Botanical insecticide composition containing 2-tridecanone and saccharomyces alhagi and application of botanical insecticide composition

Abstract

The invention relates to a botanical insecticidal composition containing 2-tridecanone and Saccharomyces alhagi and application of the botanical insecticidal composition. The botanical insecticidal composition is prepared from 2-tridecanone and Saccharomyces alhagi in a mass ratio of (1: 10)-(3: 1). According to the botanical insecticidal composition provided by the invention, a synergistic interaction effect can be achieved after the 2-tridecanone and the saccharomyces alhagi are mixed according to a specific mass ratio through a large number of experimental research screening, and the botanical insecticidal composition has a better insecticidal effect under the same dosage, so that the compounded composition has relatively high effective activity, and the application prospect is broad. The insecticidal composition can effectively prevent generation of pest resistance or delay the resistance speed, and is lower in cost and smaller in environmental influence. The botanical insecticidal composition provided by the invention has obvious prevention and treatment effects on multiple important lepidoptera pests such as armyworms, plutella xylostella, beet armyworms, cotton bollworms, cabbage caterpillars, prodenia litura and the like.

Description

Technical Field

[0001] The invention belongs to the field of biological pesticides, and particularly relates to an insecticide composition containing 2-tridecanone and spinosadactyl and application thereof. Background Art

[0002] Lepidoptera pests are a type of holometabolous insects. Their development goes through four stages: egg, larva, pupa and adult. There are many species, with about 200,000 known species worldwide and more than 8,000 known species in China. They are the second largest order in the class Insecta, second only to Coleoptera. They are distributed all over the world, with the most abundant species in the tropics. Most species of larvae harm all kinds of cultivated plants. Larger ones often eat all the leaves or bore into branches and trunks, while smaller ones often roll leaves, attach leaves, form sheaths, spin silk webs or drill into plant tissues to feed. Before the third instar, they have a small appetite and live in groups. After the third instar, they enter the gluttonous stage and their appetite increases greatly. In severe cases, they often eat all the stems and leaves of plants. Important Lepidoptera pests include armyworms, diamondback moths, beet armyworms, cotton bollworms, cabbage worms, and Spodoptera litura.

[0003] 2-Tridecanone, also known as methyl undecyl ketone, is a plant volatile found in the sixth type of glandular hairs on the leaves and stems of wild tomatoes Lycopersiconhirsutum. It plays an important role in plants, including as a defense chemical, a signaling chemical, and a natural insecticide. Spinosporin is a secondary metabolite produced by the soil actinomycete Saccharopolyspora spinosa. Its main active ingredients are spininosporin A component (about 85% to 90%) and spininosporin D component (10% to 15%). It acts on the nervous system of insects, causing non-functional muscle contraction, exhaustion, accompanied by tremors and paralysis. It has the characteristics of low toxicity, low residue, and safety to natural enemies. It has the best control effect on lepidopteran pests. Compared with general pesticides, spininosporin has both the safety of biological pesticides and the rapid effect of chemical synthetic pesticides.

[0004] On the basis of the prior art, the present invention screens out a synergistic insecticide combination of 2-tridecanone and spinosadactyl, which can not only improve the stability and control effect of botanical insecticides, but also reduce the amount of insecticides used, delay the development of drug resistance, and reduce environmental pollution, thereby having significant economic benefits and environmental protection significance. Summary of the invention

[0005] In order to solve the problems existing in the background technology, the present invention provides a botanical insecticide composition containing 2-tridecanone and spinosadactyl and its application.

[0006] To achieve the purpose of the present invention, the present invention adopts the following technical solution:

[0007] The invention provides a compound insecticide composition, which consists of 2-tridecanone and spinosadactyl.

[0008] Optionally, the mass ratio of the 2-tridecanone to the spinosadactyl is 1:10 to 3:1.

[0009] Preferably, the mass ratio of 2-tridecanone to spinosadactyl is 1:5 to 2:1.

[0010] Furthermore, the present invention provides use of the insecticidal composition as described above in controlling lepidopteran pests.

[0011] The present invention also provides a compound insecticide, which is composed of the insecticide composition described in any one of the above technical solutions and auxiliary materials acceptable to pesticide preparations, and the mass percentage of the insecticide composition in the insecticide is 11% to 40%.

[0012] Preferably, the mass percentage of the insecticide composition to the insecticide is 12% to 30%.

[0013] The present invention provides a compound insecticidal composition, which is composed of 2-tridecanone and spiny glycosaminoglycan. Compared with the prior art, in the insecticidal composition provided by the present invention, 2-tridecanone and spiny glycosaminoglycan are used as the main active ingredients, and the compounding of the two has a complementary effect and a synergistic effect, so that the compounded composition has a higher effective activity. At the same dose, the botanical insecticidal composition obtained by compounding the present invention has a more superior insecticidal effect than the single 2-tridecanone and spiny glycosaminoglycan, so the use concentration of the compound insecticidal composition can be greatly reduced, and the cost is lower; at the same time, the active ingredients are all plant extracts, which are easy to degrade and have less environmental pollution. DETAILED DESCRIPTION

[0014] All raw materials of the present invention have no particular limitation on their sources, and can be purchased from the market or prepared according to conventional methods known to those skilled in the art.

[0015] The insecticide composition described in any one of the above technical solutions provided by the present invention has no special restrictions on preventing and controlling lepidopteran pests, and has good prevention effects on various lepidopteran pests.

[0016] The present invention also provides a compound insecticide, which is composed of the insecticide composition described in any one of the above technical solutions and auxiliary materials acceptable to pesticide preparations.

[0017] The insecticide composition of the present invention can be compounded into the above-mentioned various dosage forms by those skilled in the art according to the known method by adding appropriate auxiliary materials. The preferred dosage form of the present invention is a suspension.

[0018] The auxiliary material of the present invention is preferably one or more of a dispersant, a thickener, a stabilizer, a defoamer, a preservative, a wetting agent, an antifreeze agent and a pH adjuster.

[0019] The insecticide composition provided by the present invention has a special effect on a variety of lepidopteran pests. The following uses the armyworm as an example to illustrate its control effect through field control of armyworms. 2-tridecanone and spiny saccharin single agent are used as controls, and the application amount is 27g.ai / hm 2 The compounded agent is configured according to the following 1 to 6 embodiments, and the field application dosage is 27g.ai / hm in terms of spiny glycosylation. 2 The application was carried out in the corn field on a windless and rainless day. There was no rainfall during the entire investigation period. The interval between each application was 7 days, and the application was carried out twice. The number of armyworms was investigated 3 days, 7 days, and 21 days after the last application, and the control effect was calculated. The control effect was calculated according to the following formula:

[0020]

[0021] Where: T a is the number of individuals surviving after control in the treatment area; T b is the number of individuals surviving in the treatment area before control; C a is the number of individuals surviving after control in the control area; C b is the number of individuals surviving in the control area before control.

[0022] Example 1

[0023] The raw materials are calculated by weight: 1 part of 2-tridecanone, 10 parts of spiny glycosides, 2 parts of propylene glycol, 5 parts of potassium lignin sulfonate, 37 parts of Ningru # 5 parts, polycarboxylate 4 parts, deionized water 73 parts. The above raw materials are prepared into agricultural insecticide suspension according to conventional preparation process, and the present invention is diluted to 2000 times when applied.

[0024] Example 2

[0025] The raw materials are calculated by weight: 2 parts of 2-tridecanone, 10 parts of spiny glycosides, 2 parts of propylene glycol, 5 parts of potassium lignin sulfonate, 37 parts of Ningru # 5 parts, polycarboxylate 4 parts, deionized water 72 parts. The above raw materials are prepared into agricultural insecticide suspension according to conventional preparation process, and the present invention is diluted to 2000 times when applied.

[0026] Example 3

[0027] The raw materials are calculated by weight: 5 parts of 2-tridecanone, 10 parts of spiny glycosides, 3 parts of propylene glycol, 5 parts of potassium lignin sulfonate, 37 parts of Ningru # 5 parts, polycarboxylate 4 parts, deionized water 68 parts. The above raw materials are prepared into agricultural insecticide suspension according to conventional preparation process, and the present invention is diluted to 2000 times when applied.

[0028] Example 4

[0029] The raw materials are calculated by weight: 10 parts of 2-tridecanone, 10 parts of spiny glycosides, 4 parts of propylene glycol, 4 parts of potassium lignin sulfonate, 37 parts of Ningru # 5 parts, polycarboxylate 4 parts, deionized water 63 parts. The above raw materials are prepared into agricultural insecticide suspension according to conventional preparation process, and the present invention is diluted to 2000 times when applied.

[0030] Example 5

[0031] The raw materials are calculated by weight: 20 parts of 2-tridecanone, 10 parts of spiny glycosides, 6 parts of propylene glycol, 5 parts of potassium lignin sulfonate, 37 parts of Ningru # 5 parts, polycarboxylate 5 parts, deionized water 49 parts. The above raw materials are prepared into agricultural insecticide suspension according to conventional preparation process, and the present invention is diluted to 2000 times when applied.

[0032] Example 6

[0033] The raw materials are calculated by weight: 30 parts of 2-tridecanone, 10 parts of spiny glycosides, 6 parts of propylene glycol, 5 parts of potassium lignin sulfonate, 37 parts of Ningru # 5 parts, polycarboxylate 5 parts, deionized water 39 parts. The above raw materials are prepared into agricultural insecticide suspension according to conventional preparation process, and the present invention is diluted to 2000 times when applied.

[0034] The test results are as follows:

[0035] Table 1 Control effect of 2-tridecanone and spiny saccharin combination on armyworm

[0036]

[0037]

[0038] It can be seen from Table 1 that the combination of 2-tridecanone and spiny glycosylation can effectively prevent and control armyworms, and has a significant synergistic effect, and the synergistic effect is particularly significant at 1:5 to 2:1. The control effects of formulas 1 to 6 are better than those of the control agents, with a long lasting effect, and the control effect reaches more than 85% 21 days after the last application of the medicine. Among them, the control effect of formula 3 reached 95.34% 21 days after the last application of the medicine, and within the range of the experimental medication, there was no phytotoxicity to the target crops. Therefore, the 2-tridecanone and spiny glycosylation botanical insecticide composition provided by the present invention has good control effect and sustainability on armyworms in the field.

[0039] Finally, it should be noted that the above content has been described in detail for a composite insecticide composition, its preparation and application provided by the present invention. The principle and implementation of the present invention are explained through specific embodiments, and the description of these embodiments is intended to help better understand the method of the present invention and its core idea. It should be pointed out that those of ordinary skill in the art can make certain improvements and modifications to it without departing from the principle of the present invention, and these improvements and modifications also belong to the protection scope of the claims of the present invention.

Claims

1. The present invention discloses an insecticidal composition for lepidopteran pests, characterized in that The mass ratio of the 2-tridecanone to the spinosadactyl is 1:10 to 3:

1.

2. The insecticidal composition according to claim 1, wherein the mass ratio of 2-tridecanone to spiny saccharin is 1:5 to 2:1, and has a better protective effect against Lepidoptera larvae.

3. The insecticidal composition according to claim 1 needs to add auxiliary materials to prepare a suspension concentrate or other dosage forms when used, wherein the control effect is best when the content of 2-tridecanone and spinytosaccharin in the preparation is 12% to 30%.

4. The lepidopteran pests according to claim 1 include, but are not limited to, various important agricultural and forestry pests such as armyworm, diamondback moth, beet armyworm, cotton bollworm, cabbage looper, and Spodoptera litura.

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