FR2504357A1 - NOVEL BIO-ACTIVE COATING AND FIXING COMPOSITION FOR THE PROTECTION OF PLANTS - Google Patents

Abstract

THE PRESENT INVENTION CONCERNS A BIO-ACTIVE COATING AND FIXING COMPOSITION FOR THE PROTECTION OF PLANTS, CHARACTERIZED IN THAT IT CONTAINS AT LEAST ONE PROTEIN OF NATURAL ORIGIN REVERSIBLY SOLUBLE IN WATER AND AT LEAST ONE COMPOUND SELECTED IN THE GROUP SALTS AND COMPLEXES OF ZN, MG, MN, FE, CO, CU AND MO WITH THE USUAL ADDITIVES AND POSSIBLY A PLANT PROTECTION AGENT OR A PLANT PROTECTION COMPOSITION.

Description

R 50 54357

  The present invention relates to a bioactive coating and fixing composition generally usable in agriculture Said composition contains at least one protein of natural origin reversibly soluble in water, as well as at least one non-phytotoxic salt or complex of Zn, Mg, Co, Fe, Mn, Cu, Ti and Mo, possibly conventional plant protection agents and usual auxiliary agents The composition of the invention exerts, by comparison with similar products used Up to now, a bioactive effect Its aqueous solution forms after drying a film insoluble in water which, thanks to its

  structure, accelerate and intensify seed germination

  The composition of the invention sprayed on the leaves

  strengthens the biological processes of plants and in some

  some cases prolong the effect of protective agents

  plants The binding agent of the composition of the invention provides

  nit biodegradable decomposition products safe for the environment, and therefore has a

preservation of the environment.

  The chemical protection of plants is playing at the present time.

  a decisive role in agricultural production Phytopathogenic fungi and harmful insects can destroy 30 to 50% of the potential harvest In order to minimize these losses,

chemical products.

  Plant protection can be achieved by treatment

  seeds or post-emergence spreading.

  The chemicals used for seed disinfection are generally applied to seeds by dusting or disinfection with moisture. Chemicals applied in this way do not adhere reliably and their distribution cannot be controlled; the effect is therefore uncertain Protective coatings spread on plants do not resist water, and rain therefore causes

easily said coatings.

  For the reasons given above, pro-

  tection of plants are used in very large excess in the case of the two types of disinfection of remences Besides

  cost factors, this represents a danger for the child

  environment and human beings. In order to eliminate these defects, coating varnishes for seed disinfection were used in the developed industrial countries in the 1960s.

  (see for example the American patent N O 3 113 33 q).

  The cited patent describes varnishes and dispersions based on synthetic resins, among which varnishes containing a synthetic resin and an appropriate solvent are non-phytotoxic only on a limited territory and between limited parameters From time to time, they are reveal flammable and can explode, and their solvents are more or less toxic The coating varnishes according to said patent are not biodegradable and their compatibility with the active ingredient of the plant protection agent

is limited.

  The shelf life of products according to the

  patent cited is very limited, and when cooled in-

  below the freezing point and / or, possibly, through the effect of a plant protection agent, they coagulate irreversibly and thus become unfit for use Binding agents for synthetic dispersions

  are also not biodegradable.

  The general disadvantage of disinfecting seeds with a synthetic film is that the synthetic resin film, generally known to be waterproof, hinders and delays the absorption of water and thus the germination of seeds, especially in dry soil, and also results in significant plant losses

  if a cold period occurs during emergence.

  In the course of the present research, it has been successful in developing coating systems forming a film which are free from the drawbacks of known solutions.

  above and which mg-me have completely new effects

  calves by comparison with known solutions.

  The invention is based on the discovery that animal and vegetable proteins reversibly soluble in water of natural origin, such as casein, albumin, collagen, hydrolyzed keratin, soy protein, wheat gluten , provide in combination with suitable metallic compounds such mixtures from the solution of which a coating is formed by drying

  bioactive insoluble in water, but sufficiently hydrophilic.

  Surprisingly, such coatings also exert

  an effect of promoting germination and increasing

  growth, in addition to the effect of the plant protection agents embedded in it,

no restrictions.

  The invention relates to a bioactive coating and fixing composition for protecting plants, characterized in that it contains at least one protein reversibly soluble in water of natural origin and at least one compound chosen from the group of salts and complexes of Zn, Mg, Mn, Fe, Co, Cu and Mo with the usual additives and possibly a protective agent for

  plants or a plant protection composition.

  The most important raw materials in the

  sition according to the invention are easily accessible and of agricultural origin Neither the raw materials nor the final products are toxic during production and use, and they biologically break down rapidly in nutrients which can be used

by the plant.

  The composition of the invention is not sensitive to freezing; in a closed container, you can keep it for years,

  and can be diluted without restriction with water.

  It moistens the seed surface quickly and completes

  and forms on this surface a coating of good

  adhesion, regular, hard, flexible and insoluble in water.

  When used as an additive to sprayed liquids, it provides optimal distribution and rain-resistant adhesion of the protective agent to the surface of the spray.

the plant.

  The composition of the invention has a bioactive effect because the present research conducted for several

  years have proven that in addition to the grip and protective effect

  tion, it promotes the germination and growth of seeds When added to any type of sprayed liquid it significantly improves the resistance of coatings to rain and, moreover, it promotes plant growth and increases their resistance to diseases

caused by fungi.

  Suitably, the composition of the invention con-

  holds a protein in an amount of 10 to 99% by weight, while the metal compound is in an amount of

0.05 to 5% by weight.

  During the selection of the metal salts and the metal complexes, respectively, which are used for the production of the complexes of the invention, it is possible to have recourse to different metal compounds, for example inorganic and organic salts, or alternatively to complexes prepared with usual chelating agents, eg acid

  ethylenediamine-tetraacetic, and mixtures thereof, respec-

  The solubility in water of the compounds used is not of decisive importance, for example one can use a zinc phosphate insoluble in water or another inorganic metal salt insoluble in water if

  it is ground to a sufficiently fine size, conveniently

  up to a particle size of less than 20 microns.

  The compounds of Zn, Mg and Mn gave partial results.

  particularly good for application to seed disinfection, and in the case of a composition applied to the leaves of plants in the growing season,

  in addition to Zn, Ti and the usual trace elements of disinfectants

  sprays, eg Fe, Cu, Co and Mo are additives with a favorable effect. The composition of the invention can be prepared, for example.

  in the form of a solution or a suspension, respectively

  In fact, and in practice, these are the most suitable formulations. As with the powder colors based on dry casein, the composition of the invention can also be prepared in pulverulent form, and from this form one can prepare the desired solution or suspension, respectively, at the place of use,

eg in the fields.

  If one has to prepare from the compositions of

  the invention a pesticide, eg a fungicide, an insecticide

  cide, an acaricide and / or a nematocide, it is necessary to add the active ingredients ensuring the desired protective effect in an effective amount The corresponding active agents can be added in a sufficiently finely ground form However, one can also proceed so as to add to the composition of the invention a composition of

  plant protection ready to use.

  As fungicides, for example,

  dithiocarbamates or thiuram derivatives, e.g. zinc-

  ethylene-bis-dithiocarbamate, manganese-ethylene-bis-

  dithiocarbamate, tetramethyl-thiuram disulfide; the

  phthalimide derivatives, e.g. N-trichloro-methyl-mercapto-

  4-cyclohexene-1,2-dicarboximide (captan), N-trichloro-

  methyl-mercapto-phthalimide; nitrobenzene derivatives, eg tetrachlorodinitrobenzene, pentachloronitrobenzene;

  systemic fungicides, e.g. the 8-oxyquinole complex-

  ine-copper (II) (copper oxyquinoleate), 1-l (butylamino) -

  carbonyll-1 H-benzimidazol-2-yl-carbamate (Benomyl), le, 6-dihydro-2methyl-N-phenyl-1,4-oxathiin-3-carboxamide (Carboxin), etc. As insecticides can be used for example chlorinated hydrocarbons, eg Methoxychlor, DDT, etc; other esters of organic phosphoric acids, eg DDVP, malathion, parathion, Miazinone; and carbamate derivatives, e.g.

carbaryl or carbofuran.

  In order to modulate the film forming properties

  cule of the composition of the invention, different auxiliary agents can be used. The flexibility of the film layer is modulated by auxiliary agents having a softening effect, eg by oils of mineral or vegetable origin; di and polyhydroxy-aleools, eg glycol, polyglycol or glycerin; optionally partial polyol esters, for example the ester of trimethylolpropane-caprolque acid, the monoglyceride of dodecylcarboxylic acid, etc .; or the partial esters of di and polycarboxylic acids, for example monooctyl phthalate, monobutyl phthalate or their salts, for example.

  their ammonium salts which play a role of surfactants

  active in addition to their softening effect.

  In order to modulate the distribution, the adhesion and the permeability of the films formed by the compositions of

  the invention, surfactants can also be used

  active agents As surface-active agents, anionic and non-ionic agents can be used according to the desired properties of the film. Surface-active agents of these types are described for example on pages 199-285 of the book "Chemical Technology" by Winacker-K Uhler (published by

  Technical Editions, Budapest, 1963).

  As preservatives for the compositions of the invention

  tion, mold inhibiting agents can be used, e.g. sodium pentachlorophenolate, sodium benzoate

sodium or sodium salicylate.

  When the composition of the invention is used in the disinfection of seeds, basic water-soluble dyes can be used to distinguish the disinfected seeds. Thus, for example, dyes with rhodamine, nigrosine base, water-soluble indulins, etc. The invention is clarified using the following examples,

non-limiting -

Example 1

  In a mixing reactor, made of stainless steel

  ble, 80 g of deionized water are introduced and weighed, while heating with steam at 60 ° C. While stirring, 10 kg of pulverized acid casein are added. In 4 liters of a 25% aqueous ammonia solution, dissolve 65 g of zinc phosphate The solution is added to the casein suspension in a thin stream After the addition is stirred

  mixing for 1 hour A light solution is obtained

  opalescent Add 600 g of a nonionic emulsifier (Emulsogen 10 from Hoechst) and 500 g of polyglycol (Lanogen 1500 from Hoechst) to the solution, and add 35 g of sodium pentachlorophenolate to the solution. solution 12 g of rhodamine B tincture and the mixture is stirred until it goes completely into solution.

Example 2

  The procedure is as in Example 1, but instead of casein, a soy protein is used and 0.1 part by weight of aqueous ammonia solution is added.

  260 B based on part by weight of soy protein.

Example 3

  90 kg of deionized water are introduced into a heated reactor fitted with a mixer and, while stirring regularly, 15 kg of bone glue are added. The reaction mixture begins to heat and, when 80 ° C. is reached, add 1 kg of ethylenediamine-tetraacetic acid-titanium complex

  and 4 kg of ethylenediamine-tetraacetic acid complex

  magnesium At the end of h, 0.8 kg of nonyl- is added to the mixture

  ethoxylated phenol (containing 10 moles of ethylene oxide), 1 kg of propylene glycol, 0.2 kg of benzenesulfochloroamide sodium and 0.005 kg of bright red dye with Ostazine H 3 B.

  After cooling, 20 kg of 1-l (butyl-

  amino) -carbonyll-1 H-benzimidazol-2-yl-carbamate as fungus-

  cide and the mixture is reduced to a medium particle size

  2nm ne in a Leproduit ball mill of the example

  can be used for plant disinfection.

Example 4

  In an autoclave equipped with a mixer, 80 kg of water are introduced and weighed and, while continuously stirring,

  20 kg of blood albumin is dispersed there At the am-

  biante (20-25 C) the mixture is stirred until dissolved.

  0.8 kg of magnesium phosphate is then added to the mixture.

  ammonium and 0.1 kg of ethylene-diaminetetra- acid complex

  acetic-molybdenum After stirring for h, a further 1 kg of sodium lauryl sulfate, 0.2 kg of toluene-sulfonamide-chlorosodium, 5 kg of urea and 0.008 kg of rhodamine tincture G are added.

  with 15 kg of captan (N-trichloro-methyl-mercapto-4-

  cyclohexene-1,2-dicarboximide) The product of the example can

  be used for seed disinfection.

Example 5

  In 8 parts by weight of the solution of Example 1, 2 parts by weight of Orthocid 50 WP are mixed. Without any dilution, the suspension obtained can be used for seed disinfection. If the suspension is diluted to the hundredth with l water can be used as

fungicide for spreading.

  The Orthicid 50 WP suspension, diluted according to the example, is spread on glass plates and dried, then 10 mm of artificial rain is dropped there. After the rain 87% of the spread coating remains unchanged on the glass plates. The parallel coating but devoid of the composition of the invention is practically completely washed out from the

surface by 10 mm of rain.

  With the Orthocid suspension diluted according to the example, a spraying is carried out every two weeks in a peach culture of the Elberta type. As a control, a parallel aqueous suspension of Orthocid is sprayed on the trees without the composition of the invention. to a meme

0.1% concentration.

  The product in the example provides complete protection against the witch's broom (Taphrina) and by the effect of

  the composition of the invention the harvest is significant-

  more colorful than the control In the control plot the infection develops gradually and at the end of the

  growing season it reaches 35-38%.

Example 6

  9 parts by weight of the product of example 2 based on soy protein are mixed with 1 part by weight of TMTD (tetramethylthiuram disulfide) with an average particle size of 100 nm in a homogenizer until the mixture becomes homogeneous The mixture obtained is pre-grinded

  in a corundum disc mill up to a size

  20 nm ticular, then it is ground to an average particle size of 2 nm in a ball mill of the Netsch system The product of the example can be used

  for the disinfection of seed seeds.

  Sick seed is disinfected with the product of

  Example l 200 g of active agent TMTD / quintal of seedsl.

  As a witness, we powder the seeds

at the same dose.

  The disease disinfected by the product according to the invention

  remains free of infection with nigrospore and fusarium.

  From 100 seeds sown, 98 emerge Seedling plants that emerge are a bright green color and, compared to the controls, they have a height difference of 26-29% The percentage of emergence of the controls is

  of 76 due to fungal infection.

Example 7

  15 kg of finely ground casein powder, 1000 g of dodecylbenzenesulfonate, 200 g of Zn 3 (PO 4) 2 g of Chloramine T and 5 g of Rhodamine G dye are poured into a ball mill and homogenized The powder is thus transported obtained at its place of use On site, 1 of water at a temperature of 50-600 ° C. is mixed with 6 kg of a 25% aqueous ammonia solution and, while stirring continuously, the powder is poured into it After dissolution, 18 kg of Quinolate V 4 X are mixed therein so that the powder is completely free of lumps.

  product for seed disinfection.

Example 8

  To 90 parts by weight of softened water, 4 parts by weight of the binding agent according to Example 1 are added, then, while stirring continuously, 3 parts by weight of colloidal sulfur composition are added to 880 g of sulfur. litrel and 2 parts by weight of ammonium salt

  dinitro-o-cresol (containing 25% of active ingredient), prior-

  diluted with the same amount of water at a temperature of 800 C, and finally 0.01 part by weight is added to the mixture

  wetting agent with NONIT (sodium dioctylsulfosuccinate).

  With the spray liquid obtained, we spread

  winter age using 10 1 of spray liquid

  per carrier unit After drying, the coating thus obtained

  nu is rainproof and protects trees from fungal infection in the spring growing season.

Example 9

  1.2 kg of the composition are carefully mixed

  of example 1 with 100 g of Orthocid 50 WP and 100 g of which

  nolate V 4 X 100 g of water are added and the mixture is carefully homogenized The disinfectant material thus prepared is added to 100 kg of beet seeds and it is applied in a rotary mixer to the surface of the seeds in a uniform layer 3 kg of bentonite are then added and, while stirring and still turning, it is made to adhere to the surface of the disinfected seeds. The seeds become round and larger, and can thus be sown one by one.

Example 10

  4 l of the fertilizer product for Wuxal R leaves are dissolved in 80 l of water, then 2.5 kg of the composition of Example 1 is added so that it is gradually diluted beforehand with 1 l of whole water stirring continuously The spray liquid thus prepared is spread over 1 hectare of an apple orchard

  in the form of fertilizer for leaves, by means of an airplane.

Example 11

  5 kg of the Peretrix H fertilizer for leaves are dissolved in 400 l of water, 1? kg of the composition of Example 2 diluted with 3 1 of water and,

  after mixing carefully, spread on 1 hectare of p, -

  expensive with a sprayer.

  In order to demonstrate the effect of the compositions according to the

  vention, in vitro and in vivo examinations are carried out.

  In in vitro tests, ger-

corn as a snuit.

  MV-25 hydride corn seeds are germinated in a petri dish. In the tests, non-disinfected seeds are used, the bioactive product according to example 1 of the invention and seeds disinfected with the film-forming product (devoid of active ingredient) of American patent NO 3 113 339 Germination is carried out at a temperature of 200 ° C. for 8 days in identical soil under identical conditions. After 8 days the length of the root and of the stem are measured.

of my germinated Is.

  The average length of the root of the root disinfected by said film-forming product is 1 mm, the average length of the radicle of seeds not disinfected is 6 mm, while the radicles of seeds disinfected with the composition of the invention are generally 9 mm long; the composition of the invention therefore increases the power

  50% germinative, compared to untreated seeds.

  In field experiments, peas, beans and corn are disinfected with the composition of Example 6 using 8 liters of product per 100 kg of seeds. As a control, non-disinfected seeds and disinfected seeds are used. with the binding agent

U.S. Patent No. 3,113,339.

  The height of the seedlings is measured after 3 weeks 20 to 30% of the non-disinfected seeds are destroyed, while the plants which emerge from the seeds disinfected with said binding agent are generally 30% smaller than those which from treated seeds

  with the compositions according to the invention.

1 4

Claims (1)

CLAIMS 1 Bioactive coating and fixing composition for plant protection, characterized in that it contains at least one protein of natural origin reversibly soluble in water and at least one compound chosen from the group of salts and complexes of Zn, Mg, Mn, Fe, Co, Cu and Mo with the usual additives and optionally a plant protection agent or a plant protection composition. 2 Composition according to claim 1, characterized in that it contains a protein in an amount of 10 to 99% by weight and a metal compound in an amount of 0.05 to% by weight. 3 Composition as claimed in claim 1 or claim 2, characterized in that it contains as reversible soluble protein casein, albumin, collagen, hydrolyzed keratin, so Ja proteins or wheat gluten. 4 Composition according to claim 1, characterized in that it contains as a softener a polyol or a partial ester of a polyol and / or a partial ester of a di- or polycarboxylic acid in an amount of 0.1 to 10% . Composition according to Claim 1, characterized in that it contains an anionic and / or nonionic surfactant in an amount of 0.1 to 5%, as a preservative at least one material with fungicidal effect in an amount of 0 , 01 to 1% and optionally as dye at least one basic water-soluble dye in an amount from 0.001 to 5%.   1 5 6 Composition as claimed in any one   of claims 1 to 4, characterized in that it   contains an insecticide or fungicide substance in one   quantity of not more than 30% as an additive.