Abstract: The present invention discloses that a plant essential oil, lemongrass oil, is an effective pre and post emergence herbicide on both broadleaved and grass weeds. The lemongrass oil may be combined with corn oil and/or other oil and/or an organic acid, surfactants and other formulation ingredients to control the germination and growth of weeds. As a natural, non-toxic compound, it can be used as a safe alternative for weed control in organic farming systems.

Abstract: The present invention discloses that a natural tropolone compound, hinokitiol, also known as ?-Thujaplicin as an effective biopesticide for use in controlling plant pests. In particular, hinokitiol and/or salts thereof may be used in modulating non-Erwinia plant microbial infection or in the formulation of a non-Erwinia antimicrobial agent. Alternatively, hinokitiol may be used as a natural herbicide to control the germination and growth of weeds. The formulation used in the present invention may contain a chelator, pH adjustor and UV protection agent in an amount effective to stabilize said hinokitiol.

Abstract: The present invention discloses that, formic acid or salt thereof, is an effective pre-emergent and post-emergent herbicide. Formic acid biodegrades to carbon dioxide and water thus posing not threat the environment. With proper formulation and the use of respiratory protection, formic acid also poses no threat to the applicator. Formic acid is demonstrated in this invention to control both monocotyledonous and dicotyledonous plants.