Harpin proteins have been shown to activate internal defense and growth mechanisms in plants. In turn, these mechanisms improve cotton's overall plant health and yield potential by improving vigor, stamina, nutrient uptake, and reproductive growth and by initiating natural self-defense mechanisms.

ProAct^TM is a new plant health regulator from Eden Bioscience. ProAct is based on Harp-N-Tek^TM, a proprietary harpin protein technology. ProAct is a foliar-applied, second-generation harpin product that contains 1% harpin as the active ingredient.

Findings are reported from a series of commercial field trials conducted in 2004 and 2005 by a licensed, independent agricultural consultant firm located in Louisiana. All tests were conducted in commercial fields. Plant growth, maturity measurements, and yield were recorded.