CN1347643A

CN1347643A - New type herbicide

Info

Publication number: CN1347643A
Application number: CN 00123939
Authority: CN
Inventors: 阎新华; 高忠文; 王军妮; 马洪艳; 梁孝生; 李波
Original assignee: SHANGDONG HUAYANG SCIENCE & TECHNOLOGY Co Ltd
Current assignee: SHANGDONG HUAYANG SCIENCE & TECHNOLOGY Co Ltd
Priority date: 2000-10-11
Filing date: 2000-10-11
Publication date: 2002-05-08

Abstract

The new type recompounded wettable wheat field herbicide powder consists of tirbenuron-methyl 2-60 wt%, 2,4-D butylate 1-40 wt%, dispersant 2-20 wt%, wetter 2-20 wt% and stuffing 10-72 wt%. It has high preventing effect on wheat field weeds, and can kill several weeds, is low in cost easy to use and wide in herbicidal spectrum.

Description

New herbicides

The invention belongs to formulations of pesticide manufacture field, relate in particular to a kind of processing and application of cornfield herbicidal wetting powder.

In China, the wheat planting area is big, and the weeds kind is many, and the each department weed community is inequality, and single weed killer herbicide is difficult to that multiple weeds are all had good preventive effect.Current, the weed killer herbicide that wheatland uses is mainly tribenuron-methyl and 2, and 4-D butyl ester, tribenuron-methyl are sulfonylurea super-high-efficient weed killer herbicide, and safe to wheat, consumption is low, and multiple weeds are all had fine preventive effect, but invalid to the main weeds wartwort of some areas.2, though the 4-D butyl ester is effective to wartwort, this medicine poor stability, relatively poor to preventive effects such as drug resistance weeds such as clearvers, conical silene herb, Veronicas.For wheat weeds there being the better prevention effect, the peasant often buys two kinds of medicaments in use and now mixes existing usefulness, uses inconvenient, in recent years, though there is the people that two kinds of medicaments are carried out hybrid process, because the processing formulation is unreasonable, product quality can not get guaranteeing, can not large tracts of land promote.

Purpose of the present invention just provides a kind of good to wheatland common weed preventive effect, can disposablely kill multiple weeds, particularly effective to the main weeds wartwort, reduce the peasant and buy the now mixed existing trouble, easy to use of using of two kinds of medicaments, the control cost is low, the new herbicides that helps industrialized production of constant product quality.

The present invention realizes like this; this new herbicides; comprise two kinds of active ingredients of A and B; wherein A is a tribenuron-methyl; chemical name is a 2-[4-methoxyl group 6-methyl isophthalic acid, 3, and 5-triazine-2-base (methyl) carbamyl amino-sulfonyl] benzoic acid or basic methyl esters; other title: superstar, broad-leaved clean, Mai Huanglong, DPX-L5300, chemical structural formula is:

B is 2, the 4-D butyl ester, and chemical name: 2,4 dichloro benzene ethoxyacetic acid n-butyl, other name is called: 4,4-d butyl ester, 2,4-Dbutyl, chemical structural formula is:

Tribenuron-methyl accounts for the 2-60% of mixture gross weight in this Herbicidal compositions, 2, the 4-D butyl ester accounts for the 1-40% of mixture gross weight, comprise that also dispersant is the 2-20% that NNO accounts for the mixture gross weight, wetting agent is the 2-20% that calcium lignosulfonate accounts for the mixture gross weight, and filler is the 10-72% that kaolin or bentonite account for the mixture gross weight.

New herbicides component preferred weight proportioning of the present invention is:

Tribenuron-methyl 2%

2,4-D butyl ester 18%

Dispersant 3%

Wetting agent 5%

Filler 72%

With above-mentioned B is 2, the 4-D butyl ester adsorbs (mixing) with filler kaolin or bentonite earlier, adding A again is that tribenuron-methyl mixes with dispersant NNO, wetting agent wooden calcium sulfonate again, mixing the back pulverizes by airslide disintegrating mill, make the material average grain diameter about 15um, be processed into wetting powder, two kinds of former medicines are combined.Pack after analytical control is qualified, promptly get 1～60% A and the composition pesticide of B.

The present invention is with tribenuron-methyl and 2, and the 4-D butyl ester is a main component, main control of weed in wheat field.The wetting powder that the present invention makes, its quality reaches the unified examination criteria of country to wetting powder, moisture is less than 3%, thereby avoided the possibility of two kinds of medicament hydrolysis in the long-term storage process, the moistening time of product in 40 seconds, favorable dispersibility, in water, stir a little and can disperse fully, easy to use, resolution ratio is less than 10% after 14 days in (54 ± 2) ℃ storage, and constant product quality helps industrialized production.

Tribenuron-methyl is sulfonylurea super-high-efficient weed killer herbicide, and is safe to wheat, and consumption is low and multiple weeds are all had fine preventive effect, but invalid to the main weeds wartwort of some areas.2, though the 4-D butyl ester is effective to wartwort, this medicine poor stability, relatively poor to preventive effects such as drug resistance weeds such as pig calamity, conical silene herb, Veronicas.The present invention carries out the two composite, not only the normal weeds shepherd's purse that takes place of wheatland, descurainia sophia (l.) webb ex prantl, conical silene herb etc. there is preventive effect preferably, and malignant weed wartwort, the clearvers of the big generation in some areas also there be fine producing effect, a drug is all effective to multiple weeds, reduce the peasant and bought the now mixed used trouble of two kinds of medicaments, be convenient to the peasant and use, enlarged simultaneously and killed the grass spectrum, reduced the control cost.

The invention will be further described below in conjunction with embodiment.

Embodiment 1:

Tribenuron-methyl 2%

2,4-D butyl ester 18%

Dispersant 3%

Wetting agent 5%

Filler 72%

Press said ratio earlier 2, the 4-D butyl ester mixes with filler kaolin or bentonite, add again after tribenuron-methyl, dispersant NNO and wetting agent calcium lignosulfonate mix, material is crushed to about average grain diameter 15um, pack and get product by airslide disintegrating mill.Use 40～50g to be sprayed on wheatland every mu of this finished product, to preventive effects such as common multiple weeds shepherd's purse, Meccah public affairs, Amaranthus retroflexus, wartwort more than 95%.Its result such as following table:

Embodiment 2:

Tribenuron-methyl 10%

2,4-D butyl ester 20%

Dispersant 10%

Wetting agent 10%

Filler 50%

Method with embodiment 1 makes finished product by said ratio, uses 10～20 grams to be sprayed on wheatland every mu of this finished product, and preventive effects such as common weed shepherd's purse, descurainia sophia (l.) webb ex prantl, lamb's-quarters, wartwort are all reached more than 95%.Its result such as following table:

Embodiment 3:

Tribenuron-methyl 10%

2,4-D butyl ester 30%

Dispersant 12%

Wetting agent 15%

Filler 33%

Method with embodiment 1 makes finished product by said ratio.Use 5～10 grams to be sprayed on wheatland every mu of this finished product, to wheatland common weed preventive effect more than 98%.Its result such as following table:

Claims

1, a kind of new herbicides, it is characterized in that comprising two kinds of active ingredients of A and B, wherein A is a tribenuron-methyl, and B is 2, the 4-D butyl ester, tribenuron-methyl accounts for the 2-60% of mixture gross weight, 2, the 4-D butyl ester accounts for the 1-40% of mixture gross weight, comprises that also dispersant accounts for the 2-20% of mixture gross weight, wetting agent accounts for the 2-20% of mixture gross weight, and filler accounts for the 10-72% of mixture gross weight.

2, new herbicides according to claim 1 is characterized in that, wherein the weight proportion of each raw material is:

Tribenuron-methyl 2%

2,4-D butyl ester 18%

Dispersant 3%

Wetting agent 5%

Filler 72%