CN104982443A - Weeding composition with oxaziclomefone and mefenacet - Google Patents
Weeding composition with oxaziclomefone and mefenacet Download PDFInfo
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Abstract
The invention discloses a paddy field weeding composition with oxaziclomefone and mefenacet and the application of the paddy field weeding composition. The paddy field weeding composition is composed of the first active component oxaziclomefone, the second active component mefenacet and auxiliaries. The weight ratio of the first active component to the second active component is (0.1-100):(10-120). The composition can be prepared into suspending agents, dispersible oil suspending agents, wettable powder, water dispersible granules and granula allowed agriculturally. The composition is reasonable in component, good in weeding effect and low in pesticide use cost, the activity and the weeding effect of the composition are not simply adding the activities of all the components, and compared with an existing single preparation, the composition has the remarkable weeding effect, besides, the remarkable synergistic effect is achieved, resistance is delayed, good safety is achieved, and the composition meets the requirement for the safety of pesticide preparations. The composition is used for preemergence weed closing treatment and post-emergence weed early-stage treatment of transplanting fields and direct seeding fields, and has high weeding activity on the weeds of paddy fields.
Description
Technical field
The present invention relates to a kind of Herbicidal composition for rice field, be made up of a Huo Cheng oxaziclomefone and mefenacet and auxiliary agent, belong to technical field of compounded pesticide.
Background technology
Oxaziclomefone, has another name called barnyard grass peace, English name oxaziclomefone, chemical name 3-[1-(3., 5-dichlorophenyl)-1-Methylethyl]-2,3-dihydro-6-methyl-5-phenyl-4H-1,3-oxazine-4-ketone.Belonging to organic heterocyclic class, is inner sucting conduction type herbicide for paddy field, primarily of root and the cauline leaf basal sink of weeds.Weeds contact medicament after leaves and stems chlorosis, stop growing, until withered.The suitable dispenser phase is long, the lasting period is long, higher to the selection safety of paddy rice, prevents and kill off the multiple weeds such as barnyard grass, moleplant seed, waterwort, difformed galingale herb.
Mefenacet, is again ring grass amine, English name mefenacet, chemical name: 2-[4-morpholinodithio-2-base oxygen-N-exalgine.Be a kind of selectivity inner-adsorption conduction-type herbicide, mainly through bud scale and root absorption, conduct to young shoot and the tender leaf of weeds through xylem and phloem, stop the cell division of weed growth point to be extended, finally cause plant dead.Growing point place is gathered in very soon after grassy weed (barnyard grass) contacts this medicine, effectively can prevent and kill off grassy weed, have special efficacy to barnyard grass in rudiment to the 2 leaf phase, to moleplant seed, needle spikesedge herb, wartwort, Monochoria vaginalis, mexicana, special-shaped nutgrass flatsedge, flat nutgrass flatsedge, cyperus iria and for many years aquatic nutgrass flatsedge also have certain preventive effect.But have that to be used alone cost high, be unfavorable for that spread uses, poor to part broad leaved weed preventive effect.
A kind of weed killer herbicide of the single use of paddy field, the generation of control paddy field weed that can not be fully effective, if consumption is excessive, easily causes residual hazard to this season crop or succession crop.Oxaziclomefone and mefenacet are all not identical in chemical classes with the mechanism of action, widely different on water prevention weeds in paddy field.By literature search, oxaziclomefone and the composite relevant report of mefenacet is still found no at present.
Inventor is through the screening of a large amount of formula indoors and field control effectiveness test, find oxaziclomefone and mefenacet are carried out within the specific limits composite after, effective to weeds early time treatment after transplanted rice field, live Tian Miaoqian weeds Seal treatment and seedling, to annual gramineous weed, broad leaved weed and sedge weeds such as paddy field barnyard grass, moleplant seed, waterwort, difformed galingale herbs, there is obvious synergistic effect, control of weeds spectrum can be expanded, reduce use cost, delaying drug resistance is high to crop safety.
Summary of the invention
The object of the present invention is to provide a kind of component reasonable, synergistic effect is remarkable, and herbicidal effect is good, and control of weeds spectrum expands, and drug cost is low, energy delaying drug resistance, and the Herbicidal combinations to rice safety.
Another object of the present invention is to the Herbicidal combinations preparation formulation that Han You oxaziclomefone and mefenacet are provided.
Another object of the present invention is to provide above-mentioned composition preventing and kill off the application on paddy field weed.
In order to overcome the defect of existing unitary agent, technical scheme of the present invention solves like this, and the Herbicidal combinations of a kind of Han You oxaziclomefone and mefenacet, is characterized in that, comprising:
A) property alive becomes a point oxaziclomefone;
B) the second active component mefenacet;
The weight ratio of the first active component and the second active component is (0.1 ~ 100): (10 ~ 120), is preferably (0.3 ~ 70): (20 ~ 80).
The preparation formulation that the Herbicidal combinations of oxaziclomefone of the present invention and mefenacet can be prepared according to the method that those skilled in the art of the present technique are known is suspending agent, dispersibles oil-suspending agent, wetting powder, water dispersible granules, granule.
To suspending agent, spendable auxiliary agent has: dispersant as polycarboxylate, lignosulfonates, alkyl naphthalene formaldehyde condensate sulfonates, alkylphenol-polyethenoxy base ether phosphate, alkylphenol-polyethenoxy base ether sulfonate, phenethyl phenol polyethenoxy base ether phosphate, alkyl polyoxyethylene ether sulfonate, polyoxyethylene polyoxypropylene base ether block copolymers, to pull open in powder, alkylpolyoxyethylene phosphate one or more; Wetting agent as alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate, phenethyl phenol polyethenoxy base ether phosphate, alkyl sulfate, alkylsulfonate, alkylnaphthalene sulfonate, alkyl phenol formaldehyde resin polyoxyethylene ether, triphenoethyl benzene phenol polyoxyethylene polyoxypropylene block polymer one or more; Thickener as in xanthans, polyvinyl alcohol, bentonite, aluminium-magnesium silicate, carboxymethyl cellulose, carboxyethyl cellulose, methylcellulose one or more; Preservative as in formaldehyde, benzoic acid, Sodium Benzoate, potassium sorbate, isothiazolinone one or more; Defoamer is as one or more in silicone oil, silicone compound, C10-20 saturated fat acid compounds, C8-10 aliphatic alcohols, hexanol, butanols, octanol; Antifreezing agent as in ethylene glycol, propane diols, glycerine, polyethylene glycol, sorbierite, urea, inorganic salts one or more; Water is deionized water.
To dispersibling oil-suspending agent, spendable auxiliary agent has: dispersant such as polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate (dispersing agent NNO), Huntsman Corporation of TERSPERSE 2020(U.S. HUNTSMAN produce, alkyl naphthalene sulfonic acid salt) in one or more, emulsifier is as BY(castor oil polyoxyethylene ether) serial emulsifier (BY-110, BY-125, BY-140), Nongru-700 #(common name: alkyl phenol formaldehyde resin polyoxyethylene ether), agriculture breast 2201, this dish-60#(common name: sorbitan monostearate), Tween-60 #(common name: sorbitan monostearate APEO), agriculture breast 1601#(common name: phenethyl phenol polyoxyethylene poly-oxygen propylene aether), Huntsman Corporation of the TERSPERSE 4894(U.S. produce) in one or more, wetting agent such as alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate, alkylphenol polyoxyethylene phosphate, phenethyl phenol polyethenoxy base ether phosphate, alkyl sulfate, alkylsulfonate, naphthalene sulfonate, Huntsman Corporation of the TERSPERSE 2500(U.S. produce) in one or more, thickener as in white carbon, polyvinyl alcohol, bentonite, aluminium-magnesium silicate one or more, antifreezing agent as ethylene glycol, propane diols, glycerine, urea, inorganic salts as in sodium chloride one or more, dispersion medium as soybean oil, rapeseed oil, cottonseed oil, paddy rice oil, castor oil, palm oil, epoxidized soybean oil, methyl oleate and esterification oils, diesel oil, machine oil, mineral oil, and esters solvent as in repefral, dibutyl phthalate, ethyl acetate, methyl benzoate one or more.
To wetting powder, spendable auxiliary agent has: dispersant as in polycarboxylate, lignosulfonates, polyoxyethylene polyoxypropylene base ether block copolymers, alkyl naphthalene formaldehyde condensate sulfonates, alkylphenol-polyethenoxy base ether phosphate, aliphatic alcohol polyoxyvinethene phosphate, alkylphenol-polyethenoxy base ether sulfonate one or more; Wetting agent as in alkyl sulfate, alkylsulfonate, naphthalene sulfonate one or more; Filler as ammonium sulfate, urea, sucrose, glucose, diatomite, kaolin, white carbon, fine particle calcium carbonate, talcum powder, attapulgite, potter's clay one or more.
To water dispersible granules, spendable auxiliary agent has: dispersant as in polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate one or more; Wetting agent as in alkyl sulfate, alkylsulfonate, naphthalene sulfonate one or more; Disintegrant as in ammonium sulfate, sodium sulphate, polyvinylpyrrolidone, starch and derivative thereof, bentonite one or more; Binding agent is as one or more in starch, glucose, polyvinyl alcohol (PVA), polyethylene glycol, sodium carboxymethylcellulose, sucrose; Filler as diatomite, kaolin, white carbon, fine particle calcium carbonate, talcum powder, attapulgite, potter's clay one or more.
To granule, spendable auxiliary agent has: carrier is as one or more in clay, kaolin, talcum, calcium carbonate, corn starch, alumina silicate; Dispersant is as one or more in polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate; Wetting agent is as one or more in alkyl sulfate, alkylsulfonate, naphthalene sulfonate; Adhesive is as one or more in polyvinyl alcohol, dextrin, polyvinylpyrrolidone.
Instant component is reasonable, and preventive effect is better than activity when each component is used separately, has synergistic effect, expands control of weeds spectrum, reduces spraying times, reduce cost accounting, delaying drug resistance, good to crop safety, meets the security requirement of pesticidal preparations.The present invention has significant control efficiency to annual gramineous weed, broad leaved weed and sedge weeds such as paddy field barnyard grass, moleplant seed, waterwort, Monochoria vaginalis, difformed galingale herbs.
Embodiment
Below by Toxicity Determination, oxaziclomefone is described and mefenacet is composite whether has synergistic effect to paddy field weed.
In order to prevent and kill off paddy field weed, our Yi oxaziclomefone and mefenacet have carried out mutual composite synergy research, and test method is with reference to " People's Republic of China's agricultural industry criteria NY/T1155.3-2006 farm-chemical indoor determination test rule weed killer herbicide the 3rd part: active determination test soil spray-on process " and " People's Republic of China's agricultural industry criteria NY/T1155.7-2006 farm-chemical indoor determination test rule weed killer herbicide the 7th part: the synergy mensuration of mixture ".
Subjects be paddy field barnyard grass (
echinochloa crusgalli), moleplant seed (
leptochloa chinensis), Monochoria vaginalis (
monochoria vaginalis), difformed galingale herb (
cyperus difformis).
Test adopts the air-dry sandy loam that sieves that the content of organic matter is 2%, pH is 6.8, permeability is good.Select to be easy to cultivate, breeding time consistent barnyard grass, moleplant seed, Monochoria vaginalis, difformed galingale herb seed, germination rate is all more than 80%.
Test soil is quantitatively filled to 4/5 place of basin alms bowl, adopts infiltrating irrigation mode bottom basin alms bowl, make soil complete wetting.By barnyard grass, Monochoria vaginalis, moleplant seed, the uniform broadcasting of difformed galingale herb seed in soil surface, earthing 1.0cm, carries out soil spraying process after sowing 24h.
Single dose and each Mixed Pharmacy arrange 5 variable concentrations gradients (on the basis of preliminary experiment result, different according to dosages distribution, concentration gradient arranges also different, and rate of preventing and kill off sets by geometric progression in the scope of 5% ~ 90%).If clear water contrasts, repeat 4 times.Weeds are in germination period, carry out spraying process from low dosage to high dose respectively.Process is placed in greenhouse to cultivate and observes, with infiltrating irrigation mode moisturizing bottom basin alms bowl.
Process the rear fresh weight preventive effect calculating each chemicals treatment for 21 days, by the linear regression analysis between the probit value of preventive effect and the logarithm value of series concentration, obtain the ED of each medicament
50value, calculates the co-toxicity coefficient (CTC) of mixture, evaluates the activity of reagent agent to weeds with this by the abundant method of Sun Yun.
The co-toxicity coefficient (CTC) >=120 of complex preparation shows as synergistic effect; CTC≤80 show as antagonism; 80 < CTC < 120 show as summation action.
Table 1 oxaziclomefone and mefenacet combine the Toxicity Determination to barnyard grass
Table 2 oxaziclomefone and mefenacet combine the Toxicity Determination to moleplant seed
Table 3 oxaziclomefone and mefenacet combine the Toxicity Determination to Monochoria vaginalis
Table 4 oxaziclomefone and mefenacet combine the Toxicity Determination to difformed galingale herb
Toxicity Determination result shows: oxaziclomefone and mefenacet with weight ratio for (0.1 ~ 100): (10 ~ 120) are mixed all has good synergistic effect to barnyard grass, moleplant seed, Monochoria vaginalis, difformed galingale herb, weight ratio is (0.3 ~ 70): time (20 ~ 80), and synergistic effect is the most remarkable.
In order to better the present invention is described, be described further content of the present invention below in conjunction with embodiment, the percentage in formula is all weight percentage.
Example of formulations 1
Take 10% oxaziclomefone, 20% mefenacet, Huntsman Corporation of the 1.5%TERSPERSE 2500(U.S. produce), 2%T polyoxyethylene polyoxypropylene base ether block copolymers, 1% carboxymethyl cellulose, 0.2% xanthans, 5% ethylene glycol, 0.5% formaldehyde, 0.5% butanols, deionized water add to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear dispersion 30min, with 30% oxaziclomefone mefenacet suspending agent obtained after sand mill sand milling.
Example of formulations 2
Take 20% oxaziclomefone, 15% mefenacet, 2% alkyl phenol formaldehyde resin polyoxyethylene ether, Huntsman Corporation of the 3%TERSPERSE 2020(U.S. produce), 0.2% aluminium-magnesium silicate, 5% propane diols, 0.5% benzoic acid, 0.5% silicone defoaming agent (trade name: s-29 Nanjing "four news" (new ideas applied chemistry product Company), deionized water adds to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear dispersion 30min, with 35% oxaziclomefone mefenacet suspending agent obtained after sand mill sand milling.
Example of formulations 3
Take 25% oxaziclomefone, 15% mefenacet, 2% Negel, Huntsman Corporation of the 3%TERSPERSE 2020(U.S. produce), 0.2% xanthans, 5% polyethylene glycol, 0.5% Sodium Benzoate, 0.5% octanol, deionized water adds to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear dispersion 30min, with 40% oxaziclomefone mefenacet suspending agent obtained after sand mill sand milling.
Example of formulations 4
Take 5% oxaziclomefone, 25% mefenacet, Huntsman Corporation of the 2%TERSPERSE 2020(U.S. produce), 4% this dish-60#, 3% agriculture breast 1601#, 4% agriculture breast 2201#, 1% alkylphenol polyoxyethylene phosphate, 0.5% white carbon, 5% ethylene glycol, little wheat oil adds to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear dispersion 30min, dispersibles oil-suspending agent with 30% oxaziclomefone mefenacet obtained after sand mill sand milling.
Example of formulations 5
Take 20% oxaziclomefone, 15% mefenacet, 2% dispersing agent NNO, 3% Nongru-700 #, 10% Huntsman Corporation of BY-125,1%TERSPERSE 2500(U.S. produce), 1% aluminium-magnesium silicate, 3% propane diols, mineral oil adds to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear dispersion 30min, dispersibles oil-suspending agent with 35% oxaziclomefone mefenacet obtained after sand mill sand milling.
Example of formulations 6
Take 10% oxaziclomefone, 15% mefenacet, 2% sodium lignin sulfonate, 3% Nongru-700 #, 10% BY-110,1% sodium naphthalene sulfonate, 1% bentonite, 3% glycerol epoxy soybean oil add to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear dispersion 30min, dispersibles oil-suspending agent with 25% oxaziclomefone mefenacet obtained after sand mill sand milling.
Example of formulations 7
Take 15% oxaziclomefone, 45% mefenacet, 4% polyoxyethylene polyoxypropylene base ether block copolymers, 2% Nekal BX (nekal), 2% dodecyl sodium sulfate, 3% talcum powder, fine particle calcium carbonate adds to 100% weight portion.Above-mentioned raw materials, through mixing, obtains 60% oxaziclomefone mefenacet wetting powder after air-flow crushing.
Example of formulations 8
Take 25% oxaziclomefone, 20% mefenacet, 4% polycarboxylic acids calcium, 2% aliphatic alcohol polyoxyvinethene phosphate, 2% lauryl sodium sulfate, 3% White Carbon black, diatomite adds to 100% weight portion.Above-mentioned raw materials, through mixing, obtains 45% oxaziclomefone mefenacet wetting powder after air-flow crushing.
Example of formulations 9
Take 10% oxaziclomefone, 30% mefenacet, 5% calcium lignosulfonate, 2% alkylphenol-polyethenoxy base ether sulfonic acid sodium, 2% neopelex, 5% attapulgite, kaolin adds to 100% weight portion.Above-mentioned raw materials, through mixing, obtains 40% oxaziclomefone mefenacet wetting powder after air-flow crushing.
Example of formulations 10
Take 20% oxaziclomefone, 25% mefenacet, 2% sodium lignin sulfonate, 2% dispersing agent NNO (alkylnaphthalene sulfonate formaldehyde condensation products), 1% Nekal BX (nekal), 1% sodium alkyl sulfonate, 1% polyethylene glycol, diatomite adds to 100% weight portion.Namely the method for above-mentioned raw materials frequent regulation water intaking dispersible granule mixes, ultra micro air-flow crushing, mixing, granulation step produce 45% oxaziclomefone mefenacet water dispersible granules.
Example of formulations 11
Take 10% oxaziclomefone, 60% mefenacet, 2% TERSPERSE 2700(polycarboxylate, Huntsman Corporation of the U.S. produce), 2% dispersing agent NNO (alkylnaphthalene sulfonate formaldehyde condensation products), 1% Nekal BX (nekal), 1% sodium alkyl sulfonate, 1% glucose, talcum powder adds to 100% weight portion.Namely the method for above-mentioned raw materials frequent regulation water intaking dispersible granule mixes, ultra micro air-flow crushing, mixing, granulation step produce 70% oxaziclomefone mefenacet water dispersible granules.
Example of formulations 12
Take 20% oxaziclomefone, 35% mefenacet, 4% Negel, 2% sodium lignin sulfonate, 2% sodium alkyl sulfonate, 2%K-12(lauryl sodium sulfate), 3% sodium sulphate, 5% sulphur ammonium, kaolin adds to 100% weight portion.Namely the method for above-mentioned raw materials frequent regulation water intaking dispersible granule mixes, ultra micro air-flow crushing, mixing, granulation step produce 55% oxaziclomefone mefenacet water dispersible granules.
Example of formulations 13
Take 0.3% oxaziclomefone, 4.7% mefenacet, 5% Negel, 3% polycarboxylic acids sodium, 3% dextrin, calcium carbonate adds to 100% weight portion.Above-mentioned raw materials mixes in mixed cylinder, through extruding, granulation, drying, and through the obtained 5% oxaziclomefone mefenacet granule of screening step.
Example of formulations 14
Take 0.5% oxaziclomefone, 4.5% mefenacet, 5% sodium lignin sulfonate, 3% sodium alkyl sulfonate, 3% polyvinyl alcohol, clay adds to 100% weight portion.Above-mentioned raw materials mixes in mixed cylinder, through extruding, granulation, drying, and through the obtained 5% oxaziclomefone mefenacet granule of screening step.
Example of formulations 15
Take 0.2% oxaziclomefone, 3.8% mefenacet, 5% polycarboxylic acids sodium, 3% sodium naphthalene sulfonate, 3% polyvinylpyrrolidone, kaolin adds to 100% weight portion.Above-mentioned raw materials mixes in mixed cylinder, through extruding, granulation, drying, and through the obtained 4% oxaziclomefone mefenacet granule of screening step.
Biological Examples 1: water prevention weeds in paddy field field control effectiveness test.
Inventor has carried out example of formulations 1(30% oxaziclomefone mefenacet suspending agent in 2014 in Junichiro Koizumi village of xiangtan, hunan province county), example of formulations 4(30% oxaziclomefone mefenacet dispersibles oil-suspending agent), example of formulations 7(60% oxaziclomefone mefenacet wetting powder), example of formulations 10(45% oxaziclomefone mefenacet water dispersible granules) water prevention weeds in paddy field field control effectiveness test, demonstrate the control efficiency of this medicament to paddy field weed and the safety to paddy rice.
Trial crops is paddy rice, and controlling object is paddy field annual gramineous weed, broad leaved weed and nutgrass flatsedge: barnyard grass (
echinochloa crusgalli), moleplant seed (
leptochloa chinensis), Monochoria vaginalis (
monochoria vaginalis), difformed galingale herb (
cyperus difformis), during dispenser, paddy rice broadcasts latter 3 days, and be in for 1 leaf 1 heart stage, weeds are in germination period.Experimental field physical features is smooth, and soil fertility is medium, pH value 7.1.Test medicine and dosage refer to table 5.Separately establish blank, often process 4 times and repeat, every community 30 ㎡, Gong28Ge community, random district, community group arranges.Adopt conventional spray-on process, mu dispenser liquid 45kg.
After medicine, 30d investigates each process weeds strain preventive effect.Investigation method is that 2 points are investigated, often some 0.25m in every community
2(0.5m × 0.5m).Drug effect computational methods are:
Wherein: CK is blank district careless number (or fresh weight) alive; PT is the remaining careless number (or fresh weight) for the treatment of region.
Table 5 water prevention weeds in paddy field field control effectiveness test strain preventive effect
Field test results shows, 30% oxaziclomefone mefenacet suspending agent, 30% oxaziclomefone mefenacet dispersible oil-suspending agent, 60% oxaziclomefone mefenacet wetting powder, 45% oxaziclomefone mefenacet water dispersible granules dosage are 25 g a.i./mus, have good control efficiency to paddy field weed, after medicine, the average preventive effect of 30 days is all obviously better than the preventive effect of 1% oxaziclomefone suspending agent 3 g a.i./mu, 50% mefenacet wetting powder 30g a.i./mu.By to 30 days significance of difference Fen Xi ， oxaziclomefone after medicine and mefenacet combines and other single dose process preventive effect otherness is remarkable.
Security survey: after medicine, 7d, 15d estimate the safety of each process to rice seedlings.Observed result is, all reagent agents, to paddy growth safety, occur without the poisoning such as chlorisis, dwarfing phenomenon.
In sum, composition of the present invention is employing two kinds of active component compound schemes, its activity and herbicidal effect are not the simple superposition of each composition activity, compared with existing unitary agent, except there is significant herbicidal effect, and there is significant synergistic effect, preparation less residue, pollution-free to crop, safety is good, meets the security requirement of pesticidal preparations.
Claims (5)
1. one kind contains the Herbicidal combinations of oxaziclomefone and mefenacet, it is characterized in that: become point oxaziclomefone to form with the second active component mefenacet and auxiliary agent by a property alive, the weight ratio of the first active component and the second active component is (0.1 ~ 100): (10 ~ 120).
2. the Herbicidal combinations of Han oxaziclomefone and mefenacet according to claim 1, is characterized in that: the weight ratio of the first active component and the second active component is (0.3 ~ 70): (20 ~ 80).
3. the Herbicidal combinations of Han oxaziclomefone and mefenacet according to claim 1, is characterized in that: described combination dosage form is suspending agent, dispersibles oil-suspending agent, wetting powder, water dispersible granules, granule.
4. the application of Herbicidal combinations on water prevention rice field annual gramineous weed, broad leaved weed and sedge weed of Han oxaziclomefone and mefenacet according to claim 1.
5. apply according to claim 4, paddy field annual gramineous weed is barnyard grass, moleplant seed, and broad leaved weed is Monochoria vaginalis, waterwort, and sedge weed is difformed galingale herb.
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