Ciba-geigy Corporation

Novartis Finance Corporation

Syngenta Investment Corporation

Novartis Ag

Wilhelm Ruess

Helmut Kessmann

Gertrude Knauf-Beiter

Ludwig Mittermeier

Ruth Beatrice Kung

Theodor Staub

Ruth Beatrice K&uuml;ng

Michael Oostendorp

Jurg Eberle

Pierre Urech

Scott Joseph Uknes

John A Ryals

Leslie B Friedrich

Antonio Molina-Fernandez

Gertrud Knauf-Beiter

Crop protection products

Plant-protecting mixtures of active ingredients having a synergistically increased action, wherein component I is a compound having a plant-immunizing action of the formula I

Plant-protecting mixtures of active ingredients having a synergistically increased action, wherein component I is a compound having a plant-immunizing action of the formula I ##STR1## in which Z is CN, COOH or a salt thereof, CO--OC.sub.1 -C.sub.4 alkyl or CO--SC.sub.1 -C.sub.4 alkyl; and wherein component II is a compound selected from the group consisting of propiconazole, difenoconazole, penconazole, fenpropimorph, fenpropidine, cyprodinil, metalaxyl, R-metalaxyl and pyroquilon.

The present invention concerns a method of protecting plants from pathogen attack through synergistic disease resistance attained by applying a conventional microbicide to immunomodulated plants. Immunomodulated plants are those in which SAR is activated and are therefore referred to as 'SAR-on' plants. Immunomodulated plants may be provided in at least three different ways: by applying to plants a chemical inducer of SAR such as BTH, INA, or SA; through a selective breeding program based on constitutive expression of SAR genes and/or a disease-resistant phenotype; or by transforming plants with one or more SAR genes such as a functional form of the NIM1 gene. By concurrently applying a microbicide to an immunomodulated plant, disease resistance is unexpectedly synergistically enhanced; i.e., the level of disease resistance is greater than the expected additive levels of disease resistance.

Method for protecting plants

Plant-protecting active ingredient mixtures having synergistically enhanced action, wherein component I is a compound having plant-immunising action of formula I ##STR1## wherein Z is CN, COOH or a salt thereof, CO--OC.sub.1 -C.sub.4 alkyl or CO--SC.sub.1 -C.sub.4 alkyl;

Plant-protecting active ingredient mixtures having synergistically enhanced action, wherein component I is a compound having plant-immunising action of formula I ##STR1## wherein Z is CN, COOH or a salt thereof, CO--OC.sub.1 --C.sub.4 alkyl or CO--SC.sub.1 --C.sub.4 alkyl; and wherein component II is a compound selected from the group

Mixtures of certain triazole fungicides (component I) and 4-cyclopropyl-6-methyl-N-phenyl-2-pyrimidinamine (component II) have a synergistically increased activity against fungus infestation. Components I and II can also be applied to crops individually in immediate succession.

Compositions and methods of combatting fungi employing triazoles and a

Microbicides

The combination of the plant microbicide 1-[2-(2,4-dichlorophenyl)-4-propyl-1,3-dioxolan-2-ylmethyl]-1H-1,2,4-triaz ole (=propiconazole) with the plant microbicide 1-{2-[2-chloro-4-(4-chlorophenoxy)-phenyl]-4-methyl-1,3-dioxolan-2-ylmethy l}-1H-1,2,4-triazole results in an increased activity in the control of plant diseases. Plant microbicidal compositions based on such combinations are suitable especially for controlling diseases in cereals.

Microbicidal compositions

The invention relates to plant protection compositions based on a two-component system of plant fungicides, one of which is 1-[2-(2,4-dichlorophenyl)pentyl]-1H-1,2,4-triazole and the other is an N-haloalkanesulfenylphthalimide derivative. In the range from 1:3 to 1:100 the disclosed mixtures display enhanced fungicidal activities.

Compositions for controlling plant diseases and the use thereof in plant

The invention relates to plant protection compositions based on a two-component system of plant fungicides, one of which is 1-[2-(2,4-dichlorophenyl)pentyl]-1H-1,2,4-triazole and the other is Mancozeb, which is an [ethylenebis(dithiocarbamato)]manganese complex with [ethylene-bis(dithiocarbamato)]zinc of the formula II ##STR1## In the range from 1:3 to 1:100 the disclosed mixtures display enhanced fungicidal activities.

Growing community of inventors

Pfeffingen, Switzerland

Wilhelm Ruess