CN107593714B

CN107593714B - Weeding composition containing chloropyridyl ester and triazine compound and application thereof

Info

Publication number: CN107593714B
Application number: CN201711041767.9A
Authority: CN
Inventors: 王晓璐
Original assignee: Qingdao Haizhiyu Information Technology Co ltd
Current assignee: Harbin Huifeng Biological Agrochemical Co ltd
Priority date: 2017-10-31
Filing date: 2017-10-31
Publication date: 2020-07-28
Anticipated expiration: 2037-10-31
Also published as: CN107593714A

Abstract

The invention belongs to the field of pesticides, and particularly relates to a weeding composition containing chloropyridyl ester and triazine compounds and application thereof. The weeding composition comprises an active ingredient fluroxypyridine ester with an effective weeding amount and a triazine compound, wherein the triazine compound is terbuthylazine and/or prometryn. The composition can effectively prevent and kill weeds such as chickweed and descurainia sophia in wheat fields, can produce synergistic effect and expand weed control spectrum.

Description

Weeding composition containing chloropyridyl ester and triazine compound and application thereof

Technical Field

The invention belongs to the field of pesticides, and particularly relates to a weeding composition containing chloropyridyl ester and triazine compounds and application thereof.

Background

The herbicide is a common measure for weed control in the wheat field at present, has important effects on promoting the improvement of the wheat yield and saving the planting cost, but easily causes the problems of weed resistance, phytotoxicity and the like by continuously using a single variety or a single action mode of chemical herbicide for a long time at a high dose.

The chemical structural formula of the fluopicolide ester is shown as

The herbicide is a recently developed herbicide for cereal fields in Dow Yinong, and can be used for preventing and removing broadleaf weeds on various crops.

Prometryn is a systemic selective herbicide, can be absorbed and conducted by roots and leaves, has the best control effect on just-germinated weeds, has a wide weed control spectrum, and can prevent and kill annual gramineous weeds and broadleaf weeds.

Terbuthylazine belongs to triazine herbicides, is mainly absorbed by roots of plants and is used for preventing and removing most weeds.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a weeding composition containing chlorofluoropyridine ester and triazine compounds and application thereof. The composition can effectively prevent and kill weeds such as chickweed and descurainia sophia in wheat fields, can produce synergistic effect and expand weed control spectrum.

The technical scheme adopted by the invention is as follows:

a weeding composition containing fluroxypyridine ester and triazine compounds comprises effective weeding amount of active ingredients of the fluroxypyridine ester and the triazine compounds, and the triazine compounds are terbuthylazine and/or prometryn.

The weight ratio of the chlorofluoropyridine ester to the triazine compound is 1:10-10:1, preferably 1:5-5: 1.

The mass percentage of the fluroxypyridine ester and the triazine compound in the weeding composition accounts for 10-80% of the total amount.

The weeding composition also comprises common pesticide auxiliary agents, such as a surfactant, a carrier and the like.

The specific preparation of the weeding composition is water suspending agent, dispersible oil suspending agent, suspoemulsion, aqueous emulsion, wettable powder, water dispersible granule, missible oil or microemulsion.

The carrier is one or more of water, organic solvent or filler, such as pottery clay, bentonite, kaolin, alcohols, ketones, etc.

The surfactant may be selected from one or more of an emulsifier, a penetrant, a dispersant, an antifreeze, or a wetting agent.

In summary, the compositions of the present invention may be mixed with conventional adjuvants of the prior art.

The weeding composition containing the halauxifen-methyl and the triazine compound is applied to control of harmful weeds in crops, such as broad-leaf weeds in wheat fields, such as chickweed and descurainia sophia, and can be applied by spraying.

The herbicidal composition of the present invention has the following advantages:

the herbicidal composition combines the fluroxypyr meptyl and the triazine compound, produces unexpected technical effects, and expands the herbicidal spectrum.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

(1) Examples of the embodiments

Example 125% Fluoropyridate + terbuthylazine dispersible oil suspension (1: 4)

5% of fluroxypyridine ester, 20% of terbuthylazine, 3% of sodium dodecyl benzene sulfonate, 10% of fatty acid polyoxyethylene ether, 1% of organic bentonite and 200# solvent oil.

The main processing equipment comprises: mixing kettles, colloid mills, sand mills, shearing machines and the like.

The preparation method comprises the following steps: putting all the materials into a mixing kettle, stirring and mixing the materials, grinding the materials by a colloid mill, then sanding the materials by a sand mill, and finally uniformly shearing the materials in a shearing machine to obtain the product.

Example 230% Fluroxypyridyl ester + prometryn dispersible oil suspension (1: 5)

5 percent of fluroxypyridine ester, 25 percent of prometryn, 5 percent of agricultural emulsion BY-125, 10 percent of polycarboxylate, 2 percent of organic bentonite and 100# solvent oil.

The preparation method is the same as that of example 1, and thus, the description is omitted.

EXAMPLE 320% Chlorofluoropyridine ester + terbuthylazine wettable powder (1: 1)

10% of fluroxypyridine ester, 10% of terbuthylazine, 8% of naphthalenesulfonate dispersant, 5% of sodium dodecyl sulfate, 20% of white carbon black and diatomite

The main processing equipment comprises: mechanical disintegrator, jet mill.

The preparation method comprises the following steps: putting all the materials into a mechanical crusher, and then passing through an airflow crusher to obtain the product.

EXAMPLE 415% Chlorpyriproxyfen + prometryn wettable powder (1: 2)

5% of fluroxypyridine ester, 10% of terbuthylazine, 3% of sodium lauryl sulfate, 5% of calcium lignosulfonate, 10% of white carbon black and kaolin

The preparation method is the same as that of example 3, and thus, the description thereof is omitted.

(2) Indoor biological activity determination:

the weeding effects of the fluroxypyr meptyl, terbuthylazine, prometryn and combinations in different proportions are measured under the greenhouse cultivation condition, and the combined action is evaluated by adopting a Gowing method.

Test targets: chickweed and descurainia sophia.

95% of chloropyridyl ester, 95% of terbuthylazine and 95% of prometryn are all diluted by using 0.1% of emulsifier Tween 80 aqueous solution as a solvent and are diluted as required.

A potted stem and leaf treatment method (NY/T1155.4-2006) is adopted, a certain amount of soil is filled in a 180 х 140mm plastic pot body, the weed seeds to be tested are sown in the soil, then 0.5-1cm of soil is covered according to the particle size of the seeds and is placed in a greenhouse for culturing, stem and leaf spraying treatment is carried out when the weeds are in a 3-4 leaf period, 2m L of liquid medicine is carried out on each pot body for 3 times, the treated seeds are moved into the greenhouse for conventional culture after treatment, a 1-2cm water layer is always kept during the test period, the growth condition of the target weeds is regularly observed, investigation is carried out 20 days after treatment, an absolute log investigation method is adopted, the whole seedling of the surviving weeds is cut off along the soil surface by a blade.

The theoretical fresh weight inhibition (E0 = X + Y-X Y/100) of each treatment combination was calculated by the Gowing method and the type of combined action on weeds was evaluated in comparison with the observed inhibition (E).

Wherein X is the fresh weight inhibition rate when the dosage of the active component A is P; y is the fresh weight inhibition rate of the active component B when the dosage is Q.

Evaluation criteria: when the E-E0 value is more than 10 percent, the synergistic effect is obtained, when the E-E0 value is less than-10 percent, the antagonistic effect is obtained, and when the E-E0 value is between-10 percent and 10 percent, the addition effect is obtained. And the optimal proportion is determined according to factors such as actual control effect, characteristics of the herbicide, balance of the formula and the like.

The results of the combined effect evaluation are shown in the following table:

TABLE 1 results of evaluation of the combination of Clinopyridyl and terbuthylazine

TABLE 2 evaluation results of the combination of fluroxypyr meptyl and prometryn

(3) Demonstration of field

In 2016, the herbicidal compositions obtained in examples 1 to 4 were used in a test for controlling weeds in wheat fields in the suburb, Qingdao, Shandong province.

The application method comprises the following steps of wheat in the 3-5 leaf period and weeds in the 3-4 leaf period, uniformly spraying stems and leaves by using a manual sprayer, adding water 30L into each mu of the wheat, and investigating and controlling effects 20 days after application, wherein the table 3 shows the effects.

Weed number in clear water control area-weed number in medicament treatment area
	Number of weeds in clear water control zone

Control effect (%) =

TABLE 3 exemplary Effect of the fields

From the above, the composition has good control effects on the wheat Galium aparine, chickweed, abutilon, descurainia sophia, alopecurus amurensis and the like, is superior to single-agent control effects, is safe to wheat, and has good application prospects.

Claims

1. The weeding composition containing the fluroxypyridine ester and the triazine compound is characterized by comprising effective weeding amount of active ingredients of the fluroxypyridine ester and the triazine compound, wherein the triazine compound is prometryn, and the weight ratio of the fluroxypyridine ester to the triazine compound is 1: 1-10: 1.

2. The herbicidal composition containing the chlorofluoropyridyl ester and the triazine compound as claimed in claim 1, wherein the weight ratio of the chlorofluoropyridyl ester to the triazine compound is 1: 1-5: 1.

3. The weeding composition containing the fluroxypyridine ester and the triazine compounds as claimed in claim 1 or 2, wherein the mass percentage of the fluroxypyridine ester and the triazine compounds in the weeding composition accounts for 10-80% of the total amount.

4. The weeding composition containing the chlorofluoropyridine ester and the triazine compound according to claim 1 or 2, wherein the weeding composition further comprises a conventional pesticide adjuvant.

5. The weeding composition containing the fluroxypyridine ester and the triazine compound as claimed in claim 1 or 2, wherein the concrete formulation of the weeding composition is water suspension, dispersible oil suspension, suspoemulsion, aqueous emulsion, wettable powder, water dispersible granule, missible oil or microemulsion.

6. Use of a herbicidal composition comprising a chlorofluoropyridinate and a triazine according to any one of claims 1 to 5 for controlling harmful weeds in crops of plants.