giant salvinia just ten days after a single treatment was applied. Credit Louisiana Tech University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.