CN1020660C - Method of controlling soil pests using a phosphorothioate compound - Google Patents
Method of controlling soil pests using a phosphorothioate compound Download PDFInfo
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- CN1020660C CN1020660C CN 85104636 CN85104636A CN1020660C CN 1020660 C CN1020660 C CN 1020660C CN 85104636 CN85104636 CN 85104636 CN 85104636 A CN85104636 A CN 85104636A CN 1020660 C CN1020660 C CN 1020660C
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- soil
- thiophosphate
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- insect
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Abstract
The present invention relates to a method for controlling soil pests by a thiophosphate compound, particularly to a method for controlling larvae selected from radicivorous insects, cutworm and wireworm, and the larvae are perched on soil and eat vegetables. The present invention comprises steps of applying 0, 0-diethyl 0-(1, 2, 2, 2,-tetrachloro ethyl) thiophosphate with effective disinfestation dosage to larval perching soil.
Description
The present invention is a kind of method of utilizing phosphorothioate compound control soil pests.
United States Patent (USP) has been described some halogenated phosphates of living as desinsection for No. 3027296, comprises 0,0-diethyl 0-(1,2,2,2-tetrachloro ethyl) thiophosphate.This patent has been showed some halogenated phosphate to housefly, the insecticidal activity of Tetranychus urticae and bean aphid test.But in these tests, neither one relates to these halophosphate compound were used and be used in insect or its larva as soil insecticide soil and dwells in the border.This patent points out, near the soil certain compound is being applied to growing plant or when directly imposing on plant, has interior absorption insecticidal activity.
The invention provides and a kind ofly control those and inhabit in the soil and get the insect larvae of eating in growing plant, promptly be selected from may-bug, the method of root eating insect and wireworm, comprising in the soil of larva is dwelt the border, using 0 of effective desinsection dosage, 0-diethyl 0-(1,2,2,2-tetrachloro ethyl) thiophosphate.
0,0-diethyl 0-(1,2,2,2-tetrachloro ethyl) thiophosphate, some is dwelt in soil and gets the insect larvae of eating in growing plant, have very high, beyond thought effectiveness, and in a period of time of continuing, have lasting effectiveness.Because the larva that the different types of soil that will control is perched, do not work the mischief in the same period, therefore before those plants that may be endangered by larva grow, want only to pass through and use a larvicide just to control these larvas effectively be very difficult.For example, black cutworm is normally a kind of to the very big insect of corn seedling harm, and usually the 2-3 week behind corn planting, they haunt the below, top layer of soil, and bite seedling broken at place, the face of land.By contrast, the 5-7 week of pumpkin 12 asterophyllite first behind the corn planting of being everlasting causes seriously and causes harm, and they haunt the place of 6 English inch below the soil, get the food corn root.And wireworm exists whole growth in season, and they haunt soil, and the harm seed, stem under the face of land or root.
Will use before plant grows, and can control larva, just require a kind of permanently effectively, and don't be the material of the internal-suction type mode of action.
Used compound in the present invention's the method is a kind of for endangering growing plant in the control soil, comprises the useful compound of various insect larvas of the seedling that survives.As the soil insecticide of protection growing plant, the effectiveness of this material is from the viewpoint of usually low leaf activity material.Be wonderful.Material among the present invention is very suitable for controlling chrysomelid (Di
Rotica) (insect larvae of food root), for example, corn root leaf A (DiaBrotica virgfera Leconte), northern corn root-worm (DiaBrotica longicornis) and 11 star melon beetles (DiaBrotica undecimpunctata howardi), the pumpkin 12 asterophyllite first of western part, the north and southern each department, and cucumber 11 asterophyllite first subspecies (DiaBrotica undecimpunetata undecimpunctata).Be particularly suitable for the larval phase of following insect, the slow noctuid (Crymodes) of cutworm, (Agrotis) clearwing, Eight characters ground brave (Amathes), root eating insect (Euxoa), look noctuid (
PEridrona), bristle noctuid (Lacinipolia), bronze ground noctuid (Nepheloaes), relocation site tiger (ActeBia), noctuid (Feltia), beans root eating insect (Loxagrotis) and click beetle (Agriotes), wireworm (Limonius), sandy ground wireworm (Horistonotus), nonirrigated farmland wireworm (Ctenicera), wide chest wireworm (Conoderus).Some for what be familiar with are in the above-mentioned larva kind: black cutworm (Agrotisipsilon), (Hufnagel) (black root eating insect), it is three kinds of above-mentioned chrysomelid (DiaBrotica) classes for a wheat wireworm (Agriotesmanous).
The material that the present invention is used is easy to be shaped to granule or pulvis, wherein contains the solid dilution, and the material used with the present invention mixes mutually.In these pharmaceutical formulations, contain the material that approximate weight is the present invention of 1-50% usually.When these preparations physically with after last table soil mixes gently, the effect of its Pest Control is better.Described mixing is when plant seed being broadcast into soil, or before, or carry out afterwards.
Material of the present invention also can be used as a kind of immersion liquid and uses, and promptly the present invention's material is dissolved in the solvent of plant-less toxicity, or dilution, or in the suitable water, thereby form a kind of solution or dispersion liquid.The concentrate of the material that contains the present invention can water be diluted in such immersion liquid, and emulsifier is made, and to use organic solvent, dilutes for best as toluene.
The ratio that is suitable for being applied in the mobilization compound in the soil is 0.01-11 kilogram/hectare, is best with 0.1-0.5 kilogram/hectare, particularly 0.5-4. kilogram/hectare.
The 0.0-diethyl 0-(1 that the present invention is used, 2,2,2 ,-tetrachloro ethyl) thiophosphate, available different, the conventional method preparation for preparing thiophosphate.One of them method is with phosphorus pentachloride acid treatment chloral, to obtain CCl
3CHClOpCl
4, obtain intermediate product CCl again with hydrogen sulfide treatment
3CHClOP(S) Cl
2Obtain ester required for the present invention with this dichloride of Ethanol Treatment.With in the reaction of Ethanol Treatment, can there be atent solvent to exist, but do not having under the situation of solvent, this step reaction also can be carried out satisfactorily.
Following example is used to explain the present invention.
The test of example 1. pumpkins 12 asterophyllite first
The compound of test is dissolved in acetone solvent, and fully mixes with dry soil.After residual the vaporing away of solvent, add the also abundant mixing of entry and make the temperature of soil reach 9%.
In a wide-mouth bottle, add the moistening soil of 60 grams, make it reach 1/2 place of bottle.Get two sweet corn seeds, to its surface sterilization 15 minutes, water flushing was then gone into these two seed kinds in bottle interior submarginal soil with 0.2% liquor natrii hypochloritis.Have an aperture on the surface of soil, (ovum of DiaBrotica undecimpunctata undecimpunctata insect puts into duck eye and the vermiculite of the humidity crossed with dusting cover is built 20 cucumber, 11 asterophyllite first subspecies.To lid on the bottle cap, covered two and be used for ventilating air for a short time.Bottle is placed under the lamp, and temperature remains on 27 ℃.
After one week, the bottle content is checked, to check larva alive.In first week with the compound of 3ppm or lower ratio just performance control ability person is arranged, afterwards give evaluation several weeks.The activity of 3ppm indicates feasible soil insect-killing vigor.
Result of the test is represented in order to following grade:
Grade control potentiality larva number
0 controls 0 fully
1 fabulous＞0～3
2 good＞3～6
3 general＞6～10
4 poor＞10
With 0,0-diethyl 0-(1,2,2,2-tetrachloro ethyl) thiophosphate and other three kinds of commercial result of the tests that are used for controlling the compound of soil pests and larva thereof provide the table worker, these three kinds of commodity compounds are carbofuran(2,3-dihydro-2,2-dimethyl-7-benzofuran methyl carbamate), chlorpyrifos(0,0-diethyl 0-(3,5, thiophosphate) and terbufos(S-(((the 6-trichloro-2-pyridyl), the 1-dimethyl ethyl) sulfo-) methyl) 0, the 0-diethyl phosphorothioate.）
The result of test clearly illustrates that, what the Pest Control of treatment in accordance with the present invention gained can any commercial compound of force rate is all high.
The result of table worker-pumpkin 12 asterophyllite first test
Use the grade after some weeks
Compound ppm 0248
According to basis 1.0 0000
Invent 0.3 0000
0.1 0 0 0 0
0.05 0 1 1 1
0.025 0 1 2 2
0.01 1 3 3 4
terbutos 1.0 0 0 0 0
0.3 0 1 0 0
0.1 4 4 4 3
carbofuran 1.0 0 0 0 0
0.3 0 1 1 1
0.1 2 4 - -
chlorpyrifos 1.0 0 0 0 0
0.3 0 0 0 0
0.1 1 1 1 -
0.05 3 4 3 -
-refer to not test.
Example 2, black cutworm test
Air dried field soil sieves and removes stone fragment and clod, is used for this test.Contain 1% the residual humidity of having an appointment in the soil.Claim 200 gram soil, in the wide-mouth bottle of packing into.The screening rate of the compound that is used to test is 2ppm～20ppm, forms with 18 milliliters of water that contain 0.05% surface active agent ATLO * 1045A trade mark.This 18 ml soln is poured in the soil of 200 grams and obtained 10% soil moisture, soil is weighed up 2 part of 60 secondary sample that restrains with powerful shake so that soil mixes from former 200 gram samples with compound, and put into wide-mouth bottle.Do a duck eye at soil surface, one 10 square millimeters artificial feed bolt is put into duck eye.Around food, do 5 duck eyes again, put into the black cutworm larvae (Agrotis ipsilon(Hufnagel) in one the 3rd age in each duck eye), and good with earth mulch.Give the bottle cap loam cake, covered 2 apertures, kept 48 hours, measure and the record result.Also comprised Chlorpyrifos in the test, it is what to have registered, the vegetation period control cutworm main matter.The table II has provided the result, shows that the present invention has shown that processing has suitable improvement to commerciality.
Table II-black cutworm result of the test
Compound ppm lethality %
The present invention 10 100
2 100
1 100
0.5 100
0.25 20
0.1 0
Chlorpyifos 20 100
2 100
1 40
0.5 0
Claims (4)
1, a kind of control inhabits the method for the insect larvae that is selected from may-bug, root eating insect and wireworm of soil and feeding plant, wherein in the soil that has larva to perch, use 0.01～11 kilogram/hectare 0,0-diethyl 0-[1,2,2,2-tetrachloro ethyl] thiophosphate.
2, a kind of method according to claim 1, wherein said insect larvae are chrysomelid (Diabrotica), cutworm (Agrotis) or click beetle (Agriotes).
3, a kind of method according to claim 1, the method for wherein using thiophosphate are it to be added in the topsoil and with topsoil stir to realize physical mixed.
4, a kind of method according to claim 1 is characterized in that, imposing on the dwell amount of thiophosphate in border of soil is 0.1-5 kilogram/hectare.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85104636 CN1020660C (en) | 1984-04-30 | 1985-06-15 | Method of controlling soil pests using a phosphorothioate compound |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US60509384A | 1984-04-30 | 1984-04-30 | |
| CN 85104636 CN1020660C (en) | 1984-04-30 | 1985-06-15 | Method of controlling soil pests using a phosphorothioate compound |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85104636A CN85104636A (en) | 1986-12-24 |
| CN1020660C true CN1020660C (en) | 1993-05-19 |
Family
ID=25741778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85104636 Expired - Lifetime CN1020660C (en) | 1984-04-30 | 1985-06-15 | Method of controlling soil pests using a phosphorothioate compound |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1020660C (en) |
-
1985
- 1985-06-15 CN CN 85104636 patent/CN1020660C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN85104636A (en) | 1986-12-24 |
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