83013453 Quali-Pro 2.5 Gallon Ethephon 2SL Growth Regulator. This is a systemic, foliarly absorbed Type 2 PGR that promotes lateral growth in turf while limiting top growth and suppressing seed heads of Poa and white clover. Regulates growth of turf grasses. Use for elimination of undesirable fruit on apple, crabapple, carob and olive trees.