阅读说明：本技术 含吡氟酰草胺、噁草酮与二甲戊灵的三元蒜田专用除草剂 (Ternary herbicide containing diflufenican, oxadiazon and pendimethalin special for garlic field ) 是由 马明科 刘志军 郭树鹏 宫贞启 陈福良 郝新峰 刘强 于 2021-01-05 设计创作，主要内容包括：本发明公开了一种含吡氟酰草胺、噁草酮与二甲戊灵的三元蒜田专用除草剂,吡氟酰草胺、噁草酮与二甲戊灵质量比为4:5:10；本发明还提供一种含有上述除草组合物的制剂,所述除草组合物占制剂总质量的19％～76％；含吡氟酰草胺、噁草酮与二甲戊灵的三元蒜田专用除草剂,其特征在于为可湿性粉剂、水分散粒剂、悬浮剂、可分散油悬浮剂等适合农业使用的各种剂型；本发明采用了三元蒜田除草剂,具有除草面广、除草效果彻底和安全,不影响蒜苗生长。(The invention discloses a ternary allium sativum field special herbicide containing diflufenican, oxadiazon and pendimethalin, wherein the mass ratio of diflufenican, oxadiazon and pendimethalin is 4:5: 10; the invention also provides a preparation containing the weeding composition, wherein the weeding composition accounts for 19-76% of the total mass of the preparation; the ternary herbicide special for garlic field containing diflufenican, oxadiazon and pendimethalin is characterized by being various formulations suitable for agriculture, such as wettable powder, water dispersible granules, suspending agent, dispersible oil suspending agent and the like; the invention adopts the ternary garlic field herbicide, has wide weeding range, complete and safe weeding effect and does not influence the growth of garlic sprouts.)

1. The ternary allium sativum field special herbicide contains diflufenican, oxadiazon and pendimethalin, and the mass ratio of the diflufenican, the oxadiazon and the pendimethalin is 4:5: 10. The invention also provides a preparation containing the weeding composition, and the weeding composition accounts for 19-76% of the total mass of the preparation.

2. The ternary allium sativum field herbicide containing diflufenican, oxadiazon and pendimethalin as claimed in claim 1, wherein the preparation can be any agriculturally acceptable dosage form, and is preferably various agriculturally acceptable dosage forms such as wettable powder, water dispersible granules, suspending agent, dispersible oil suspending agent and the like.

3. The ternary allium sativum herbicide containing diflufenican, oxadiazon and pendimethalin in various dosage forms according to claim 2, wherein the dispersing agent is one or more selected from lignosulfonate, polycarboxylate, alkylnaphthalenesulfonate, sodium dodecylbenzenesulfonate, alkyl polyoxyethylene ether sulfonate or alkylphenol polyoxyethylene ether formaldehyde condensate;

the wetting agent is selected from one or more of sodium dodecyl sulfate, secondary alkyl sodium sulfate, fatty alcohol polyoxyethylene ether, nonylphenol polyoxyethylene ether or sorbitan fatty acid ester polyoxyethylene ether;

the carrier is one or more selected from kaolin, diatomite, attapulgite, bentonite or white carbon black.

When the water dispersible granule is prepared, the used auxiliary agents comprise:

the dispersant is selected from one or more of polycarboxylate, lignosulfonate, alkyl naphthalene sulfonate, alkylphenol polyoxyethylene ether or alkylphenol polyoxyethylene ether sulfonate;

the wetting agent is selected from one or more of naphthalene sulfonate, fatty alcohol sulfate, dodecyl benzene sulfonate, lauryl sodium sulfate, fatty alcohol polyoxyethylene ether or alkyl sulfonate;

the disintegrating agent is selected from one or more of ammonium sulfate, urea, corn starch and its derivatives, low-substituted hydroxypropyl cellulose, polyvinylpyrrolidone or sodium alginate, etc.;

the adhesive is selected from one or more of hydroxyethyl cellulose, soluble starch, polyethylene glycol, methyl cellulose, dextrin, fructose or polyvinyl alcohol;

the carrier is selected from one or more of white carbon black, kaolin, bentonite, diatomite, light calcium carbonate, gypsum, attapulgite, urea or sucrose.

When formulated as a suspension concentrate, the adjuvants used include:

the dispersant is selected from one or more of polycarboxylate, lignosulfonate, alkyl naphthalene sulfonate, Tersperse 2425, alkylphenol polyoxyethylene ether and the like;

the wetting agent is selected from one or more of alkyl sulfonate, Tersperse 2500, alkylphenol polyoxyethylene ether phosphate, phenethylphenol polyoxyethylene ether phosphate, alkyl sulfate, naphthalene sulfonate and the like;

the thickener is one or more selected from xanthan gum, polyvinyl alcohol, carboxymethyl cellulose, sodium polyacrylate, bentonite, magnesium aluminum silicate, etc.;

the antifreezing agent is one or more selected from ethylene glycol, propylene glycol, glycerol, urea, etc.;

the preservative is selected from one or more of sorbic acid, sodium benzoate, benzaldehyde, p-hydroxybenzaldehyde, sodium salicylate, 2-hydroxybiphenyl and the like;

the defoaming agent is selected from organosilicon defoaming agents.

The salts in the above adjuvant, such as polycarboxylate, lignosulfonate, etc., are sodium salt or calcium salt. And DS 10287 (Hensmei Corp.).

4. Use of the product herbicide as claimed in claim 3 for the control of resistant weeds in crops of useful plants.

5. Use according to claim 4, wherein the crop is a garlic field.

6. Use according to claim 5, characterized in that the resistant weeds are cleavers, Convolvulus arvensis etc. and increase the duration.

Technical Field

The invention relates to a ternary herbicide containing diflufenican, oxadiazon and pendimethalin for garlic fields, which can be used for preventing and removing weeds in the garlic fields and belongs to the technical field of pesticides.

Background

Diflufenican belongs to substituted pyridylanilide herbicides which are applied for patent by Bayer company in 1982 and are used for preventing and killing various annual gramineous weeds and certain broad-leaved weeds in corn, soybean and wheat fields. The variety is a selective contact and long-acting herbicide, and has the action mode that phytoene dehydrogenase is inhibited, so that carotenoid biosynthesis is inhibited, chlorophyll damage and cell rupture are caused, and plants die. The soil has long residual period, and is suitable for preventing and killing various broadleaf weeds such as flabellum flaccidum, polygonum cuspidatum, polygonum salmon, amaranth retroflexum, dayflower, elsholtzia, Thalathus sinensis, vetch, descurainia sophia and Convolvulus floridus in barley and wheat fields.

Oxadiazon is a product of the company ronalprenk, france, as a contact-killing pre-and post-emergent herbicide. When used for soil treatment, the herbicide mainly acts through the absorption of the young buds and the stems and leaves of weeds and can play a good role in weed control under the condition of light. The weed is particularly sensitive to weeds in the sprouting period, when the weeds sprout, the growth of coleoptiles is inhibited, tissues of the weeds are rapidly rotted, and the weeds die; the herbicide effect is reduced along with the growth of the weeds, and the herbicide is basically ineffective to the grown weeds. The oxadiazon has a wide weed control spectrum, can prevent and remove common barnyard grass, broad-leaved weeds and nutgrass flatsedge, has special effect on shepherd's purse and Convolvulus arvensis, and is poorer in chickweed. The amount of oxadiazon depends on the soil type, soil moisture and weed type.

Pendimethalin belongs to aniline herbicides and can be widely applied to weeding in fields of various crops such as corn, soybean, peanut, cotton, direct seeding dry rice, potato, tobacco, vegetables and the like. The herbicide has wide applicability, does not need soil mixing after spraying, can prevent the growth of weed seedlings, and can effectively prevent and kill annual gramineous weeds, partial broadleaf weeds and nutgrass flatsedge, such as: cockspur grass, crab grass, green bristlegrass, moleplant seed, eleusine indica, purslane, amaranth, chenopodium album, abutilon, black nightshade, cyperus rotundus, cyperus heterophyllus and the like.

At present, relevant researches on weed control in garlic fields are not available for the mixed use of diflufenican, oxadiazon and pendimethalin, the invention aims to combine the advantages of three herbicides, not only remove the gramineae and broadleaf weed, but also enhance the control effect on malignant weeds, increase the effective period, achieve the effect of one-time application and two-season careless, and contribute to the increase of yield and income of garlic farmers due to scientific application of medicines.

Disclosure of Invention

The invention aims to provide a ternary herbicide containing diflufenican, oxadiazon and pendimethalin for garlic fields.

The invention adopts the following technical scheme: the ternary allium sativum field special herbicide contains diflufenican, oxadiazon and pendimethalin, and the mass ratio of the diflufenican, the oxadiazon and the pendimethalin is 4:5: 10.

The invention also provides a preparation containing the weeding composition, and the weeding composition accounts for 19-76% of the total mass of the preparation, such as various formulations suitable for agriculture, as suspending agents, dispersible oil suspending agents and the like.

The preparation can also contain an auxiliary agent, and specifically can be one or more of a dispersing agent, a wetting agent, a disintegrating agent, an adhesive, a thickening agent, an emulsifying agent or a carrier. When formulated as wettable powders, the adjuvants used include:

the dispersant is one or more selected from lignosulfonate, polycarboxylate, alkyl naphthalene sulfonate, sodium dodecyl benzene sulfonate, alkyl polyoxyethylene ether sulfonate or alkylphenol polyoxyethylene ether formaldehyde condensate;

the wetting agent is selected from one or more of sodium dodecyl sulfate, secondary alkyl sodium sulfate, fatty alcohol polyoxyethylene ether, nonylphenol polyoxyethylene ether or sorbitan fatty acid ester polyoxyethylene ether;

the carrier is one or more selected from kaolin, diatomite, attapulgite, bentonite or white carbon black.

When the water dispersible granule is prepared, the used auxiliary agents comprise:

the dispersant is selected from one or more of polycarboxylate, lignosulfonate, alkyl naphthalene sulfonate, alkylphenol polyoxyethylene ether or alkylphenol polyoxyethylene ether sulfonate;

the wetting agent is selected from one or more of naphthalene sulfonate, fatty alcohol sulfate, dodecyl benzene sulfonate, lauryl sodium sulfate, fatty alcohol polyoxyethylene ether or alkyl sulfonate;

the disintegrating agent is selected from one or more of ammonium sulfate, urea, corn starch and its derivatives, low-substituted hydroxypropyl cellulose, polyvinylpyrrolidone or sodium alginate, etc.;

the adhesive is selected from one or more of hydroxyethyl cellulose, soluble starch, polyethylene glycol, methyl cellulose, dextrin, fructose or polyvinyl alcohol;

the carrier is selected from one or more of white carbon black, kaolin, bentonite, diatomite, light calcium carbonate, gypsum, attapulgite, urea or sucrose.

When formulated as a suspension concentrate, the adjuvants used include:

the dispersant is selected from one or more of polycarboxylate, lignosulfonate, alkyl naphthalene sulfonate, Tersperse 2425, alkylphenol polyoxyethylene ether and the like;

the wetting agent is selected from one or more of alkyl sulfonate, Tersperse 2500, alkylphenol polyoxyethylene ether phosphate, phenethylphenol polyoxyethylene ether phosphate, alkyl sulfate, naphthalene sulfonate and the like;

the thickener is one or more selected from xanthan gum, polyvinyl alcohol, carboxymethyl cellulose, sodium polyacrylate, bentonite, magnesium aluminum silicate, etc.;

the antifreezing agent is one or more selected from ethylene glycol, propylene glycol, glycerol, urea, etc.;

the preservative is selected from one or more of sorbic acid, sodium benzoate, benzaldehyde, p-hydroxybenzaldehyde, sodium salicylate, 2-hydroxybiphenyl and the like;

the defoaming agent is selected from organosilicon defoaming agents.

The salts in the above adjuvant, such as polycarboxylate, lignosulfonate, etc., are sodium salt or calcium salt.

When formulated as a dispersible oil suspension, the adjuvants used include:

the emulsifier is one or more selected from fatty alcohol sulfate, alkyl aryl sulfonate, alkylphenol polyoxyethylene ether and fatty alcohol polyoxyethylene ether.

The dispersant is selected from one or more OF Atlox 4912 (Dada), AO20 methyl oleate special dispersant (Rodiya), SP-OF3498D (Jiangsu Optimus chemical science and technology Co., Ltd.), DS 10287 (Hensman Co., Ltd.), etc.

The structure regulator is selected from one of oil-based bentonite, white carbon black and the like.

The carrier is selected from soybean oil, corn oil, rapeseed oil, cottonseed oil, castor oil, turpentine, palm oil, coconut oil, sunflower oil, etc.; the vegetable oil esterified substance comprises one or more of rapeseed oil methyl ester, soybean oil methyl ester, palm oil methyl ester, etc. Furthermore, the ternary garlic field containing diflufenican, oxadiazon and pendimethalin is specially used for controlling resistant weeds of crops.

Further, the crop is a garlic field.

Furthermore, the weeds in the garlic field are alopecurus, chickweed, shepherd's purse, cleavers and bindweed.

Compared with the prior art, the invention has the beneficial effects that: the invention takes the ternary of diflufenican, oxadiazon and pendimethalin as the effective components, and is matched with the combination of specific auxiliary materials, and compared with the prior suspending agent, the preparation has the advantages of synergy, stability, capability of exerting the drug effect at low temperature, easiness in packaging, storage and transportation and the like. Compared with the existing unitary and binary garlic field herbicides, the ternary garlic field herbicide has the advantages of wide weeding range, thorough and safe weeding effect, no influence on the growth of garlic sprouts, safety and long acting, no harm to the garlic sprouts during the early stage of garlic emergence, long lasting period of difluoride, long weed sealing time and no weed in the field in the next spring

The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

Example 1

19% difluorine, oxadiazon and pendimethalin wettable powder

Diluting clethodim crude oil with dimethyl sulfoxide, adding white carbon black for adsorption, and then carrying out airflow crushing and mixing on the clethodim crude oil and other components to prepare wettable powder.

Example 2

76% of difluoride, oxadiazon, pendimethalin water dispersible granules:

the active ingredients, the auxiliary agent and the filler are crushed by a jet mill, fully mixed in a mixing kettle, kneaded by adding water, extruded, granulated, dried and sieved to prepare the water dispersible granule.

Example 3

19% of difluorine oxadiazon pendimethalin dispersible oil suspension:

example 4

19% of difluorine oxadiazon pendimethalin suspension:

bioassay examples

Firstly, preparing liquid medicine and applying medicine

According to the test requirements, a certain amount of diflufenican, oxadiazon and pendimethalin preparation is accurately weighed and mixed into various concentrations required by the test, and 0.1% tween-80 aqueous solution without the preparation is used as a blank control. Air-dried and sieved surface soil without herbicide is filled into a flowerpot (18 multiplied by 18cm), and 24 test weed seeds with accelerating germination and exposing white are put into the flowerpotEvenly placing the mixture in a flowerpot, covering soil and lightly pressing. The thickness of the covering soil is suitable for covering the weed seeds and not exposing the seeds after light pressing. 7d after sowing, spraying by using a raw measuring spraying tower, wherein the liquid spraying amount is 600L/hm²Repeat for 4 replicates per treatment. After the spraying treatment, the soil is placed in a greenhouse again, natural illumination is carried out, and the soil humidity is maintained by a bottom infiltrating irrigation method.

Second, combined action evaluation method for herbicide mixed application

The theoretical prevention effect of the diflufenican, oxadiazon and pendimethalin after being mixed is calculated by adopting a Colby method, the combined action type of the medicament is determined, and the calculation formula is as follows:

E₀＝100-X×Y×Z/100²

in the formula: x is the ratio of the fresh weight of the weeds to the fresh weight of the control weeds when diflufenican is used alone; y is the ratio of the fresh weight of the oxadiazon when used alone to the fresh weight of the control weeds; the ratio of the fresh weight of the weeds to the fresh weight of the control weeds when the Z-pendimethalin is used alone; e₀And the theoretical fresh weight inhibition rate of the three components on the tested weeds after being mixed.

E is the measured value of the inhibition rate of the fresh weight of the tested weed after the three are used together. When E-E₀The synergistic effect is achieved when the content is more than 10 percent; E-E is more than or equal to minus 10 percent₀Adding when the content is less than or equal to 10 percent; E-E₀When the content is less than-10%, the antagonism is obtained.

TABLE 1 evaluation of the combined effects of diflufenican, oxadiazon and pendimethalin

The results of the combined action assay of diflufenican, oxadiazon and pendimethalin in combination are shown in table 1. After diflufenican, oxadiazon and pendimethalin are mixed, the difference value between the actual fresh weight control value and the theoretical fresh weight control effect of the alopecurus, the difference value between the current weight control value and the theoretical fresh weight control value of the alopecurus, the difference value between the current weight control value and the current weight control value of the alopecurus, the difference value between the. According to the comprehensive combined action determination result, the optimal mixture ratio of diflufenican, oxadiazon and pendimethalin is 4:5:10 when the diflufenican, the oxadiazon and the pendimethalin are mixed.

Examples of the effects of the field

The main weeds in the test field are barnyard grass, green bristlegrass herb, chenopodium album, amaranthus retroflexus and the like. The spraying device is a knapsack sprayer and a fan-shaped spray nozzle, the pressure is 0.15MPa, and the water consumption is 450L/hm²。

First, experimental design

The experiment was set to 7 treatments: the treatment dosages of the 19% diflufenican-oxadiargyl (4+5+10) dispersible oil suspending agent are 950, 1425 and 1900g a.i./hm respectively²(ii) a 300g a.i./hm of 30% diflufenican suspension²(ii) a 375g a.i./hm oxadiazon emulsifiable concentrate 250g/L²(ii) a 990g a.i./hm of 33 percent pendimethalin missible oil²And clear water control, wherein the treatment is repeated for 4 times, the total number of the treatments is 28 cells, and the cell area is 20m²Random block permutation.

Second, test method

The pesticide is applied after garlic is sowed and before garlic is sowed. The application method is carried out in clear weather at 23 deg.C and breeze. The application method is manual spraying, and the liquid spraying amount is 0.9L. Investigating and collecting data according to pesticide field efficacy test criteria, investigating the injury condition of the pesticide to weeds by adopting a visual method after pesticide application, and recording in detail; applying the medicine for 3 days, and performing diagonal survey (4 points are randomly selected in each cell, each point is 0.25 m)²) Carrying out weeding effect investigation, and respectively recording the total number of each weed in each cell; the total plant number and fresh weight of each weed were investigated separately 150 days after application. While investigating the efficacy, the treatments were observed to have no phytotoxicity to garlic.

Third, data investigation and analysis

The plant control effect and fresh weight control effect are calculated according to the following formulas:

(C) plant control effect₁-T₁)/C₁×100％

In the formula: c₁-number of weed plants in control group; t is₁Treatment group weed plant number.

Fresh weight control effect ═ C₂-T₂)/C₂×100％

In the formula: c₂-control group weed fresh weight; t is₂Treatment group fresh weight of weeds.

And the data processing adopts DPS 7.5 software for analysis, and the Duncan new re-polarization method is used for the analysis of the difference significance.

Tetrafluoropyraflufen, oxadiazon and pendimethalin mixed for controlling garlic field weeds

The results of the investigation of the weed plant control effect after 30 days of application are shown in Table 2. The 19 percent diflufenican-oxa-dimethyl dispersible oil suspending agent has good control effects on 5 weeds such as alopecurus, shepherd's purse, Convolvulus arvensis, cleavers and aralia elata, and the control effects of the total plants are respectively 90.5 percent, 95.6 percent and 96.4 percent; 300g a.i./hm of 30% diflufenican suspension²The compound bactericide has poor control effect on gramineous weeds such as alopecurus maiden, general control effect on Convolvulus arvensis and cleavers, and good control effect on shepherd's purse and cleavers, wherein the control effect of the total plants is 66.1 percent; 375g a.i./hm oxadiazon emulsifiable concentrate 250g/L²The control effect on the alopecurus as a whole is good, and the control effect on cleavers, the nostoc and the field bindweed is better, and the control effect on the total plants is 87.6 percent; 990g a.i./hm of 33 percent pendimethalin missible oil²The pesticide has general control effect on the field bindweed, the cephalanoplos segetum and the cleavers, has better control effect on the alopecurus maiden and the capsella bursa-pastoris, and has the control effect of 46.8 percent on the total plants. In general, the ternary combination of diflufenican, oxadiazon and pendimethalin is relatively three single agents, so that the weed control spectrum is expanded, and the gramineous and broad weeds in the garlic field can be effectively prevented and killed.

TABLE 2 Diflufenican, oxadiazon and pendimethalin in combination for controlling weeds in garlic field (30d)

TABLE 3 Diflufenican, oxadiazon and pendimethalin in combination for controlling weeds in garlic field (150d)

The results of the investigation of the weed control effect 150 days after the application are shown in Table 3. 19 percent of difluoride-oxadixylin dispersible oil suspending agent has good control effect on 5 weeds such as alopecurus, shepherd's purse, Convolvulus arvensis, cleavers and aralia elata, although the control effect is reduced, the control effect on the shepherd's purse and the cleavers is not good, compared with 30 days after the pesticide, the control effect on the total plants is respectively 82.7 percent, 89.2 percent and 91.8 percent; 300g a.i./hm of 30% diflufenican suspension²The compound bactericide has poor control effect on gramineous weeds such as alopecurus maiden, general control effect on Convolvulus arvensis and cleavers, good control effect on shepherd's purse and cleavers, 63.5 percent of control effect of total plants and less reduction of overall control effect; 375g a.i./hm oxadiazon emulsifiable concentrate 250g/L²The control effect on the alopecurus as a whole is generally good, the control effect on cleavers, the nostoc and the field bindweed is relatively good, but the control effect of the whole total plant is reduced to 66.8 percent; 990g a.i./hm of 33 percent pendimethalin missible oil²The control effect on the field bindweed, the cephalanoplos segetum and the cleavers is general, the control effect on the alopecurus and the capsella bursa-pastoris is also reduced, and the control effect on the total plants is 36.4 percent. In general, the ternary combination of diflufenican, oxadiazon and pendimethalin enlarges the weed control spectrum and improves the lasting period compared with three single agents.

TABLE 4 fresh weight control of weeds in garlic field with diflufenican, oxadiazon and pendimethalin

The results of the fresh weight effect investigation of the weed plants 150 days after the application of the herbicide are shown in Table 4. The 19 percent difluoride-oxa-dimethyl dispersible oil suspending agent has good overall control effect on 5 weeds such as alopecurus, shepherd's purse, Convolvulus arvensis, cleavers and aralia elata, wherein the best control effect on the shepherd's purse and cleavers is that the total fresh weight control effect is 84.7 percent, 90.7 percent and 93.2 percent respectively; 300g a.i./hm of 30% diflufenican suspension²Has poor control effect on gramineous weeds such as alopecurus, general control effect on Convolvulus arvensis and aralia cordata, and control effect on shepherd's purse and cleaversHas better control effect, and the total fresh weight control effect is 68.2 percent; 375g a.i./hm oxadiazon emulsifiable concentrate 250g/L²The control effect on the alopecurus as a whole is generally good, and the control effect on cleavers, nostoc and Convolvulus arvensis is relatively good, but the total fresh weight control effect of the whole is 70.4%; 990g a.i./hm of 33 percent pendimethalin missible oil²The control effect on the field bindweed, the cephalanoplos segetum and the cleavers is general, the control effect on the alopecurus and the shepherd's purse is general, and the total fresh weight control effect is 40.8 percent. On the whole, the fresh weight control effect of 150 percent after the pesticide is applied, and the ternary combination of diflufenican, oxadiazon and pendimethalin expands the weed control spectrum and increases the effective period at the same time compared with three single agents, in particular to capsella bursa-pastoris and cleavers. The dosage of the 19 percent diflufenican-oxa-dimethyl dispersible oil suspending agent is 950, 1425 and 1900g a.i./hm²Is safe to the garlic seedling stage, and has no influence on the garlic yield in the later stage.

Although the present invention has been described with reference to the specific embodiments, it is not intended to limit the scope of the present invention, and various modifications and variations can be made by those skilled in the art without inventive efforts based on the technical solution of the present invention.