CN1631142A - Superior cornfield haulm herbicide - Google Patents

Abstract

The invention relates to four kinds of haulm herbicide composition for wheat field weeding, i.e. fenoxaprop-P-ethyl and tribenuron-methly weeding composition, fenoxaprop-P-ethyl and carfentrazone-ethyl weeding composition, fenoxaprop-P-ethyl and 2,4-D butylate weeding composition, fenoxaprop-P-ethyl and MCPA-sodium weeding composition. The four kinds of weeding compositions provided by the invention can eradicate various weeds in the wheat field, and has the advantages of good safety and targeting performance.

Description

Good cornfield haulm herbicide

The invention belongs to the agricultural herbicide field.

Along with the development of agricultural cience and farming techniques, chemical herbicide has become one of effective measure of agricultural produce with its saving of work and time, the characteristics of not damaging crops.China is large agricultural country, cornfield herbicidal several years ago mainly contains nitrofen, Acetochlor, chlortoluron, 2, kinds such as 4-D, methoxone, isoproturon, these kinds or since herbicidal effect poor or since consumption big, cost is high, grand by the green sulphur of sulfonylurea herbicide in recent years, metsulfuron-methyl, tribenuron-methyl replace, see " external new varieties of pesticides handbook (Sha Jiajun, Zhang Minheng, Jiang Yajun, Chemical Industry Press), 1992.10.Green sulphur is grand, the metsulfuron-methyl weed killer herbicide has active high, few, the low cost and other advantages of consumption, but they still have relatively outstanding weak point: it is long that green sulphur swells in scholar's earth residual life, influence to succession crop is fairly obvious, particularly wheat-cotton crop rotation district, wheat-soybean crop rotation district, wheat-corn crop rotation district, wheat-beet crop rotation district easily cause poisoning to second stubble crop to the north of China the Changjiang river, even also easily a following batch paddy rice is caused poisoning in southern rice producing region; Metsulfuron-methyl belongs to the super-active weed killer herbicide, and every mu only needs medication 0.5 gram, can effectively prevent and kill off the multiple weeds of wheatland, but owing to high sensitive of plant and the phytotoxicity accident that causes than the long longevity of residure are also happened occasionally; Tribenuron-methyl is the cornfield herbicidal of comparison safety, applied rapidly in recent years, but since only effective to broad leaved weed, along with use year after year, made the grass of weeds in the wheatland that obvious variation has taken place mutually.Therefore, the complex weedicide that is used for cornfield herbicidal more in recent years arises at the historic moment, but above problem still can not be well solved.

The objective of the invention is to seek a kind of novel wheat field herbicide composition that can overcome above-mentioned defective, both had the advantage that activity is high, consumption is few, cost is low, have careless wide spectrum, good, the tangible characteristics of synergistic effect of safety of killing again, to remedy the deficiency of wheatland weed killer herbicide commonly used, provide available cornfield herbicidal conscientiously for the northern China farmland simultaneously.

Fenoxaprop is good foliar herbicide, and grassy weed is had special efficacy, can be widely used in the field weeding of crops such as paddy rice, wheat, rape, soybean.But fatal weakness is invalid to the field broad leaved weed, therefore the harm of all weeds of the uncontrollable field of Shi Yong fenoxaprop separately.

The present invention is by compound (I) fenoxaprop and compound (II) tribenuron-methyl, or compound (I) fenoxaprop and compound (III) carfentrazoneethyl, or compound (I) fenoxaprop and compound (IV) 2, the 4-d butyl ester, or compound (I) fenoxaprop and compound (V) 2 first 4 chlorine sodium salts combinations is mixed and realizes.

The structural formula of compound (I), (II), (III), (IV), (V) is as follows:

Compound (I): fenoxaprop

Compound (II): tribenuron-methyl

Compound (III): carfentrazoneethyl

Compound (IV): 2, the 4-d butyl ester

Compound (V): 2 first, 4 chlorine sodium salts

Wherein compound (part by weight of I) fenoxaprop and compound (II) tribenuron-methyl is 10: 0.1-50,

Compound (part by weight of I) fenoxaprop and compound (III) carfentrazoneethyl is 10: 0.5-50,

Compound (I) fenoxaprop and compound (IV) 2, the part by weight of 4-d butyl ester are 5: 1-100,

Compound (part by weight of I) fenoxaprop and compound (V) 2 first 4 chlorine sodium salts is 1: 1-100,

Advantage of the present invention is that significantly it mainly shows:

1, cauline leaf of the present invention is handled Herbicidal combinations, no any antagonism between each composition, and synergistic effect is remarkable.

2, to be key component be processed into various formulations according to various formulations of pesticide processing methods carries out field weeding when using with two kinds of compounds according to the present invention, and the one, the agent of amount ratio list is used and is significantly reduced, and has reduced cost, can reduce farmer's burdens; The 2nd, to use conveniently than existing mixing now, drug effect is better.

3, Herbicidal combinations of the present invention compares with using single effective ingredient separately, has enlarged to kill the grass spectrum, and a weeding can be saved from damage season, and herbicidal effect is better.

4, Herbicidal combinations of the present invention belongs to cauline leaf and handles weed killer herbicide, sees grass back dispenser, and medicine removes to grass, has overcome the blindly defective of dispenser of soil processing herbicide, can be the peasant and reduces unnecessary medication expenditure.

5, Herbicidal combinations low toxicity of the present invention to people, animal, birds and beneficial organism safety, helps keeping ecological balance.

6, the production technology of Herbicidal combinations of the present invention is to adopt physical method processing, no coupling product in the production process, and three-waste free discharge has no adverse effects to ecotope.

7, energy consumption is low in the Herbicidal combinations production process of the present invention, and energy-saving effect is remarkable.

8, Herbicidal combinations application method of the present invention is flexible, and the operating period is wide, is convenient to promote.

Following the present invention is described in detail in conjunction with specific embodiments, so that advantage of the present invention is more obvious.

Embodiment 1 water dispersible granules [each component is (weight)]

40 parts of fenoxaprops

10 parts of tribenuron-methyls

5 parts of diffusion agent Ns

3 parts of K-12

5 parts of OP-10

5 parts of stabilizing agent W

5 parts of disintegrant B

10 parts of safeners

2 parts in sodium sulphate

15 parts of white carbon blacks

Embodiment 2 missible oil [each component is (weight)]

10 parts of fenoxaprops

5 parts of carfentrazoneethyls

10 parts of emulsifier

5 parts of stabilizing agents

3 parts of antifreezes

10 parts of safeners

57 parts of solvents

Embodiment 3 microemulsions { each component is (weight) }

5 parts of fenoxaprops

2,25 parts of 4-d butyl esters

3 parts of cosolvents

12 parts of emulsifier

2 parts of stabilizing agents

2 parts of antifreezes

1 part of defoamer

10 parts of safeners

40 parts in water

Embodiment 4 aqueous emulsions [each component is (weight)]

5 parts of fenoxaprops

45 parts of 2 first, 4 chlorine sodium salts

3 parts of cosolvents

2 parts of emulsifier

1 part of stabilizing agent

3 parts of dispersants

1 part of antifreeze

1 part of defoamer

10 parts of co-emulsifiers

10 parts of safeners

19 parts in water

Embodiment 5 compounds (I) see Table 1 with the herbicidal effect of compound (II) and composition thereof

Table 1 compound (I) contrasts with the herbicidal effect of compound (II) and composition thereof

Handle	Amount of application gram effective ingredient/mu	Prevent and kill off or poisoning
									Amur foxtail	Wild oat	The barnyard grass grass	Denticulate ixeris herb	Knotweed	Lamb's-quarters	Wheat
		Compound (I)	???5.0	??9	??9	????9	??0	????0								????0	????1
Compound (II)	???2.0								??0	??0	????0	??9	????9	????9	????0
		Compound (I)+compound (II)	???4.0+1.0	??9	??9	????9	??9	????9								????9	????0

Annotate: investigation in 30 days behind the medicine, drug effect are with the 0-9 classification, and 9 expressions are prevented and kill off fully or be dead, not damage of 0 expression.

Embodiment 6 compounds (I) see Table 2 with the herbicidal effect of compound (III) and composition thereof

Table 2 compound (I) contrasts with the herbicidal effect of compound (III) and composition thereof

Handle	Amount of application gram effective ingredient/mu	Prevent and kill off or poisoning
									Amur foxtail	Wild oat	The barnyard grass grass	Chickweed	Benbie	Corn gromwell	Wheat
		Compound (I)	??5.0	??9	??9	????9	????0	??0								??0	????0
Compound (III)	??3.0								??0	??0	????0	????9	??8	??8	????0
		Compound (I)+compound (III)	??3.0+1.5	??9	??8	????7	????9	??8								??8	????0
Compound (I)+compound (III)	??4.0+2.0								??9	??9	????9	????9	??9	??9	????0

Annotate: investigation in 30 days behind the medicine, drug effect are with the 0-9 classification, and 9 expressions are prevented and kill off fully or be dead, not damage of 0 expression.

Embodiment 7 compounds (I) see Table 3 with the herbicidal effect of compound (IV) and composition thereof

Table 3 compound (I) contrasts with the herbicidal effect of compound (IV) and composition thereof

Handle	Amount of application gram effective ingredient/mu	Prevent and kill off or poisoning
									Amur foxtail	Wild oat	The barnyard grass grass	Descurainia sophia (l.) webb ex prantl	Clearvers	Siberian cocklebur	Wheat
		Compound (I)	??5.0	??9	??9	????9	????0	????0								????0	????0
Compound (IV)	??30.0								??0	??0	????0	????9	????8	????8	????0
		Compound (I)+compound (IV)	??4.0+20.0	??8	??8	????8	????9	????9								????9	????0
Compound (I)+compound (IV)	??5.0+25.0								??9	??9	????9	????9	????9	????9	????0

Annotate: investigation in 30 days behind the medicine, drug effect are with the 0-9 classification, and 9 expressions are prevented and kill off fully or be dead, not damage of 0 expression.

Embodiment 8 compounds (I) see Table 4 with the herbicidal effect of compound (V) and composition thereof

Table 4 compound (I) contrasts with the herbicidal effect of compound (V) and composition thereof

Handle	Amount of application gram effective ingredient/mu	Prevent and kill off or poisoning
									Amur foxtail	Wild oat	The barnyard grass grass	Clearvers	The Tong fiber crops	The red heart lamb's-quarters	Wheat
		Compound (I)	????5.0	??9	?9	????9	??0	????0								??0	????0
Compound (V)	????60.0								??0	?0	????0	??8	????9	??8	????0
		Compound (I)+compound (V)	????4.0+35.0	??8	?8	????7	??9	????8								??8	????0
Compound (I)+compound (V)	????5.0+45.0								??9	?9	????9	??9	????9	??9	????0

Annotate: investigation in 30 days behind the medicine, drug effect are with the 0-9 classification, and 9 expressions are prevented and kill off fully or be dead, not damage of 0 expression.

Above result can show that weed killer herbicide of the present invention can be widely used in China's cornfield herbicidal.

Claims (5)

1, a kind of foliar herbicide compositions of control of weed in wheat field is characterized in that: formed wherein (I) by compound (I) and compound (II): part by weight (II) is 10: 0.1-50.

2, a kind of foliar herbicide compositions of control of weed in wheat field is characterized in that: formed wherein (I) by compound (I) and compound (III): part by weight (III) is 10: 0.5-50.

3, a kind of foliar herbicide compositions of control of weed in wheat field is characterized in that: formed wherein (I) by compound (I) and compound (IV): part by weight (IV) is 5: 1-100.

4, a kind of foliar herbicide compositions of control of weed in wheat field is characterized in that: formed wherein (I) by compound (I) and compound (V): part by weight (V) is 1: 1-100.

5, above-described four kinds of cornfield haulm herbicide compositions is characterized in that all containing safener.

The structural formula of compound (I), (II), (III), (IV), (V) is as follows:

Compound (I): fenoxaprop

Compound (II): tribenuron-methyl

Compound (III): carfentrazoneethyl

Compound (IV): 2, the 4-d butyl ester

Compound (V): 2 first, 4 chlorine sodium salts