Abstract: A method for controlling, preventing, reducing or eradicating the instances of plant-pathogen infestation or plant diseases on a plant, plant organ, plant part, or plant propagation material is provided. The method comprises applying to a plant, plant part, plant organ or plant propagation material, or to soil surrounding said plant, a pesticidally effective amount of any one of compounds selected from the group consisting of dihydroquinidine and dihydroquinine, or agriculturally acceptable salts thereof, or a pesticide composition comprising any one of them, wherein said plant-pathogen is a member selected from a Heterokontophyta of the class Oomycota and a Heterokontophyta of the order Peronosporales. A pesticide composition comprising any one of the compounds selected from the group consisting of dihydroquinidine and dihydroquinine, or an agriculturally acceptable salt thereof as an active pesticidal ingredient is further provided.

Abstract: A composition comprising at least one compound of Formula (I), or an agriculturally acceptable salt thereof as an active pesticidal ingredient is provided. Non-limiting examples of the compounds are Cardol triene, Cardanol triene and Cardol diene. A method for controlling, preventing, reducing or eradicating the instances of plant-pathogen infestation on a plant, plant organ, plant part, or plant propagation material is further provided, the method comprising: applying to a plant, plant part, plant organ or plant propagation material, or to soil surrounding said plant, a pesticidal effective amount of an active agent comprising at least one compound of Formula (I), such as Cardol triene, Cardanol triene and Cardol diene, or a pesticide composition comprising at least one of them, wherein said plant-pathogen is a member selected from: a member of the family Pythiaceae, a member of the class Agaricomycetes, and a member of the order Pseudomonadales.

Abstract: A composition comprising Licochalcone C or an agriculturally acceptable salt thereof as an active pesticidal ingredient is provided. A method for controlling, preventing, reducing or eradicating the instances of plant-pathogen infestation on a plant, plant organ, plant part, or plant propagation material is further provided, the method comprising: applying to a plant, plant part, plant organ or plant propagation material, or to soil surrounding said plant, a pesticidal effective amount of Licochalcone C or a pesticide composition comprising it, wherein said plant-pathogen is a member selected from: an order of the class Agaricomycetes; a genus of the family Pythiaceae, a genus of the family Sclerotiniaceae selected from Sclerotinia and Fusarium, and family of the order Pseudomonadales.

Abstract: Derivatives of 1-phenyl-tetralin were found to be pesticidally active having high efficiency against several Basidomyceta, Ascomycota and Heterokontophyta fungi as well as protobacteria of the genus Pseudomonas.

Abstract: A composition comprising pinocembrin dihydrochalcone or an agriculturally acceptable salt thereof as an active pesticidal ingredient is provided. A method for controlling, preventing, reducing or eradicating the instances of plant-pathogen infestation on a plant, plant organ, plant part, or plant propagation material is further provided, the method comprising: applying to a plant, plant part, plant organ or plant propagation material, or to soil surrounding said plant, a pesticidal effective amount of an active agent comprising pinocembrin dihydrochalcone or a pesticide composition comprising it, wherein said plant-pathogen is a member selected from: a genus of the family Sclerotiniaceae selected from Fusarium and Sclerotinia; a Peronosporales of the families Pythiaceae and Peronosporaceae; a Basidiomycota of the class Agaricomycetes and Pucciniomycetes; and an order of Gamma Proteobacterium selected from Enterobacteriales, Xanthomonadales and Pseudomonadales.

Abstract: A composition comprising neo-bavaisoflavone or an agriculturally acceptable salt thereof as an active pesticidal ingredient is provided. A method for controlling, preventing, reducing or eradicating the instances of plant-pathogen infestation on a plant, plant organ, plant part, or plant propagation material is further provided, the method comprising: applying to a plant, plant part, plant organ or plant propagation material, or to soil surrounding said plant, a pesticidal effective amount of an active agent comprising neo-bavaisoflavone or the pesticide formulation of claim 1, wherein said plant-pathogen is a member selected from: a class of Basidomycetes selected from Pucciniomycetes and Agaricomycetes; an oomycete of the family Pythiaceae; a bacterium of the order Pseudomonadales; and an Ascomycete of the family Sclerotiniaceae.