SK47394A3 - Method of improvement of growth and/or health of plants, especially cereals with acting of derivative of triazole type - Google Patents

Abstract

Method for improving the health and vigour of plants, characterised in that, before sowing, the seeds are treated with a triazole of formula (I). The multiplication products of the plants coated with the composition according to the invention, and this composition. <IMAGE>

Description

Technical field

The invention relates to a method for improving the growth of plants independently of the diseases with which they can be attacked.

BACKGROUND OF THE INVENTION

The European patent application describes a curative or preventive treatment of plant propagation material and plants derived therefrom against fungal diseases by applying to the propagation material of a fungicidal composition comprising 2- (4-chlorobenzylidene) -5,5-dimethyl-1 (1H-1, 2,4-triazol-1-ylmethyl-1-cyclopentanol, an inert and agriculturally acceptable carrier, and optionally an agriculturally acceptable surfactant.

As already mentioned, the invention relates to a detailed specification of a method which aims to improve the growth or health of plants, in particular cereals, irrespective of the diseases with which these plants can be attacked and which are believed to attack the plants. If this intention is specified more precisely, the object of the invention is to:

improving plant health, and / or

contributing to shortening the plant stem, and / or

improving resistance to drowning (even in the absence of steblolam, and / or

- an increase in the nitrogen content absorbed by the plants from the soil, and / or

- reducing the amount of nitrogen that must be supplied to the plant in the form of fertilizer or manure.

The invention also relates to an agrochemical composition intended to improve the growth and health of plants, in particular cereals, irrespective of the diseases with which these plants can be attacked or likely to attack, within one or more of the above objectives. Specified in other words, the invention relates to agrochemical compositions for:

improving plant health, and / or

contributing to shortening the plant stem, and / or

improving the resistance of plants to lodging (even in the absence of steblolam, and / or

an increase in the nitrogen content absorbed by the plants from the soil, and / or

- reducing the amount of nitrogen that must be supplied to the plant in the form of fertilizer or manure.

Finally, the invention relates to propagation material intended to give birth to plants, in particular cereals, having improved growth and health, irrespective of the diseases with which those plants may be infected or likely to attack, the propagation material being characterized by: that it is able to provide plants:

improved health, and / or

- under certain conditions with a shortened stalk, and / or

with improved resistance to drowning (even in the absence of steblolam, and / or

with an increased nitrogen content absorbed by the plants from the soil, and / or

- requiring less nitrogen to be supplied to plants as fertilizer or manure.

SUMMARY OF THE INVENTION The present invention is based on the treatment of triazole

It has now been found to force the treatment according to the invention to have the aforementioned objectives and the seeds before sowing with the active formula I can be achieved by the grain or general

in which

Ά represents a group -CR ₆ R 7 - or a group -CR ₆ R 7 -CR _e R 8 - or a group -CR ₆ R 7 -CR ₈ R 8 -CR ₁₀ R 11 -,

X represents a halogen atom, preferably a fluorine atom, a bromine atom and a chlorine atom, or a cyano or nitro group or a (C1-C4) alkyl group or an optionally halogenated (C1-C4) alkoxy group; as 6 or zero, and if n is greater than 1, then X may be the same or different,

R 1 and R 2, which are the same or different, represent a hydrogen atom or a C 1 -C 4 alkyl group which is optionally substituted, for example by one or more substituents selected from the group consisting of a halo4 gene, a C 1 -C 4 alkoxy group , mono- or polyhalogenated (C 1 -C 4) alkoxy, (C 2 -C 4) alkenyl, (C 2 -C 4) alkynyl, (C 2 -C 4) mono- or polyhalogenated alkenyl and mono- or polyhalogenated (C 4 -C 4) alkynyl (C až-C 4) alkoxy group, optionally substituted by, for example, one or more substituents selected from the group consisting of halogen, (C až-C alko) alkoxy, (C až-C alko) alkoxy, a mono- or polyhalogenated alkoxy group having 1 to 4 carbon atoms; C 1 -C 4 alkenyl, C 2 -C 4 alkynyl, C 2 -C 4 mono or polyhalogen and C 2 -C 4 mono- or polyhalogenated alkynyl; C 3 -C 7 cycloalkyl, C 6 -C 10 aryl, especially phenyl, C 7 -C 11 aralkyl, especially benzyl, the various groups being optionally substituted, for example with one or more substituents selected a halogen atom, a (C1-C4) alkyl group, a mono- or polyhalogenated (C1-C4) alkyl group, a (C1-C4) alkoxy group and a mono- or polyhalogenated (C1-C4) alkoxy group; carbon

R 1 and R 1 together can form a hydrocarbon chain of 2 to 5 carbon atoms and form a ring with the carbon atom to which R x and R ₂ are bonded, said chain being optionally substituted as described above for an aryl group of 6 to 10 carbon atoms, or R x and R ₂ may together form, with the carbon atom to which R x and R ₈ are attached, a 2 to 5 carbon dioxolane chain, which chain is optionally substituted as above for an ary 5 aryl group having 6 to 10 carbon atoms .

R 3 and R 6 to R 11, which are the same or different, represent a hydrogen atom or a C 1 -C 4 alkyl group which is optionally substituted, for example by one or more substituents from the group consisting of halogen, alkoxy and mono- or polyhalogenated alkoxy C 1 -C 4; C 3 -C 7 cycloalkyl, C 6 -C 10 aryl, especially phenyl, C 7 -C 11 aralkyl, especially benzyl, the various groups being optionally substituted, for example with one or more substituents selected a halogen atom, a (C 1 -C 4) alkyl group, a mono- or polyhalogenated (C 1 -C 4) alkyl group, a (C 1 -C 4) alkoxy group and a mono- or polyhalogenated (C 1 -C 4) alkoxy group, or also two groups adjacent to the A chain form, together with the A atoms to which they are attached, a phenyl ring fused to the cycloalkane,

R 5 represents a hydrogen atom, an alkyl group which is optionally substituted, for example by one or more substituents from the group consisting of a halogen atom, a C 1 -C 4 alkoxy group, a mono- or polyhalogenated C 1 -C 4 alkoxy group, a C 2 alkenyl group (C 4 -C 4) alkylene, (C 2 -C 4) alkynyl, (C 2 -C 4) mono- or polyhaloalkenyl, and (C 2 -C 4) mono- or polyhalogenated alkynyl; C 3 -C 7 cycloalkyl, C 6 -C 10 aryl, in particular phenyl, C 7 -C 11 aralkyl, especially benzyl, the various groups being optionally substituted, for example with one or more substituents of a halogen atom, a (C 1 -C 4) alkyl group, a mono- or monosubstituted alkyl group;

Rs

R X 3

RX 2 Rx is a C 1 -C 4 -halogenated alkyl group, a C 1 -C 4 -alkoxy group and a mono- or polyhalogenated C 1 -C 4 -alkoxy group, or is a C (= O) -R ± _{3 group} , where it is an alkyl group C 1 -C 4 optionally substituted, for example by one or more substituents from the group consisting of halogen, C 1 -C 4 alkoxy, C 1 -C 4 mono- or polyhalogenated alkoxy, C 2 -C 4 alkenyl 4. carbon atoms, a (C 2 -C 4) alkynyl group, a (C 2 -C 4) mono- or polyhalogenated alkenyl group and a (C 2 -C 4) mono- or polyhalogenated alkynyl group; C 3 -C 7 cycloalkyl, C 6 -C 10 aryl, in particular phenyl, C 7 -C 11 aralkyl, especially benzyl, the various groups being optionally substituted, for example with one or more substituents of a halogen atom, a (C 1 -C 4) alkyl group, a mono- or polyhalogenated (C 1 -C 4) alkyl group, a (C 1 -C 4) alkoxy group and a mono- or polyhalogenated (C 1 -C 4) alkoxy group; C 4 -C 4 alkenyl, C 2 -C 4 alkynyl, C 2 -C 4 mono- or polyhalogen and C 2 -C 4 mono- or polyhalogenated alkynyl R _, with the exception of C (= O) -Rx5, represents a hydrogen atom, a halogen atom, especially a chlorine atom or a bromine atom, an alkyl group having 1 to 4 carbon atoms which is optionally substituted, for example by one or more substituents from the group a halogen atom, a C 1 -C 4 alkoxy group, a mono- or polyhalogenated C 1 -C 4 alkoxy group, a C 2 -C 4 alkenyl group, a C 2 -C 4 alkynyl group, a mono- or polyhalogenated C 2 alkenyl group up to 4 carbon atoms and a mono- or polyhalogenated alkynyl group having 2 to 4 carbon atoms; C 3 -C 7 cycloalkyl, C 6 -C 10 aryl, in particular phenyl, C 7 -C 11 aralkyl, especially benzyl, the various groups being optionally substituted, for example with one or more substituents from 3 to 7 carbon atoms; a halogen atom, a C 1 -C 4 alkyl group, a mono- or polyhalogenated C 1 -C 4 alkyl group, a C 1 -C 4 alkoxy group, and a mono- or polyhalogenated C 1 -C 4 alkoxy group.

The invention also relates to the use of salts of the compounds of the formula I. These salts are agriculturally acceptable salts, including: hydrochlorides, sulfates, oxalates, nitrates or arylsulfonates, as well as addition complexes of these compounds with metal salts and in particular iron, chromium, copper salts. , manganese, zinc, cobalt, tin, magnesium and aluminum.

In the light of these documents, if no clarification is given, these groups are branched or linear groups. The term optionally halogenated means mono- or polyhalogenated.

The compounds of formula (I) may exist in one or more isomeric forms, depending on the number of asymmetric centers in the molecule. The invention thus relates to the use of all optical isomers as well as their racemic mixtures and the corresponding diastereoisomers. Resolution of these diastereoisomers and / or optical isomers may be accomplished by known methods.

In the general formula I, the wavy line means that the stereochemistry of the double bond may be of the form E or Z without distinction, or it may have the configuration corresponding to a mixture of both. To take account of steric hindrance, the major form is the form in which R 12 is in position E in view of the R, R _4th Form E is practically exclusively the form obtained when R 12 is a hydrogen atom.

Compounds useful in the present invention include those whose formula meets one or more of the following conditions:

- n is 1 or 2 and X is a halogen atom in the para-position when n is 1, and in the meta- and para-position or in the ortho- and para-position when n is 2, and / or

- n is 1 and X is in para-position and / or

- X represents a chlorine atom and / or

R ₃ = Re = R 5 = R 10 = hydrogen and / or

- R4 = Rt = R5 > = R11 = hydrogen or C1-C4alkyl; and / or

- R 1 and R 2 are selected from the group consisting of methyl, ethyl and hydrogen, and / or

- R 5 represents a hydrogen atom or a C 1 -C 4 alkyl group, very preferably R 5 represents a hydrogen atom and / or

- R 12 represents a hydrogen atom and / or

- A is CR ₆ R? or a group -CRsRvCRsRs. and / or

- A represents CR e R v, R 1 and R 2 are selected from the group consisting of methyl and ethyl, R ₃ and R 5 to R 6; and R 1a represents a hydrogen atom, R ₄ represents a methyl group, an ethyl group, an n-propyl group, an i-propyl group and a hydrogen atom and / or

- A is -CR e R 6 CR 8 R 8 -, wherein R 1 and R 4 are selected from the group consisting of methyl, ethyl or hydrogen, R 5 and R 5 to R 6, and R 12 is hydrogen, R ₄ is methyl, ethyl a group, an n-propyl group, an i-propyl group, and a hydrogen atom.

The following compounds are preferred:

2- (4-chloro-benzylidene) -5-methyl-5-ethyl-l- (1 H-1,2,4-triazol-l-ylmethyl) -l-cyclopentanol,

2- (4-chloro-benzylidene) -6-methyl-l- (lH-l, 2,4-triazol-ylmethyl) -l-cyclohexanol,

- 2- (4-chlorobenzylidene) -6,6-dimethyl-1 '- (1H-1,2,4-triazol-1-ylmethyl) -1-cyclohexanol,

2- (4-chlorobenzylidene) -1- (1H-1,2,4-triazol-1-ylmethyl) -1-cyclohexanol and / or especially 2- (4-chlorobenzylidene) -5,5-dimethyl-1- (1H -l, 2,4-triazol-l-ylmethyl) -l-cyclopentanol.

The term propagation material is understood here to mean all parts of the plant that can be used to propagate the plant. Examples of such promotional material are grain (seeds in the narrower sense), roots, fruits, tubers, onions, wildebeest, parts of plants. Also mentioned are sprouted plants and young plants which have to be transplanted after germination or emergence from the soil. These young plants can be protected against transplantation by partial or total immersion in a bath containing the active ingredient.

In the case of other crops, grain is preferred in addition to potatoes. Suitable promotional materials that can be used in the present invention are:

- seed of dicotyledonous plants: me, cotton, sunflower, rapeseed peas, oilseed, cucumber, melon, soap beans, flax, beets,

- grain rye, monocotyledonous plants: cereals (wheat with the exception of the talent of wheat before the start of offshooting, barley, oats), maize, rice,

- or potato tubers.

Preferably, the grain and seeds are coated with 0.1 to 500 g of active ingredient per 100 kg of grain or seed, preferably 1 to 400 g of active ingredient per 100 g of grain or seed.

In the case of another substance, 0.1 to

Ω <

the tubers are preferably coated with tubers in an amount corresponding to the tuber pickling in the composition containing 100 g / l of active ingredient.

The invention also provides the use of a triazole of formula I for the manufacture of agrochemical compositions for:

improving plant health, and / or

shortening of plant lamps, and / or

improving resistance to drowning (even in the absence of steblolam), and / or

- an increase in the nitrogen content absorbed by the plants from the soil, and / or

- reducing the amount of nitrogen that must be supplied to plants in the form of fertilizer or manure.

The present invention further provides the use of a triazole of the formula I according to the invention for obtaining plant propagation material capable of providing plants:

improved health, and / or

- under certain conditions with a shortened stalk, and / or

- with improved resistance to sagging (even in the absence of steblolam), and / or

with an increased nitrogen content absorbed by the plants from the soil, and / or

- requiring less nitrogen to be supplied to plants as fertilizer or manure.

The compositions according to the invention usually contain 0.5 to 95% of active ingredient. The remainder to 100% consists of the carrier and optionally various excipients which are described in the following.

As used herein, a carrier is an organic or mineral, natural or synthetic material with which the active ingredient is mixed to facilitate its application to plants, grain or seeds, and soil. This carrier is therefore inert and must be agriculturally acceptable plants. This carrier can or synthetic silicates, fertilizers, etc.) or liquid (water, alcohols, ketones, petroleum fractions, aromatic or paraffinic hydrocarbons, chlorinated hydrocarbons, liquefied gases, etc.).

particularly acceptable for solid treatment (clays, natural silica, resins, waxes, solids)

The surfactant may be an emulsifying agent, a dispersing agent or a wetting agent of the ionic or non-ionic type. For example, polyacrylic acid salts, lignosulfonic acid salts, phenolsulfonic acid salts or naphthalenesulfonic acid salts, polycondensates of ethylene oxide with fatty alcohols, fatty acids or fatty amines, substituted with phenols (especially alkylphenols and arylphenols), salts of esters of sulfosuccinic acid (especially sulfosuccinic acid derivatives) (alkyl alkylsurates), phosphoric acid esters and alcohols or polyoxyethylated phenols. Often, the presence of at least one surfactant is desirable if the active ingredient and / or the inert carrier are not soluble in water and the delivery vehicle is water.

These compositions may also contain all kinds of other additives such as protective colloids, adhesives, reinforcing agents, thixotropic agents, penetrating agents, stabilizing agents, sequestering agents, pigments, dyes and polymers.

More generally, this specification can be formulated so that the compositions of the invention can be combined with all solid or liquid additives that correspond to conventional techniques for preparing formulations for the treatment of seeds in particular.

Accordingly, it should be noted that in the vocabulary of those skilled in the art the term seed treatment refers in fact to grain treatment.

Application techniques are well known to those skilled in the art and can also be used within the invention without any problems.

Among these techniques, for example, coating or encapsulation may be mentioned.

Generally, solid or liquid compositions may be mentioned.

Solid compositions include powders for dispersing or dispersing (containing up to 100% of the compound of formula I) and granules, in particular granules obtained by extrusion, impregnation of the granulated carrier, powder granulation (the content of the compound of formula I in these granules 1 to 80%).

When used as a powder for powdering, a composition containing 50 g of active ingredient, 10 g of finely divided silica, 10 g of organic pigment and 970 g of talc may be used. These ingredients are mixed and the mixture is ground, then applied by powdering.

Forms of liquid compositions or compositions intended to obtain liquid compositions immediately prior to application include solutions, in particular water-soluble concentrates, emulsifiable concentrates, emulsions, suspension concentrates, aerosols, wettable powders (or spray powders), pastes, granules and dispersible granules.

Emulsifiable or soluble concentrates most often contain 10 to 80% of the active ingredient, and for emulsions and solutions capable of immediate application, these emulsions and solutions contain 0.01 to 20% of the active ingredient.

For example, emulsifiable concentrates may, if necessary, contain, in addition to the solvent, 2 to 20% of appropriate additives such as stabilizing agents, surfactants, corrosion inhibitors, colorants, or the aforementioned adhesives.

From these concentrates, an emulsion with any desired concentration that is particularly suitable for seed treatment can be obtained by dilution with water.

Concentrated suspensions, which are also sprayable, are prepared so as to obtain a stable liquid product which does not settle, these concentrated suspensions usually containing 1 to 75% of active ingredient (preferably 2 to 50%), 0.5 to 15% of surfactant active agent, 0.1-10% thixotropic agent, 0-10% of appropriate additives such as pigments, dyes, antifoaming agents, corrosion inhibitors, stabilizing agents, penetrating agents and adhesives, and as a carrier water or an organic liquid in which poorly soluble or insoluble active ingredient: some solid organic substances or mineral salts may be dissolved in the carrier to help prevent sedimentation or serve as antifreeze agents.

Wettable powders (or powders for spraying) are usually prepared containing 1 to 95% active ingredient (preferably 2 to 80%), usually containing 0 to 5% wetting agent, 3 to 10% d of the dispersant in addition to the solid carrier. having 0 to 10% of one or more additives selected from the group consisting of stabilizing agents and other ingredients such as pigments, dyes, penetrating agents, adhesives, anti-caking agents, coloring agents and the like.

In order to obtain these powders for spraying or wetting of other powders, the active ingredients are mixed with the other ingredients in the appropriate mixture or mixture, then the mixture thus obtained is ground in mills or other suitable crushing and disintegrating devices. In this way spray powders are obtained which have advantageous wettability and suspensibility. These powders can be suspended in water to form suspensions of any desired concentration, and these suspensions are particularly advantageously useful for application to seeds and grain.

Pastes can be made instead of wettable powders. The conditions of preparation and use of these pastes are similar to those of wettable and sprayable powders,

Dispersible granules are usually prepared by agglomerating wettable powder compositions in suitable granulation systems.

As already mentioned, aqueous dispersions and emulsions, for example compositions obtained by diluting wettable powders or emulsifiable concentrate with water, are also within the general scope of the invention. These emulsions may be water-in-oil or oil-in-water emulsions and may have a dense composition such as mayonnaise.

Of these compositions, one of ordinary skill in the art will select those compositions that are suitable for the particular application conditions.

A further object of the invention is a plant propagation material with preferred variants as defined above, coated and / or containing 2- (4-chlorobenzylidene) -5,5-dimethyl-1- (1H-1,2,4-triazol-1-ylmethyl) 1-cyclopentanol, hereinafter referred to as triticonazole.

The term coated and / or comprising means that the active substance is predominantly on the surface of the propagation material during application, although, depending on the method of application, a larger or smaller proportion of the active substance may penetrate into the propagation material. If the material is transplanted, it absorbs the active ingredient.

Preferably, the propagation material comprises grain and seeds, preferably:

- dicotyledonous seeds, including peas, cucumber, soya, melon, cotton, sunflower, oilseed rape, beans, flax, beets,

- grains of monocotyledonous crops, which include soft winter wheat with the exception of the talent variety, soft spring wheat, durum wheat, barley, rye, oats, lantern, corn, rice.

Preferably, the grains or seeds are coated in an amount of 0.1 to 500 g of active ingredient per 100 kg of grain or seeds, preferably in an amount of 1 to 400 g per 100 kg of grain or seeds.

Another advantageous variant is that the propagation material is potato tubers, which are preferably coated with an amount of active substance corresponding to the pickling of said propagation material in a solution containing 0.1 to 100 g / l of active substance.

Preferably, the composition fulfilling the objectives of the invention is characterized in that the propagation material is grain and seeds:

dicotyledonous crops including peas, cucumber, soy, melon, cotton, sunflower, oilseed rape, beans, flax, beets,

- monocotyledons, including soft winter wheat with the exception of the talent variety, durum wheat, soft spring wheat, barley, caliber, corn, rice.

Preferably, the target-filling composition according to the invention is characterized in that it contains 0.5 to 95% of active ingredient.

In the following, the invention will be explained in more detail by means of specific examples thereof, which examples are for illustrative purposes only and are not intended to limit the scope of the invention, which is clearly defined by the wording of the claims.

DETAILED DESCRIPTION OF THE INVENTION

Example 1

The grain of soft winter wheat is treated with 120 g of triticonazole per 100 kg of wheat grain.

A concentrated suspension containing 200 g / l triticonazole and 84 g / l bird repellent is used for wheat treatment. This suspension is diluted with an equal amount of water and the resulting diluted mixture is applied to the wheat grain by spraying before sowing.

The sowing takes place in autumn (end of November). The soil contains 109 kg / ha of nitrogen and is enriched with 100 kg / ha of nitrogen in the form of manure (the first half in April, when the ear with a scape measures one centimeter, the second half in May at the growth stage of two knees).

The growth conditions were fungal-free conditions and were not affected by the fungi, the control plants being protected by guazatin (80 g / 100 kg) and later known antifungal treatments, so that these plants did not experience the effects of the triticonazole-treated plants.

It was observed that in the flowering period the biomass of the aerial parts of wheat (expressed as dry matter) was 9820 kg / ha for plants derived from triticonazole-treated grain and 8950 kg / ha for plants derived from non-triticonazole-treated grain.

This increase in biomass due to the effect of three tons of iconazole means that the plants are much more robust and healthier. Otherwise, the nitrogen content of the biomass dry matter was 1.7% for triticonazole-treated grains and 1.6% for triticonazole-treated grains. This means that triticonazole acts on plants to be more capable of absorbing nitrogen from the soil, thus allowing the doses of nitrogen supplied to the plants in the form of fertilizers to be reduced.

Finally, in the case of triticonazole-treated grains, the following were harvested:

8310 kg of grain per hectare,

150 kg / ha of grain-supplied nitrogen

- 14330 kg / ha biomass dry matter (rattan straw + usable for grain).

In contrast, when harvesting plants derived from grain that has not been treated with triticonazole, it has been obtained:

8040 kg. grains per hectare,

142 kg / ha of grain-supplied nitrogen,

- 13730 kg / ha of biomass dry matter (straw applicable to animals + grain).

Example 2

The procedure is as in Example 1, except that the soil is enriched with 60 kg / ha of manure nitrogen in each of the following periods: February (end of winter), April, when the cob is one centimeter long, and May in the growing stage 2 elbows.

It was observed that at flowering the biomass (dry matter) weight was 10610 kg / ha at a nitrogen content of 1.3% for plants derived from three t iconazol treated grains, as opposed to 10010 kg / ha at a nitrogen content of 1.7% for control plants derived from untreated grains.

At harvest, for plants derived from triticonazole-treated grain, the following were obtained:

8330 kg of grain per hectare,

164 kg / ha of grain nitrogen,

- 15200 kg / ha biomass dry matter (straw + grain).

When harvesting control plants derived from grain that has not been treated with triticonazole, the following shall be obtained:

- 7470 kg of grain per hectare,

148 kg / ha of grain-supplied nitrogen,

- 14120 kg / ha biomass dry matter (straw + grain).

In this way, the identified and desired effect is shown to result in improved plant growth, improved plant health and less nitrogen consumption.

Example 3

The grain of soft winter wheat is treated with triticonazole in an amount of 120 g of triticonazole per 100 kg of wheat grain.

A concentrated suspension containing 200 g / l triticonazole and 84 g / l bird-repellent is used for this treatment. This suspension is diluted with an equal volume of water and the resulting diluted mixture is applied by spraying on a grain of wheat before sowing.

It is sown in autumn (early November). The soil contains 50 kg / ha of nitrogen and its nitrogen content has not been enriched with nitrogen in the form of manure or fertilizer.

The growth conditions were non-fungal conditions and the plant growth was not affected by the fungi, while the control plants were protected with copper oxinate and subsequent antifungal treatments known not to produce the effect further observed with triticonazole.

In early June, ie. at the beginning of the ripening of the wheat (one month before harvest) the nitrogen content (in mg / plant) in the set of roots + leaves is determined. This content is 265 mg / plant for triticonazole-treated grains as opposed to 123 mg / plant for triticonazole-treated grains.

Example 4

Wheat sown in autumn (late October) is grown.

A portion of the grain used was pre-treated with triticonazole in an amount of 120 g of triticonazole per 100 kg of doe, while the other portion served as a control that was not treated with triticonazole.

A portion of the plants were treated with cycocel at 1140 g / ha under conventional conditions, i. at the growth stage, the end of the tillering - the beginning of shoot formation. The cycocel or 3C product is known as such a plant in a plant stem shortening agent, truncation is desirable to prevent deterioration due to adverse atmospheric conditions, and this product has no effect against helmintosporosis. Wheat was grown under conditions not involving fungal infestation where plant growth was not affected by fungal diseases.

At the ripening stage (late June), plant height measurements were taken.

While control plants not treated with triticonazole or cycocel measured 80 cm, plants treated with cycocel and emerged from untreated grains measured 69 cm, whereas plants treated with cycocel and emerged from grains treated with triticonazole measured 64 cm.

Thus, this test demonstrates the syriergic effect of triticonazole on later cycocel treatment as well as the stem shortening emphasized by the use of triticonazole, which makes the plant more resistant to adverse external influences.

Example 5

Growing wheat sown in Part of the grain was pre-treated with 120 g of triticonazole per 100 kg of autumn grain (late October). triticonazole in an amount while the second part of the grain serves as a control fraction of untreated triticonazole.

A portion of the plants were treated with cycocel at 1140 g / ha under conventional conditions, i. at the growth stage, the end of offshooting - the beginning of benefit creation. Cultivation was carried out under conditions not involving fungal infestation and plant growth was therefore not affected by fungal diseases.

A portion of the plants were treated with Ethephon alone at 240 g / ha in early May. Cultivation was performed under conditions not involving fungal infestation and plant growth was not affected by fungal diseases.

Part of the plants were treated in mid-April with a mixture of 375 g / ha Ethephon and 750 g / ha cycocel. Cultivation was performed under conditions not involving fungal infestation and plant growth was not affected by fungal diseases.

Towards the end of April, 20 May and 13 June were heavy rains. They were then measured and expressed as a percentage of the areas of culture in which they were lodged. The following results were obtained:

σ r>

Application Terms Area of harvested culture (%) Untreated control plants 75 Plants derived from triticonazole treated grain 50 Plants derived from grain treated with triticonazole and treated with cycocel 1 Plants derived from triticonazole-treated grain and Ethephon-treated 9 Plants derived from grain treated with triticonazole and treated with Ethephon and cycocel 0 Plants derived from untreated grains treated with Ethephon and cycocel 8 Plants derived from untreated grains treated with Ethephon alone 38 Plants derived from untreated grains treated with cycocel alone 13

This test further demonstrates the significant synergistic effect of three ticonazole on subsequent treatment with cycocel or Ethephon, as well as the truncation of plant stems highlighted by the use of triticonazole, which makes plants more resistant to adverse external influences.

Claims (15)

Method for improving the growth and / or health of plants, in particular cereals, characterized in that an effective amount of a triazole of the general formula I (I) in which: A is -CReRv- or -CRsRv-CReRs- or -CRsRv-CRsRg-CR10Ru-, X represents a halogen atom, preferably a fluorine atom, a bromine atom and a chlorine atom, or a cyano or nitro group or a (C1-C4) alkyl group or an optionally halogenated (C1-C4) alkoxy group; such as δ or zero, and if n is greater than 1, then X may be the same or different, R 1 and R 2, which are the same or different, represent a hydrogen atom or a C 1 -C 4 alkyl group which is optionally substituted, for example by one or more substituents selected from the group consisting of a halogen atom, a C 1 -C 4 alkoxy group, mono- or polyhalogenated (C 1 -C 4) alkoxy, (C 2 -C 4) alkenyl, (C 2 -C 4) alkynyl, (C 2 -C 4) mono- or polyhalogenated alkenyl, and mono- or polyhalogenated (C 2 -C 4) alkynyl group C 1 -C 4 alkoxy optionally substituted, for example with one or more substituents selected from the group consisting of halogen, C 1 -C 4 alkoxy, C 1 -C 4 alkoxy, mono or a polyhalogenated alkoxy group having 1 to 4 carbon atoms ka, (C 2 -C 4) alkenyl, (C 2 -C 4) alkynyl, (C 2 -C 4) mono or polyhalogen and (C 2 -C 4) mono- or polyhalogenated alkynyl; C 3 -C 7 cycloalkyl, C 6 -C 10 aryl, in particular phenyl, C 7 -C 11 aralkyl, especially benzyl, the various groups being optionally substituted, for example by one or more substituents selected a halogen atom, a (C 1 -C 4) alkyl group, a (C 1 -C 4) mono- or polyhalogenated alkyl group, a (C 1 -C 4) alkoxy group and a C 1 -C 4 mono- or polyhalogenated alkoxy group where R 1 and R 1 may together form a hydrocarbon chain of 2 to 5 carbon atoms and form a ring with the carbon atom to which R 1 and R ₂ are bonded, said chain optionally substituted as described above for an aryl group of 6 to 10 carbon atoms , or- R and R ₂ together may form with the carbon atom to which R and R are attached, dioxolane chain of 2 to 5 carbon atoms, wherein the chain is optionally substituted as described above for an aryl group having 6 to 10 carbon atoms . R a and R e to R n, which are the same or different, represent a hydrogen atom or a C 1 -C 4 alkyl group which is optionally substituted, for example by one or more substituents from the group consisting of halogen, C 1 -C 4 alkoxy and a mono- or polyhalogenated alkoxy group having 1 to 4 carbon atoms; C 3 -C 7 cycloalkyl, C 6 -C 10 aryl, especially phenyl, C 7 -C 11 aralkyl, especially benzyl, the various groups being optionally substituted, for example by one or more substituents selected from the group consisting of halogen, C1 -C4 alkyl, mono- or polyhalogenated C1 -C4 alkyl, C1 -C4 alkoxy and C1 -C4 mono- or polyhalogenated alkoxy, or also two groups adjacent to the A chain form together with the A atoms to which they are attached a phenyl ring fused with a cycloalkane, R 5 represents a hydrogen atom, a C 1 -C 4 alkyl group which is optionally substituted, for example by one or more substituents from the group consisting of a halogen atom, a C 1 -C 4 alkoxy group, a mono- or polyhalogenated C 1 -C 4 alkoxy group C 2 -C 4 alkenyl, C 2 -C 4 alkynyl, C 2 -C 4 mono or polyhalogen and C 2 -C 4 mono- or polyhalogenated alkynyl; C 3 -C 7 cycloalkyl, C 6 -C 10 aryl, in particular phenyl, C 7 -C 6 aralkyl. C 11, in particular benzyl, the various groups may be optionally substituted, for example with one or more substituents selected from halogen, C 1 -C 4 alkyl, mono- or polyhalogenated C 1 -C 4 alkyl, (C 1 -C 4) -alkoxy group and mono- or polyhalogenated C 1 -C 4 alkoxy group; or R is C (= O) -R _3, wherein R 1a represents a C 1 -C 4 alkyl group which is optionally substituted, for example by one or more substituents from the group consisting of a halogen atom, a C 1 -C 4 alkoxy group, a mono- or polyhalogenated C 1 -C 4 alkoxy group, an alkenyl group (C 2 -C 4), (C 2 -C 4) alkynyl, (C 2 -C 4) mono- or polyhalogenated alkenyl, and (C 2 -C 4) mono- or polyhalogenated alkynyl; C 3 -C 7 cycloalkyl, C 6 -C 10 aryl, especially phenyl, C 7 -C 11 aralkyl, especially benzyl, the various groups being optionally substituted, for example with one or more substituents of a halogen atom, a C 1 -C 4 alkyl group, a mono- or polyhalogenated C 1 -C 4 alkyl group, a C 1 -C 4 alkoxy group, and a mono- or polyhalogenated C 1 -C 4 alkoxy group; (C 2 -C 4), (C 2 -C 4) alkynyl, (C 2 -C 4) mono- or polyhalogenated alkenyl, and (C 2 -C 4) mono- or polyhalogenated alkynyl, Ria has one of the meanings of R _{with the} exception of the meaning of C (= O) -R _3, R <represents a hydrogen atom, a halogen atom, in particular a chlorine or bromine atom, an alkyl group having 1 to 4 carbon atoms which is optionally substituted, for example by one or more substituents from the group consisting of a halogen atom, an alkoxy group having 1 to 4 carbon atoms , mono- or polyhalogenated (C 1 -C 4) alkoxy, (C 2 -C 4) alkenyl, (C 2 -C 4) alkynyl, mono- or polyhalogenated (C 2 -C 4) alkenyl and mono- or polyhalogenated (C 4 -C 4) alkynyl group 2 to 4 carbon atoms; C 3 -C 7 cycloalkyl, C 6 -C 10 aryl, in particular phenyl, C 7 -C 11 aralkyl, especially benzyl, the various groups being optionally substituted, for example with one or more substituents from 3 to 7 carbon atoms; a halogen atom, a C 1 -C 4 alkyl group, a mono- or polyhalogenated C 1 -C 4 alkyl group, a C 1 -C 4 alkoxy group, and a mono- or polyhalogenated C 1 -C 4 alkoxy group such as and its salts. Method according to claim 1, characterized in that the application is carried out in the absence of fungal diseases, by which said seeds or grain or plants can be attacked, or which are expected to be attacked by seeds or grain or plants. Method according to claim 1 or 2, characterized in that it aims to increase the nitrogen content absorbed by the plants from the soil. Process according to one of Claims 1 to 3, characterized in that it aims to reduce the amount of nitrogen that must be supplied to the plants in the form of fertilizer or manure. 5. A method according to any one of claims 1 to 4, which is intended to contribute to the shortening of the stalks and to improve their resistance to abrasion, even in non-blockage. Method according to claim 5, characterized by plants derived from grains or seeds treated later with cycocel or Ethephon. by being triazole Method according to any one of claims 1 to 6, characterized in that the triazole used has the general formula in which one or more of the following conditions are met: - n is 1 or 2 and X is a halogen atom in the para-position when n is 1, and in the meta- and para-position or in the ortho- and para-position when n is 2, and / or - n is 1 and X is in para-position and / or - X represents a chlorine atom and / or R ₃ = Re = R 5 = R 10 = hydrogen and / or - R ₄ = R? = R 8 = R 11 = hydrogen or C 1 -C 4 alkyl and / or - R 1 and R 2 are selected from the group consisting of methyl, ethyl and hydrogen, and / or - R 5 represents a hydrogen atom or a C 1 -C 4 alkyl group, very preferably R 5 represents a hydrogen atom and / or - R 12 represents a hydrogen atom and / or - And is CReR? or a group -CR5RvCReR => bo / a29 - A represents a group CR ^R R, R Ri and R R; They are selected from the group consisting of methyl and ethyl, R ₃ and R and R? and R 12 is hydrogen, R ₄ is methyl, ethyl, n-propyl, i-propyl, and / or - A is -CR 6 R ₈ R ₈ R ₈ -, wherein R 1 and R ₃ are selected from the group consisting of methyl, ethyl or hydrogen, R ₃ and R 5 to R 7 and R 12 are hydrogen, R 1 is methyl, ethyl, n- propyl, i-propyl and hydrogen. Process according to one of Claims 1 to 7, characterized in that the triazole used is 2- (4-chlorobenzylidene) 5,5-dimethyl-1- (1H-1,2,4-triazole-1-). ylmethyl) -l-cyclopentanol. 9. Agrochemical composition intended for improving plant health, and / or contributing to shortening the plant stem, and / or improving the resistance of plants to lodging (even in the absence of steblolam, and / or an increase in the nitrogen content absorbed by the plants from the soil, and / or - reducing the amount of nitrogen which must be supplied to the plant in the form of fertilizer or manure, comprising an effective amount of triazole as defined in any one of claims 1 or 6 or 7 or 8. An agrochemical composition according to claim 9, characterized in that it contains 0.5 to 95% triazole. 11. Plant propagation material, characterized in that it is capable of providing plants improved health, and / or - under certain conditions with a shortened stalk, and / or with improved resistance to drowning (even in the absence of steblolam, and / or with an increased nitrogen content absorbed by the plants from the soil, and / or - requiring less nitrogen to be supplied to the plants in the form of fertilizer or manure and that it has been treated with an effective amount of triazole as defined in any one of claims 1 or 6 or 7 or 8. Plant propagation material according to claim 11, characterized in that it is in the form of grains or seeds. 13. Use of triazole. of formula (I) as defined in any one of claims 1, 7 or 8 for the manufacture of an agrochemical composition intended for use in the manufacture of a pharmaceutical composition improving plant health, and / or contributing to shortening the plant stem, and / or improving the resistance of plants to lodging (even in the absence of steblolam, and / or an increase in the nitrogen content absorbed by the plants from the soil, and / or - reducing the amount of nitrogen that must be supplied to the plant in the form of fertilizer or manure. Use of a triazole of the formula I according to claim 13, characterized in that the agrochemical composition contains 0.5 to 95% of triazole. Use of a triazole of formula I as defined in any one of claims 1, 7 or 8 for obtaining plant propagation material capable of providing plants improved health, and / or - under certain conditions with a shortened stalk, and / or with improved resistance to drowning (even in the absence of steblolam, and / or with an increased nitrogen content absorbed by the plants from the soil, and / or - requiring less nitrogen to be supplied to plants as fertilizer or manure. Use of a triazole of the formula I according to claim 15, characterized in that the plant propagation material is in the form of grains or seeds.