Applicants have developed novel methods and compositions for treating, preventing or ameliorating the effects
plant phytopathogen
infestation in plants, including of
Candidatus Liberibacter spp. the causal agents of citrus
greening and potato zebrachip
disease. Novel compositions include one or more active agents of
aminocaproic acid, carbinoxamine maleate,
chloroxylenol, chlorpropamide, cinoxacin, duartin, and cyclopentolate
hydrochloride as well as their derivatives, or salt / acid forms thereof. Methods of preventing
disease development and
infestation by
plant pathogens are disclosed as well as methods of making, using and producing such compositions.