WO2003090536A1

WO2003090536A1 - Plant growth regulating composition for preventing preharvest sprouting

Info

Publication number: WO2003090536A1
Application number: PCT/CN2002/000282
Authority: WO
Inventors: Hong Tan; Xianguo Fan; Hubao Chen; Daxiang Li
Original assignee: Sichuan Lomon Bio Technology Co., Ltd.; Chengdu Institute Of Biology Chinese Academy Of Sciences
Priority date: 2002-04-23
Filing date: 2002-04-23
Publication date: 2003-11-06
Also published as: AU2002308945A8; AU2002308945A1

Abstract

The present invention relates to a plant growth regulating composition for preventing preharvest sprouting, comprising as active components A) a natural type abscisic acid, B) dimethipin and optional C) at least one herbicide, in addition to general inert auxiliaries.

Description

Plant growth regulating composition with preventing ear buds from germinating

Technical field

The present invention relates to a plant growth regulating composition containing natural abscisic acid with inhibiting ear germination. The international classification number belongs to A01N37 / 06.

Background technique

Natural abscisic acid, S-Abscisic aci cl (S-ABA), generic name of pesticide: S-actin. Molecular formula: C ₁₅ H _{2 (} , 0 „, chemical name: 5- (1 '-hydroxyl 2', 6 ', 6'-trimethyl-4'-oxo-2'-cyclohexene-1' -Methyl) -3-methyl- 2-cis- 4-trans-pentadienoic acid, the chemical structural formula is as follows

Chemical structure of S-ABA

In 1963, abscisic acid was added for the first time from Addicott et al. For more than three decades, scientists from various countries have conducted extensive and in-depth research on the effects of plant physiological activities. Studies have shown that ABA is a plant's "stress-resistance-inducing factor" and "balanced growth factor". Activate the plant's endogenous immune system, induce the plant to resist biotic and abiotic stresses (drought, low temperature, saline-alkali, diseases and insect pests), improve the plant's ability to resist drought, cold, disease and saline-alkali, and can be widely used in Agriculture, forestry, animal husbandry, landscaping, ecological vegetation restoration, etc.

Mature sulfur is also known as Dimethipin, for example, published in Liu Chengrong's "Taiwan Agricultural Exploration" 1998 (4) 19-20: the use of thiazine plant growth regulators; and Hu Xiaoxing, editor of "New English-Chinese Pesticides" Dictionary, 1st edition, 1999.10, Foreign Languages Press describes that thiazepine can defoliate cotton, seedlings, rubber trees, and vines, promote fruit maturity, and reduce moisture content of flax, rapeseed, rice, and sunflower seeds during harvest. .

Grain ear buds of cereal plants, such as the ear buds of hybrid rice seeds, refer to the high temperature and high humidity climate before the harvest of hybrid rice seeds, which induce grains to germinate on the ears, resulting in seed inactivation. At present, there are no effective prevention methods and control measures, which cause great losses to the seed industry every year. Grain crops are in the milky or yellow-ripe stage. S-ABA (70-200ppm) alone can be used to prevent grain ear buds of gramineous plants, such as hybrid rice ear buds and wheat ear buds, but the amount of S-ABA is too large. The cost of agricultural production is high.

In addition, it has been reported that a small amount of herbicides such as glyphosate, alachlor, butachlor, etc. have some inhibition on seed germination Role.

Summary of the Invention

The purpose of the present invention is to provide a plant growth regulating composition containing natural abscisic acid for preventing ear buds of cereal crops, which is characterized in that the composition includes A) natural abscisic acid and B) ripening sulfur.

The plant growth regulating composition of the present invention may further contain component C) at least one herbicide.

Surprisingly, the composition of S-ABA, ripening sulfur and herbicide added on the basis of the present invention has more than expected additive effect on the growth regulation of crops, mainly on the one hand, it improves each ingredient On the other hand, the application concentration of natural abscisic acid and other plant growth regulators is reduced, and the plant growth regulation combination also obtains a good level of plant growth regulation when the single compound is lower than the effective concentration. Therefore, the use of this compound can greatly reduce the amount of S-ABA, save costs, more effectively prevent the ear bud rate, and improve the yield and quality of cereal crop seeds.

The various herbicides in the present invention are known and described in, for example, the "New Handbook of Pesticides", the Pesticide Verification Institute of the Ministry of Agriculture, Agricultural Press, 1989; the "New Handbook of Pesticides" (sequel), the Ministry of Agriculture Inspection Institute, Agricultural Press, 1998; Hu Xiaoxing, editor of the New English-Chinese Pesticide Dictionary, Foreign Languages Press, 1999; Editing Manual of Foreign New Pesticide Varieties, Sha Jiajun, etc., Chemical Press, mid 1992 Mentioned examples include: acetochlor, triflufenacil, acetochlor, alachlor, gramine, fenprofen, acetochlor, acylsulfuron-methyl, salifosin, sulfachlor, Atrazine, azoxystrobin, tetrazosulfuron, BAS-662H, chlorfenuron, furazone, bensulfuron-methyl, thiachlorpine, benzobicyclon, pramifenone, cypromone, diprofen, Methocarb, acetochlor, bromobutyramide, bromophenol oxime, bromobenzonitrile, butachlor, butoxycyclone, butachlor, benzophenone, quinoxadi, dimethoxam, fluoro Ketoconazole, methamphetamine, chlorfenuron, chlorfenuron, chlorsulfuron-methyl, chlorsulfuron-methyl, chlorsulfuron-methyl, green _{Long, cinicl 0 n (- ethyl)} , cycloheptyl grass ether, ether Huang Long, clefoxydim, clethodim, clodinafop, clomazone, chloroformyl metolachlor, clopyralid, clopyrasulfuron (iethyl), oxazole Sulfamelam, cumylu, cyanazine, cybutryne, ciprofloxacin, ciprosulfuron, thiamethoxone, cyflumetazone, 2, 4-drop, 2 4-drop butyric acid, 2, 4-drop propionate, beet Ann, oatmeal, dicamba, grass herb, azasulfazone, acetochlor, yew, fenflubenzuron, diflupyron, oxazolone, piperacetam, alachlor, isomata Pentamidine, fenprofen, dimexyflam, dimethoxamine, difenoxypyr, dichlorpyr, dithiopyridine, diuron, difenuron, epoproda, imazaprofen (EPTC), chlorperamide , Ethenflurane, amidsulfuron, ethoxyfurazone yellow, ethoxyferu ethoxysulfuron, acetophenone, oxoxacillin, fentrazamide, diclofenac, diclofenac -L, trichome, methylsulfuron, florasulam ^ Fluafluchlor, fluazolate f lucarbazone, flufenacet, fluoxalate, flufenoxal, flufenoxamine, fl _U mi _pr0 pyn, flufenacil, fluoxazone, fluoxazone, ethyl Carboflufenol, fluflurazole, flupropaciK flurpyrsulfuron (-methyl,-sodium), ¾f butanol, pyrimidine, chlorofluroxypyroxyacetic acid, fluroxypyr, furfurone, dalflumide, Thiamethoxam, flusulfazone, glufosinate, glyphosate, glyphosate isopropylamine salt, flunsulfonamide, flupyroxypyr, refined flupyroxypyrifen, cyclazinone, imazafen, imazamethapyr, imazamethic acid, imazapic, imazanicotinic acid, imidazoquinolinic acid, imidazolenic acid, imidazosulfuron, iodosulfuron (-methyl, sodium), iodobenzonitrile, isopronline, isoprothromon, isoxuron , Isooxadi, isoxachlortole, isooxadi, clomazone, lactofazone, ciclopidine, liguron, 2 methyl 4 chloro, 2 methyl 4 chlorobutyric acid, fenpropifen, mesotrione benzene Triazolidin, pyraclostrobin, methylphenothlon, pyramuron, bromogluturon, (ct-) methanomethyl Amine, Sulfamethoxam, Methuron, Mesotrione, Metsulfuron, Gramine, Midolon, Naphthylamine, Dipropanil, Chlorbutazone, Nicosulfuron, Fluroxypyr, Pycnuron , Asulfurin, propargyl, oxadiazine, ciprofloxacin, chlorazine, ethoxyfluorfen, paraquat, nonanoic acid, pendimethalin, pendraliru pentochlor, betaine, picolinafon, piperafos, amphetamine, flusulfuron, prometryn, chlorampuron, dichlorfon, oxalic acid, ipraprofal, fenprofen, flubensulfuron, flusulfuron, fluoxacarb Esters, pyrazolate, pyrimisulfuron, benpropidazole, pyri benzoxim, humulacetam, pyridazol, oxime, pymesulfame, dichloroquinolinic acid, chloroquinolinic acid, chlorfenac, Refined quinoxaline, quinoxamate, sulfsulfuron, acetosulfur, simazine, oxacillin, sulfone, mesotrione, mesosulfuron, glufosinate, ethiprofone, Herbachlor, Butylthiamide, Tepraloxydinu, Terbutin, Terbutin, Thiachlor, thianuamide, Thiaconitic acid, Thiadiazol, Thifensulfuron, Grasses , Secondary prosulfocarb, mesitylene Piper ketone, triallate, triasulfuron, tribenuron, triclopyr, imazapyr ring, trifluralin, trifloxysulfuron, sulfosulfuron fluoroamine and tritosulfuron. Glyphosate, alachlor, acetochlor, butachlor, and isoprochloride are preferred.

Generally speaking, the concentration of S-ABA in the composition of the present invention is 1.0-1000ppm, preferably 1.0-100ppm, most preferably 1.0-40. Oppm; the amount of ripe sulfur is: 49% aqueous suspension 001-1 · 5 liters / ha, preferably: 0.01-1.0 liters / ha, most preferably 0.1-0.5 liters / ha; herbicide usage: 10% aquatic agent 0.001 -3. 0 liters / ha, preferably from 0.01 to 1.0 liters / ha, most preferably from 0.1 to 0.5 liters / ha.

Generally, in the composition of the present invention, the ratio (weight ratio) of S-ABA: ripening sulfur is 1: 1.0000001-10, preferably 1: 0.001-1. In addition, S-ABA: ripening sulfur: herbicide The ratio (weight ratio) is 1: 0. 00001- 10: 0. 000001-1, preferably 1: 0. 0001-1: 0. 00001-0. 1. The plant growth regulating composition containing natural abscisic acid can be applied to various cereal crops, including rice, wheat, barley, oats, sorghum, millet, etc. Among them, rice, wheat, and corn are preferred. Cereal crops are milky or yellow ripe or harvested | 7-15 days foliar spray or seedlings of the whole plant.

In addition, the plant growth regulating composition of the present invention can also be applied to various pastures. Examples of which can be mentioned include fescue: fescue, ditch fescue, spike-like cold fescue, cold fescue, three-world fescue, Allah Set of Fescue; Stipa: Stipa, Stipa lanceolata, Gobi Stipa, Stipa purpura, Stipa glauca, Kunshan stipa, Tianshan stipa, Xinjiang stipa, broomgrass, short stipa, Stipa lanceolata, St. chinensis, Stipa sphaerocephala; Poa: Genus Poa, Poa Kuna, Poa Meadow, Poa Siberia, Poa finegrass, Poa Poaceae, Poa supine, S. alpine Grasses, fescue-like bluegrass, bluegrass Xinjiang; grass genus: ice grass, sand reed grass; broom grass: broom grass, broom grass, false reed broom grass, suspense broom grass Genus: Leymus spp., Leymus spp., Branchy Leymus spp., Leymus esculenta, Leymus chinensis, Leymus chinensis; Silvergrass: Silvergrass; Yarrow: Yarrow; Others such as Cryptocorda Dayton barley, bromus inermis, alpine yellowgrass, small bran grass, Alxa goose watching, feathery three Grass, orchardgrass, small deer Mao, bermudagrass and so on.

The application dose can be varied within a relatively wide range and depends on the type of application (foliar spray, application, root irrigation, seed dressing, injection, etc.), the type of cultivated plant, the growing period of the plant, climatic conditions and other factors. In general, the composition according to the invention is applied at a dosage of from 0.01 to 2.50 kg of active ingredient / ha. Generally speaking, the application dose of the plant growth regulating composition is not critical at the time of application. The key is that the abscisic acid concentration during use should be maintained at 1. 0-l OOOppmo.

When the plant growth regulating composition of the present invention is used, a conventional preparation form is used. They are processed in conventional ways, using adjuvants commonly used in formulation processing technology, for example, emulsifiable concentrates, direct sprayable or dilutable solutions, dilutable emulsions, wettable powders, soluble powders, powders, granules or microcapsules. . Appropriate to the type of composition, the application method-such as spraying, misting, dusting, moisturizing, spraying or pouring, is selected according to the intended purpose and prevailing environment.

The formulations are prepared in a known manner, for example by mixing plant growth regulators with said adjuvants, typically a homogeneous mixture of a solvent or a solid carrier and / or grinding. Surfactants can also be used in addition to prepare the formulation.

Examples of solvents and solid carriers are described in the second edition of Pesticide Dosage Processing Technology, edited by Liu Bulin (Chemical Industry Press, 1998).

Depending on the plant growth regulator to be processed, suitable surface-active compounds are nonionic, cationic, anionic and / or amphoteric surfactants and surfactant mixtures with good emulsifying, dispersing and wetting properties. Examples of suitable non-ionic, cationic, anionic and / or amphoteric surfactants are listed in the third edition of "Agrochemical Processing Technology" edited by Liu Bulin (Chemical Industry Press, 1998).

The plant growth composition usually contains 0.1% to 99.0% by weight, preferably 0.1% to 95.0% by weight of abscisic acid and ripening sulfur, and component C, 1.0 by weight 1% 至 25.0% 的 surfactant.% To 99.9% solid or liquid processing aids and 0 to 25.0% by weight, preferably from 0.1% to 25.0% by weight.

A particularly preferred formulation composition is as follows:

(% = Percent by weight)

Oil:

Active ingredient 1% to 90%, preferably 5% to 20%

Surfactant 1% to 30%, preferably 10% to 20%

Liquid carrier 5% to 94%, preferably 70% to 85%

Powder:

Active ingredient 0.1% to 10%, preferably 0.1% to 5%

Solid carrier 99.9% to 90%, preferably 99.9% to 99%

Suspension:

Active ingredient 5% to 75%, preferably 10% to 50%

94% to 24% water, preferably 88% to 30%

Surfactant to 40%, preferably 2% to 30%

Wettable powder:

0.5% to 90%, preferably 1% to 80%

Surfactant 0.5 to 20%, preferably 1 to 15%

Liquid carrier 5% to 95%, preferably 15% to 90%

Granules:

0.1% to 30%, preferably 0.1% to 15%

99.5% to 70%, preferably 97% to 85%

The invention is illustrated by the following non-limiting examples:

1. EC A) B) 0

Active ingredient 5% 10% 25%

Calcium dodecylbenzenesulfonate 6% 8% 6% 8% polyethoxylated castor oil

(36 moles E0) 4% 4% 4%

Octylphenol polyethoxy

Compound (7 moles E0) 4% 2%

Cyclohexanone 10% 20%

Aromatics G, -Cu 85% 78% 55% 15%

Any desired emulsion can be prepared by diluting the emulsifiable concentrate with water,

2. Wettable powder A) B) 0 D)

Active ingredients 5% 25% 50% 80%

Sodium lignosulfonate 4% 3%

Sodium lauryl sulfate 2% 3% 4%

Sodium diisobutylnaphthalenesulfonate 6% 5% 6%

Octylphenol polyethoxy

Compound (7-8 moles E0) 1% 2%

Highly dispersed silicic acid 1% 3% 5% 10%

Kaolin 88% 62% 35%

The active ingredients are thoroughly mixed with the adjuvant, and the resulting mixture is ground in a suitable mill to obtain a wettable powder, which can be diluted with water to obtain a suspension of any desired concentration.

1) Coated granules A) B) C) Active component 0.1% 5% 15%

Highly dispersed silicic acid 0.9% 2% 2% Inorganic carrier (Φ 0. 1-1) 99. 0% 93% 83% Such as calcium carbonate or silica

The active ingredient was dissolved in N-pyrrolidone, and the solution was sprayed onto the carrier, and the solvent was removed by vacuum drying.

4. Coated granules A) B) C) Active component 0.1% 5% 15% Polyethylene glycol (Lee 200) 1. 0% 2% 3% Highly dispersed silicic acid 0.9% 1% 2% inorganic carrier (Φ 0. 1-1) 98.0% 92% 80% such as calcium carbonate or silica

The finely-ground active ingredient was uniformly coated on a carrier wetted with polyethylene glycol in a mixer, thereby obtaining a dust-free powder.

5. Extrusion granules A) B) 0 D)

Active ingredient 1% 3% 5% 15%

Sodium lignosulfonate 1.5% 2% 3% 4%

Carboxymethyl cellulose 1.4% 2% 2% 2%

Kaolin 97.0% 93% 90% 79%

The active ingredients are mixed and ground together with the adjuvant, the mixture is wetted with water, the above mixture is extruded, and then dried under air flow.

6. Powder Α) Β) 0

Active ingredient 0.1% 1% 5% Talc or chalk 39.9% 49% 35% Kaolin 60. 0% 50% 60% Directly available powder by mixing the active ingredient with a carrier and grinding in a suitable mill obtain.

7. Suspending agent A) Β) 0 D) Active component 3% 10% 25% 50% ethylene glycol 5% 5% 5% 5% nonylphenol polyethoxy

Compound (15 mol Ε0)-1% 2%-Sodium lignosulfonate 3% 3% 4% 5% ammonium methyl cellulose 1% 1% 1% 1%

37% formaldehyde aqueous solution 0.2% 0.2% 0.2% 0.2% silicone oil emulsion 0.8% 0.8% 0.8% 0.8% water 87% 79% 62% 38% The finely ground active substance is thoroughly mixed with the adjuvant. Suspensions are obtained in this way and can be prepared by dilution with water Suspension of any desired concentration.

It is usually convenient to separately process the abscisic acid and ripening sulfur and the herbicide of component C), and before use, the user mixes them at the required mixing ratio and applies them in a "tank mixing" manner.

The components can be applied simultaneously or separately; when applied separately, the order of application usually does not affect its effect. In general, it is critical when applying that the concentration of natural abscisic acid during application should be maintained at 1. 0-1000 ppm, preferably 1. 0-100 ppm, and most preferably 1, 0-40. 0ppra.

Application Examples

Example 1: Rice bud suppression test

In the milk grain ripening stage or yellow ripening stage or 7-25 days before harvesting, the plant growth regulating composition of the present invention is used to spray the rice ear or the whole plant once to determine the rice ear bud rate. Table 1 Inhibition of different types of ear buds in rice

Note: SABA is Abscisic Acid (+), concentration unit: ppm;

The ripening sulfur is a 49% aqueous suspension, the concentration unit is liter / ha Glyphosate is a 10% solution, concentration unit: liters / ha

The results showed that after applying the plant growth regulating composition of the present invention, the ear bud rate of rice grains was significantly reduced.

Example 2: Wheat Sprout Inhibition Test

In the milk ripening stage or yellow ripening stage of wheat grains, the plant growth regulating composition of the present invention is used to perform a spray treatment on wheat ears or whole plants to determine the ear bud rate. Table 2 Inhibition of wheat ear buds

White wheat conventional wheat

Ear bud rate ear bud rate

Pharmacy formula (%) (%)

SABA + ripe sulfur + glyphosate 25. 6 7. 6

30.0 + 0.2 + 0.6

SABA + ripe sulfur + glyphosate 21. 4 8. 7

20.0 + 0.3 + 0.1

SABA + ripe sulfur + glyphosate 24. 7 10. 3

10.0 + 0.5 + 0.3

SABA + Glyphosate 28. 4 17. 2

40.0 + 0.5

SABA + ripe sulfur 37.8 19.5

30.0 + 0.3

Uniconazole 600.0 ppm 41. 7 35.6 Water control 55. 8 45.0 0 Note: SABA is Abscisic Acid (+)-Absc isic Acid, concentration unit: ppm;

The ripening sulfur is a 49% aqueous suspension, the concentration unit is liter / ha

Glyphosate is a 10¾ solution, concentration unit: liter / ha

The results showed that after applying the plant growth regulating composition of the present invention, the wheat ear bud rate was significantly reduced.

Example 3: Forage Suppression Test

During the milk ripening stage or yellow ripening stage of forage grains or 7-15 days before harvesting, the plant growth regulating composition of the present invention is used to spray the ear or the whole plant once to determine the ear bud rate. Table 3 Inhibition effect of forage spike buds

Note: SABA is Abscisic Acid (+), concentration unit: ppm;

The ripening sulfur is 49% water suspension, the concentration unit is liter / ha

Glyphosate is a 10% solution, concentration unit: liters / ha

The results showed that after applying the plant growth regulating composition of the present invention, the forage spike rate was significantly reduced.

Claims

Claim

1. A plant growth regulating composition which, in addition to a conventional inert processing aid, also contains the following combinations as active ingredients: A) natural abscisic acid and B) ripened sulfur.

2. The plant growth regulating composition according to claim 1, further comprising component C) at least one herbicide.

The plant growth regulating composition according to claim 2, wherein the herbicide is at least one of glyphosate, alachlor, acetochlor, or butachlor.

4. The plant growth regulating composition according to claim 3, wherein the herbicide is glyphosate.

The plant growth regulating composition according to claim 1, wherein the weight ratio of components A): B) is 1: 0.00001-10.

The plant growth regulating composition according to claim 5, wherein the weight ratio of components A): B) is

The plant growth regulating composition according to claim 2, wherein the weight ratio of components A): B): C) is 1: 0.00001-10: 0.000001-1.

The plant growth regulating composition according to claim 7, wherein the weight ratio of components A): B): C) is 1: 0.0001-1: 0.00001-0. Lc

9. Use of a plant growth regulating composition according to any one of claims 1 to 8 to treat plants.

10. The use according to claim 9, wherein the plants are cereal crops and pastures.

11. The use according to claim 10, wherein the cereal crops are rice, wheat and corn.

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