CN117882734A - Agricultural pesticide containing dicycloprid and ethyl spinosad - Google Patents
Agricultural pesticide containing dicycloprid and ethyl spinosad Download PDFInfo
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- CN117882734A CN117882734A CN202311463552.1A CN202311463552A CN117882734A CN 117882734 A CN117882734 A CN 117882734A CN 202311463552 A CN202311463552 A CN 202311463552A CN 117882734 A CN117882734 A CN 117882734A
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- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses an agricultural pesticide containing dicycloprid and spinetoram, and belongs to the technical field of pesticides. The mass ratio of the dicycloprid to the spinetoram in the agricultural pesticide provided by the invention is 0.1:25-1.0:10; the agricultural pesticide also comprises alkyl polyglycoside, and the addition amount of the alkyl polyglycoside is 5 percent by mass percent. The agricultural pesticide provided by the invention has a control effect on lepidoptera pests, namely cnaphalocrocis medinalis, homoptera pests, namely tomato bemisia tabaci and thysanoptera pests, namely thrips, and the indoor toxicity measurement of the agricultural pesticide shows that when the compound mass ratio of the dipropyl cycloxaprid to the spinetoram is 0.1:15-0.7:10, the co-toxicity coefficient of the agricultural pesticide on the tomato bemisia tabaci is greater than 120, and the agricultural pesticide shows a synergistic effect. The invention provides an agricultural pesticide with better effect for controlling crop pests.
Description
Technical Field
The invention belongs to the technical field of pesticides, and relates to an agricultural pesticide containing dicycloprid and spinetoram.
Background
The hydroprene (afidopyropen) is a biological pesticide, belongs to a vanilloid receptor subfamily channel regulator of a chord vibration organ, and causes insects to lose sense of gravity, balance, sound, position, movement and the like and lose coordination and sense of direction by interfering with the regulation and control of a target insect vanillic acid transient receptor channel compound, so that the insects cannot eat and lose water, and finally cause the insects to starve and die. The hydroprene can reduce viral diseases and bacterial diseases transmitted by insect mediators, has low toxicity to mammals, fish, birds, bees and predatory insects, and is safe to non-target animals and terrestrial plants.
The spinetoram is also known as spinetoram, and has the commodity name of Ailvshi, is a spinosad pesticide produced by Tao Shiyi agricultural company through fermentation of actinomycete spinosad, is a mixture of spinetoram-J and spinetoram-L, and is a white solid with mildew taste. The spinetoram acts on nicotinic acetylcholine receptor and r-aminobutyric acid receptor in insect nerve, so that the insect body is insensitive to excitatory or inhibitory signal transmission reaction and affects normal nerve activity until death has high degradation speed in field, and has low toxicity to birds, fish, earthworms and aquatic plants.
In recent years, the application area of pesticides is continuously enlarged, the control effect of single-variety pesticides on certain pests is good, but the single pesticides have strong selectivity on the pests, narrow application range and short duration, and the long-term use can cause the problem of drug resistance of the pests. Therefore, the agricultural pesticide with broad spectrum and long acting is of great significance.
Disclosure of Invention
The invention provides an agricultural pesticide containing the hydroprene and the spinetoram, which aims to solve the problems that a single pesticide has stronger selectivity to pests, narrower application range and shorter lasting time and can cause the pests to have drug resistance after long-term use. The agricultural pesticide consists of the hydroprene and the spinetoram, also comprises alkyl polyglycoside, has the control effect on common thysanoptera, homoptera and lepidoptera pests, and provides an agricultural pesticide with better effect for controlling crop pests.
In order to achieve the technical aim of the invention, in one aspect, the invention provides an agricultural pesticide which consists of the dicycloprid and the spinetoram, wherein the mass ratio of the dicycloprid to the spinetoram is 0.1:25-1.0:10; the agricultural pesticide also comprises alkyl polyglycoside, and the addition amount of the alkyl polyglycoside is 5 percent by mass percent.
Further, in the agricultural pesticide provided by the invention, the mass ratio of the dicycloprid to the spinetoram is 0.1:15-0.7:10. Preferably, the mass ratio of the dicycloprid to the ethyl spinosad is 0.1:10.
Further, according to the invention, through the indoor toxicity measurement of the agricultural pesticide, when the compound mass ratio of the dicycloprid to the spinetoram is 0.1:15-0.7:10, the co-toxicity coefficient of the agricultural pesticide to the tomato bemisia tabaci is more than 120, and the synergistic effect is shown; wherein the co-toxicity coefficient is the largest when the compound mass ratio of the hydroprene to the spinetoram is 0.1:10, and the co-toxicity coefficient is 166.34, and the synergistic effect is optimal.
Further, the field test of the agricultural pesticide shows that the pesticide containing the dicycloprid and the spinetoram has higher control effect on rice leaf rollers after 15d of pesticide application, which is 87.64-98.51 percent higher than 65.46 percent and 77.81 percent of control effect when used by a single dose; the pesticide containing the hydroprene and the spinetoram has a higher control effect on thrips of 90.48-98.24 percent after being applied for 3 days, which is higher than 38.26 percent and 84.45 percent of the control effect when being used by a single dose; the compound pesticide shows that the compound pesticide has improved effect of preventing and controlling cnaphalocrocis medinalis and thrips when the compound pesticide is used.
Further, the field test of the agricultural pesticide shows that under the condition that the effective dosages of the same dicycloprid and the ethyl spinosad are applied, the addition of different surfactants has different control effects on the pesticide, and the control effect of the agricultural pesticide added with the alkyl polyglycoside on the cnaphalocrocis medinalis is higher than that of a test group added with tween-80 or OP-10 or alkylphenol polyoxyethylene, so that the control effect of the agricultural pesticide added with the alkyl polyglycoside is better.
In another aspect, the invention claims the use of the above agricultural insecticide for controlling lepidoptera pests, homoptera pests and thysanoptera pests. Lepidopteran pests include cnaphalocrocis medinalis; homopteran pests include tomato bemisia tabaci; the thysanoptera pests include thrips.
Compared with the prior art, the technical scheme provided by the invention has at least the following beneficial effects or advantages:
the agricultural pesticide containing the dicycloprid and the spinetoram has a control effect on homoptera pests, and has a synergistic effect when the dicycloprid and the spinetoram are used together. According to the invention, through indoor toxicity measurement of the agricultural pesticide, when the compound mass ratio of the dicycloprid to the spinetoram is 0.1:15-0.7:10, the co-toxicity coefficients of the agricultural pesticide to the tomato bemisia tabaci are all greater than 120, and the synergistic effect is shown; wherein the co-toxicity coefficient is the largest when the compound mass ratio of the hydroprene to the spinetoram is 0.1:10, and the co-toxicity coefficient is 166.34, and the synergistic effect is optimal.
The agricultural pesticide containing the dicycloprid and the spinetoram has a control effect on lepidoptera pests and thysanoptera pests. According to field experiments of agricultural pesticides, the pesticide containing the dicycloprid and the spinetoram has higher control effect on cnaphalocrocis medinalis after 15d of pesticide application, which is 87.64-98.51%, and is higher than 65.46% and 77.81% of control effect when used in single dose; the pesticide containing the hydroprene and the spinetoram has a higher control effect on thrips of 90.48-98.24 percent after being applied for 3 days, which is higher than 38.26 percent and 84.45 percent of the control effect when being used by a single dose; the compound pesticide shows that the compound pesticide has improved effect of preventing and controlling cnaphalocrocis medinalis and thrips when the compound pesticide is used.
The agricultural pesticide containing the dicycloprid and the spinetoram provided by the invention has the advantage that the added surfactant alkyl polyglycoside has an effect of improving the pesticide effect. According to field experiments of agricultural pesticides, the invention discovers that under the condition that effective doses of the same dicycloprid and the same spinetoram are applied, different control effects are generated on the pesticides by adding different surfactants, and the control effect of the agricultural pesticides added with the alkyl polyglycoside on rice leaf rollers is higher than that of a test group added with tween-80 or OP-10 or alkylphenol ethoxylates, so that the agricultural pesticides added with the alkyl polyglycoside provided by the invention are better in control effect.
Detailed Description
The following describes the technical aspects of the present invention with reference to examples, but the present invention is not limited to the following examples. The experimental methods and the detection methods in each embodiment are conventional methods unless otherwise specified; the reagents and materials are commercially available unless otherwise specified.
The hydroprene is purchased from Shaanxi Yikun Tex medicine technology Co., ltd, and the purity is 97%.
The ethyl spinosad is purchased from Shenzhen Shengzhen biotechnology Co., ltd and has a purity of 98%.
Alkyl polyglycosides were purchased from Shanghai Sail Biotechnology Co.
Example 1
The embodiment provides a formulation of the agricultural pesticide compounded by the dicycloprid and the spinetoram.
1. Suspending agent
The suspending agent comprises, by mass, 0.52 part of the dicycloprid, 15.91 parts of the spinetoram, 5 parts of the alkyl polyglycoside, 5 parts of the calcium dodecyl benzene sulfonate, 3 parts of the alkyl naphthalene sulfonate, 0.5 part of glycerol, 0.8 part of white carbon black and the balance of water per 100 parts of the suspending agent containing the dicycloprid and the spinetoram.
Weighing the components according to the parts by mass, adding the dicycloprid, the spinetoram, the alkyl polyglycoside, the calcium dodecyl benzene sulfonate, the alkyl naphthalene sulfonate and the white carbon black into a grinding kettle, grinding to a certain fineness, transferring the materials into the stirring kettle, adding the rest of the tricolor and the water, and fully and uniformly mixing to obtain the 15.5% suspending agent containing the dicycloprid and the spinetoram.
Example 2
The present example provides an indoor toxicity assay for agricultural pesticides.
The preparation type used in this example is suspending agent, the preparation method refers to example 1, and 5 series of mass concentrations of each single agent and mixed agent are prepared according to an equal ratio method.
The test involved 14 treatments in total, test 1: only the hydroprene is added; test 2: adding only ethyl spinosad; test 3: the mass ratio of the dicycloprid to the spinetoram is 0.1:25; test 4: the mass ratio of the dicycloprid to the spinetoram is 0.1:20; test 5: the mass ratio of the dicycloprid to the spinetoram is 0.1:15; test 6: the mass ratio of the dicycloprid to the spinetoram is 0.1:13; test 7: the mass ratio of the dicycloprid to the spinetoram is 0.1:12; test 8: the mass ratio of the dicycloprid to the spinetoram is 0.1:11; test 9: the mass ratio of the dicycloprid to the spinetoram is 0.1:10; test 10: the mass ratio of the dicycloprid to the spinetoram is 0.2:10; test 11: the mass ratio of the dicycloprid to the spinetoram is 0.3:10; test 12: the mass ratio of the dicycloprid to the spinetoram is 0.5:10; test 13: the mass ratio of the dicycloprid to the spinetoram is 0.7:10; test 14: the mass ratio of the dicycloprid to the spinetoram is 1.0:10.
The tomato bemisia tabaci nymphs are picked from a tomato planting base in the Zhongshan village of Shaanxi Yangyang, the picked nymphs are stabilized for 2-3 d at the indoor constant temperature of 25+/-1 ℃, and the tomato bemisia tabaci nymphs with strong viability, close weight and consistent growth are selected as the insect sources of bioassay. Dripping 30 mu L of prepared pesticides with different concentrations on the forechest of tested tomato bemisia tabaci nymphs, wherein each concentration gradient is treated, each treatment is repeated for 3 times, the treated tomato bemisia tabaci nymphs are put into a pest-culturing box, fresh tomato leaves are put into the box, the survival and death number (body stiffness, body is gently stirred by a writing brush and is marked as death) of the tested insects after 24 hours under the indoor constant temperature condition of 25+/-1 ℃, and the toxicity regression equation and LC are calculated 50 The co-toxicity coefficient was determined by grand cloud Peel method, and the Toxicity Index (TI) was 100 with the hydroprene as the standard agent, and the calculation results are shown in Table 1.
TTI = TI of standard agent x percentage of standard agent in mixed formulation + TI x B agent of ethylspinosad in mixed formulation
In the formula, ATI is the actually measured mixed toxicity index, TTI is the theoretical mixed toxicity index, and CTC is the co-toxicity coefficient of the compound agent. The synergy of the compound is judged by the CTC value, the CTC value is more than or equal to 120 and is equal to or less than 80 and is antagonistic, and the CTC value is more than 80 and is less than 100 and is additive.
Table 1: indoor toxicity measurement result of pesticide containing hydroprene and spinetoram on tomato bemisia tabaci
| Treatment group | Medicament treatment | LC 50 /(mg/L) | TI | ATI | TTI | CTC |
| Test 1 | Dipropiconazole (A) | 0.25 | 100 | - | - | - |
| Test 2 | Ethyl spinosad (B) | 3.56 | 7.02 | - | - | - |
| Test 3 | A:B＝0.1:25 | 2.54 | - | 9.84 | 9.35 | 105.24 |
| Test 4 | A:B＝0.1:20 | 2.08 | - | 12.02 | 10.56 | 113.53 |
| Test 5 | A:B＝0.1:15 | 1.65 | - | 15.15 | 11.88 | 127.53 |
| Test 6 | A:B＝0.1:13 | 1.22 | - | 20.49 | 15.35 | 133.49 |
| Test 7 | A:B＝0.1:12 | 0.83 | - | 30.12 | 21.17 | 142.28 |
| Experiment 8 | A:B＝0.1:11 | 0.54 | - | 46.30 | 30.20 | 153.31 |
| Test 9 | A:B＝0.1:10 | 0.23 | - | 108.70 | 65.35 | 166.34 |
| Test 10 | A:B＝0.2:10 | 0.18 | - | 138.89 | 87.73 | 158.32 |
| Test 11 | A:B＝0.3:10 | 0.17 | - | 147.06 | 95.24 | 154.41 |
| Test 12 | A:B＝0.5:10 | 0.24 | - | 104.17 | 72.76 | 143.17 |
| Test 13 | A:B＝0.7:10 | 0.33 | - | 75.76 | 58.53 | 129.44 |
| Test 14 | A:B＝1.0:10 | 0.65 | - | 17.66 | 15.47 | 114.16 |
As shown in Table 1, when the compound mass ratio of the hydroprene to the spinetoram is 0.1:15-0.7:10, the co-toxicity coefficients are all greater than 120, and the synergistic effect is shown; the biggest co-toxicity coefficient is 166.34 when the compound mass ratio of the hydroprene to the spinetoram is 0.1:10, which indicates that the synergistic effect is optimal.
Example 3
The present example provides a field test of agricultural pesticides.
1. Field test of agricultural pesticide on preventing and controlling cnaphalocrocis medinalis
The compound mass ratio of the dipropyl cyclic ester and the spinetoram screened out according to an indoor toxicity test is 0.1:15-0.7:10, and further the rice leaf rollers on rice are used as control objects, and a field pesticide effect test is carried out on the agricultural pesticide compounded by the dipropyl cyclic ester and the spinetoram. The preparation type used in this example is suspending agent, the preparation method is as described in example 1, the suspending agent is diluted 5000 times and used, and the application amount is 50 kg/mu.
The test involved 16 treatments in total, test 15: the mass ratio of the dicycloprid to the spinetoram is 0.1:15; test 16: the mass ratio of the dicycloprid to the spinetoram is 0.1:13; test 17: the mass ratio of the dicycloprid to the spinetoram is 0.1:12; test 18: the mass ratio of the dicycloprid to the spinetoram is 0.1:11; test 19: the mass ratio of the dicycloprid to the spinetoram is 0.1:10; test 20: the mass ratio of the dicycloprid to the spinetoram is 0.2:10; test 21: the mass ratio of the dicycloprid to the spinetoram is 0.3:10; test 22: the mass ratio of the dicycloprid to the spinetoram is 0.5:10; test 23: the mass ratio of the dicycloprid to the spinetoram is 0.7:10; test 24: only the hydroprene is added; test 25: adding only ethyl spinosad; test 26: no insecticide is added, and the blank group is a blank control group; test 27: no alkyl polyglycoside is added; test 28: equivalent replacement of alkyl polyglycoside with tween-80; test 29: equivalent replacement of alkyl polyglycoside with OP-10; test 30: the alkyl polyglycoside is replaced by alkylphenol ethoxylates in equal amount.
Test machine-transplanted continuous cropping late rice with heavier and middle-aged larva as a certain proportion in rice leaf roller is used as a test field, the variety is Jiayou No. 2, ridges are formed before the test, cells are divided, and the area of the cells is 20m 2 4 times of repetition are carried out each time, random group arrangement is carried out, uniform spraying is carried out by adopting a knapsack sprayer, the application time is 9 middle ten days, the number of insect population is investigated by adopting a basin-beating method before application, the number of living rice leaf rollers is respectively investigated 7, 15 and 30 days after application, 5 points are sampled in each district, 3 leaves are fixed at the middle upper part of a rice plant in each point, the number of insect population of each leaf roller is investigated and recorded, and the control effect is calculated.
In the formula, PT 0 The number of insect mouths before the drug is applied to the drug treatment area; PT (PT) 1 The number of insect mouths after the drug is applied to the drug treatment area; CK (CK) 0 The number of insect mouths before the application of the drug for the blank control area; CK (CK) 1 The number of insect mouths after the administration of the drug is counted in a blank control area.
Table 2: field test results of pesticide containing dicycloprid and spinetoram on cnaphalocrocis medinalis
As shown in Table 2, the pesticide containing the dicycloprid and the spinetoram has higher control effect on cnaphalocrocis medinalis after 15d of application, which is 87.64-98.51%, and is higher than 65.46% and 77.81% of control effect when used singly, which indicates that the control effect on cnaphalocrocis medinalis is improved when the dicycloprid and the spinetoram are compounded for use. Under the condition that the same effective dosages of the dicycloprid and the spinetoram are applied, the addition of different surfactants has different control effects on the pesticide, the control effect of the agricultural pesticide added with the alkyl polyglycoside on the cnaphalocrocis medinalis is higher than that of a test group added with tween-80 or OP-10 or alkylphenol ethoxylate, and the control effect of a treatment group added with the surfactant is better than that of a treatment group without the addition group, so that the agricultural pesticide added with the alkyl polyglycoside provided by the invention has better control effect.
2. Field test of agricultural pesticide on preventing and controlling cnaphalocrocis medinalis
The compound mass ratio of the dicycloprid to the spinetoram screened out according to an indoor toxicity test is 0.1:15-0.7:10, thrips on cowpea are further used as control objects, and a field pesticide effect test is carried out on the agricultural pesticide compounded by the dicycloprid and the spinetoram. The preparation type used in this example is suspending agent, the preparation method is as described in example 1, the suspending agent is diluted 5000 times and used, and the application amount is 50 kg/mu.
The test involved 16 treatments in total, test 31: the mass ratio of the dicycloprid to the spinetoram is 0.1:15; test 32: the mass ratio of the dicycloprid to the spinetoram is 0.1:13; test 33: the mass ratio of the dicycloprid to the spinetoram is 0.1:12; test 34: the mass ratio of the dicycloprid to the spinetoram is 0.1:11; test 35: the mass ratio of the dicycloprid to the spinetoram is 0.1:10; test 36: the mass ratio of the dicycloprid to the spinetoram is 0.2:10; test 37: the mass ratio of the dicycloprid to the spinetoram is 0.3:10; test 38: the mass ratio of the dicycloprid to the spinetoram is 0.5:10; test 39: the mass ratio of the dicycloprid to the spinetoram is 0.7:10; test 40: only the hydroprene is added; test 41: adding only ethyl spinosad; test 42: no insecticide is added, and the blank group is a blank control group; test 43: no alkyl polyglycoside is added; test 44: equivalent replacement of alkyl polyglycoside with tween-80; test 45: equivalent replacement of alkyl polyglycoside with OP-10; test 46: the alkyl polyglycoside is replaced by alkylphenol ethoxylates in equal amount.
Test cowpea area with heavy thrips is used as test field, cowpea variety is number 1, and cell area is 20m 2 Every 4 times of treatment, the random granule is arranged, and a protection row is arranged, and the method adoptsThe knapsack sprayer and cowpea are uniformly sprayed in full bloom stage, more than 30 flowers are randomly selected from the upper, middle and lower parts of each district, the number of thrips living insects is respectively investigated before and after the application of the pesticide for 3, 5 and 7 days, and the control effect is calculated.
In the formula, PT 0 The number of insect mouths before the drug is applied to the drug treatment area; PT (PT) 1 The number of insect mouths after the drug is applied to the drug treatment area; CK (CK) 0 The number of insect mouths before the application of the drug for the blank control area; CK (CK) 1 The number of insect mouths after the administration of the drug is counted in a blank control area.
Table 3: results of field test of pesticide containing hydroprene and spinetoram on thrips
As shown in Table 3, the pesticide containing the dicycloprid and the spinetoram has a higher control effect on thrips in 3d after application of the pesticide, which is 90.48-98.24 percent higher than that of 38.26-84.45 percent when used singly, and shows that the control effect on thrips is improved when the dicycloprid and the spinetoram are compounded for use. Under the condition that the same effective dosages of the dicycloprid and the spinetoram are applied, the addition of different surfactants has different control effects on the pesticide, the control effect of the agricultural pesticide added with the alkyl polyglycoside on the cnaphalocrocis medinalis is higher than that of a test group added with tween-80 or OP-10 or alkylphenol ethoxylate, and the control effect of a treatment group added with the surfactant is better than that of a treatment group without the addition group, so that the agricultural pesticide added with the alkyl polyglycoside provided by the invention has better control effect.
The embodiments described above are some, but not all, embodiments of the invention. The detailed description of the embodiments of the invention is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments obtained without inventive effort by a person skilled in the art, which are related deductions and substitutions made by the person skilled in the art under the condition of the inventive concept, are within the scope of protection of the present invention.
Claims (6)
1. An agricultural pesticide is characterized by consisting of dicycloprid and spinetoram;
the mass ratio of the dicycloprid to the spinetoram is 0.1:25-1.0:10.
2. The agricultural insecticide according to claim 1, wherein the mass ratio of the dicycloprid to the spinetoram is 0.1:15 to 0.7:10.
3. The agricultural insecticide according to claim 2, wherein the mass ratio of the dicycloprid to the spinetoram is 0.1:10.
4. The agricultural insecticide according to claim 1, wherein the agricultural insecticide further comprises alkyl polyglycoside, wherein the addition amount of the alkyl polyglycoside is 5% by mass percent.
5. Use of the agricultural insecticide according to any one of claims 1 to 4 for controlling lepidoptera pests, homoptera pests and thysanoptera pests.
6. The use according to claim 5, wherein the lepidopteran pest comprises cnaphalocrocis medinalis; the homopteran pests include tomato bemisia tabaci; the thysanoptera pests include thrips.
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