CN1568691A - Weed removal composition containing security agent - Google Patents

Abstract

The invention discloses a herbicidal compositions containing safety agent, which contains 3-methyl-2-[5-(2-chlor-4- trifluoromethylphenoxy)-2-nitrylbenzoxy]-3-ethyl crotonate(SYP-249) as effective constituent and a herbicidal safety agent selected from fenchlorazole, mefenpyr-diethyl, dichlormid, brassinolide. Herbicidal compositions is respectively processed to missible oil, suspending agent (emulsion), aqueous emulsion, microemulsion, water dispersed granule, wettable powder. Disposal of the wheat leaf and growth spot with the said composition can relieve the damage to wheat of herbicide without influencing the weeds prevention and expelling effect.

Description

A kind of Herbicidal combinations that contains safener

Technical field

The invention belongs to the weed killer herbicide field.Relate to a kind of Herbicidal combinations that contains safener.

Background technology

Chemical herbicide also causes damage to the needed crop of people easily when eliminating weeds, for Herbicidal combinations, one of most important requirement is its selectivity, promptly only acts on target, and for the plant growth that does not influence.

3-methyl-2-[5-(2-chloro-4-4-trifluoromethylphenopendant)-2-p-nitrobenzoic acid-base]-3-butenoic acid ethyl (test code number SYP-249) is a kind of broad spectrum weeding agent, have and kill the characteristics that careless speed is fast, have soil and cauline leaf processing activity of weeding concurrently, the preparation of its compound and application are open in Chinese invention patent application CN1325624A.Discover that further this weed killer herbicide especially has outstanding herbicidal effect to broad leaved weed, but when high dose uses to raise crop for example wheat easily cause bigger damage.

Summary of the invention

For the real selective weed control of realizing, alleviate 3-methyl-2-[5-(2-chloro-4-4-trifluoromethylphenopendant)-2-p-nitrobenzoic acid-base]-3-butenoic acid ethyl (SYP-249) in use causes the degree of damage to wheat, the invention provides a kind of new Herbicidal combinations that contains herbicide-safener, this Herbicidal combinations not only can keep the drug effect of former weed killer herbicide management of weeds, and can obviously alleviate even eliminate for example poisoning of wheat of raise crop.

Herbicidal combinations active ingredient of the present invention is:

3-methyl-2-[5-(2-chloro-4-4-trifluoromethylphenopendant)-2-p-nitrobenzoic acid-base]-the 3-butenoic acid ethyl

Molecular formula: C ₂₁H ₁₇ClF ₃N, relative molecular weight: 375.8

Herbicide-safener be selected from following any one:

1) fenchlorazole

1-(2,4 dichloro benzene base)-5-trichloromethyl-1H-1,2,4-triazole-3-carboxylic acid, ethyl ester (fenchlorazole);

2) mefenpyrdiethyl

(RS)-and 1-(2,4 dichloro benzene base)-5-antazoline-3,5-diethyl dicarboxylate (mefenpyr-diethyl);

3) allyl dichloride amine

N, N-diallyl-2,2-dichloro acetamide (dichlormid); Or

4) brassin lactones

2 α, 3 α, 22 (R), 23 (R)-tetrahydroxy-24 (S)-methyl-β-Gao-7-oxa-5 alpha-cholestane-6 ketone (brassinolide).

The suitable ratio of weight and number of weeding active ingredient and safener is 10 in the Herbicidal combinations that the present invention proposes: 1-1: 2.Test shows, when changing in the scope of weeding active ingredient in effective dose, further increases the ratio of safener in composition, can not influence herbicidal effect equally.The implication of herbicidally effective amount is that those skilled in the art are known.

The weight percentage of active component is 1-90% in the Herbicidal combinations of the present invention, and preferable is 5% to 85%.According to different preparation types, the active component content scope is different.Usually, liquid preparation contains 1-70% active substance by weight, preferably is 5-40%; Solid pharmaceutical preparation contains 5% to 85% active substance by weight, preferably is 10-40%; Suspension preparation contains the active substance of 10-60% by weight, preferably is 5-35%.

The present invention also comprises the preparation of the Herbicidal combinations that contains safener.Also contain at least a liquid diluent or solid carrier and surfactant in the Herbicidal combinations that contains safener of the present invention, the dispersion of active ingredient in water when being beneficial to use, and help making it can correctly be applied to plant.As required, the Herbicidal combinations that contains safener of the present invention can be made into formulations such as missible oil, aqueous emulsion, microemulsion, suspending agent or suspended emulsion, wetting powder, water-dispersible granules or liquor.Above preparing preparation is that those skilled in the art are known, and the addition sequence of herbicide-safener is not had specific (special) requirements.

Used solid carrier has diatomite, white carbon, bentonite, hexamethylene diamine, kaolin etc. in the Herbicidal combinations preparation of the present invention; Used liquid diluent has water, methyl alcohol, ethanol, toluene, dimethylbenzene, N, N dimethyl formamide, acetonitrile, ethylene glycol, ethyl acetate equal solvent; Used surfactant has sodium lignin sulfonate, phenethyl phenol polyethenoxy ether, agricultural newborn OX-2681, agricultural newborn OX-8686, farming breast 2201, farming breast 600, Nongru-700 ^#, agricultural newborn NP-10, agricultural newborn 0203B, farming breast 507 ^#, agricultural newborn NP10, condensation compound of methyl naphthalene sulfonic acid and formaldehyde, naphthalenesulfonic acid-formaldehyde condensate, aluminium-magnesium silicate, polyvinyl alcohol, alkylaryl formaldehyde resin APEO, diphenyl phenolic group polyoxyethylene (n ₁₈) the ether formaldehyde condensation products etc.

The present invention also comprises the using method of the Herbicidal combinations that contains safener: the Herbicidal combinations of the present invention of using herbicidally effective amount on the somatomedins of weeds or these weeds or place.

Herbicidal combinations of the present invention is used for control of weed in wheat field and alleviates the purposes that crop is damaged.This Herbicidal combinations can obviously alleviate its active ingredient to the wheat poisoning in seedling stage; And, can obviously improve the safety of wheat along with the increase within the specific limits of safener dosage.

As can be seen from the test results, when 3-methyl-2-[5-(2-chloro-4-4-trifluoromethylphenopendant)-2-p-nitrobenzoic acid-base]-3-butenoic acid ethyl (SYP-249) is when using separately, poisoning can reach 5%～20% under 75～300gai/ha dosage, and poisoning can reach 35% under maximum dose level (600g ai/ha).Use Herbicidal combinations of the present invention, can neither influence preventive effect, alleviate damage again wheat to weeds.For example when the ratio that adds fenchlorazole or mefenpyrdiethyl among the SYP-249 is 2: 1～1: 2, can obviously alleviate the poisoning to wheat: poisoning only is 10% under maximum dose level (600g ai/ha), and under 75～300gai/ha dosage wheat has not been had poisoning.

Embodiment

Following instantiation describes the present invention in detail, but the present invention is limited to these examples absolutely not.Each data is weight percentage in the prescription.Weeding active ingredient in the example [3-methyl-2-[5-(2-chloro-4-4-trifluoromethylphenopendant)-2-p-nitrobenzoic acid-base]-3-butenoic acid ethyl is represented with test code number SYP-249.The adjustment of being carried out as the case may be during practical operation

Be interpreted as a part of the present invention with replenishing.

Example 1 (10% missible oil)

SYP-249????????????????????????????10％

Fenchlorazole 5%

The newborn OX-2681 7.5% of farming

The newborn OX-8686 4.5% of farming

Methyl alcohol 8%

Dimethylbenzene complements to 100%

Example 2 (15% soluble liquid)

SYP-249????????????????????????????15％

Allyl dichloride amine 15%

0203B??????????????????????????????4％

NP10???????????????????????????????4％

OX-2681????????????????????????????2％

N, N dimethyl formamide 12%

Methyl alcohol 4%

Water is mended to 100%

Example 3 (30% water dispersible granules)

SYP-249????????????????????????????30％

Brassin lactones 15%

Sodium lignin sulfonate 2%

Condensation compound of methyl naphthalene sulfonic acid and formaldehyde 25%

Hexamethylene diamine 4.5%

Bentonite complements to 100%

Example 4 (30% suspending agent)

SYP-249????????????????????????????30％

Fenchlorazole 15%

Naphthalenesulfonic acid-formaldehyde condensate 5%

White carbon black 0.1%

Aluminium-magnesium silicate 0.1%

Ethylene glycol 4%

Bubble opposes a little

Water complements to 100%

Example 5 (8% aqueous emulsion)

SYP-249????????????????????????????8％

Mefenpyrdiethyl 8%

Polyvinyl alcohol 0.9%

Alkylaryl formaldehyde resin APEO 12.5%

Farming breast 507 ^#10%

Dimethyl formamide 13%

Ethylene glycol 5%

Water complements to 100%

Example 6 (10% microemulsion)

SYP-249????????????????????????????10％

Mefenpyrdiethyl 5%

Diphenyl phenolic group polyoxyethylene (n ₁₈) ether

Formaldehyde condensation products 6%

Acetonitrile 10%

Ethyl acetate 8%

Farming breast 2,201 16.8%

Nongru-700 ^#5.2%

Ethylene glycol 5%

Water complements to 100%

Example 7 (15% suspending agent)

SYP-249????????????????????????????15％

Fenchlorazole 30%

Condensation compound of methyl naphthalene sulfonic acid and formaldehyde 2.8%

White carbon black 0.1%

Xanthans 0.1%

Ethylene glycol 4%

Bubble opposes a little

Water complements to 100%

Give birth to and survey example

Test method: sow quantitative wheat, piemarker, Siberian cocklebur seed respectively in diameter is the Disposable paper cup of 8cm, behind the earthing, places the greenhouse to cultivate, 3 repetitions are established in each processing.Treat that wheat carries out thinning when emerging 2 leaf phases of back, 1 true leaf of piemarker, 2 true leaves of Siberian cocklebur, the growing way of selecting and remain in each dixie cup comparatively wheat plant 5 strains, piemarker 3 strains, Siberian cocklebur 3 strains of uniformity is proceeded to cultivate.Dosage by experimental scheme when treating 3 leaf phases of wheat, 2 true leaves of piemarker, 4 true leaves of Siberian cocklebur carries out cauline leaf spraying processing on crawler type crop sprayer.Handle such herbicidal composition that contains antipoison of back routine observation to the preventive effects of weeds and to the safety of crop.After 15 days range estimation investigation each handle to the preventive effects of weeds and to the safety of wheat, the results are shown in following table 1 and table 2.

Table 1. adds behind the safener to the preventive effect of weeds and to the safety of wheat

Medicament	Dosage	Range estimation preventive effect (%) to weeds		Range estimation inhibiting rate to wheat
					????gai/hm 2	Piemarker	Siberian cocklebur
	10%SYP-249 missible oil	????150	????95					????98	??????10
10%SYP-249 missible oil				????300	????100	????100	??????20
	10%SYP-249 missible oil	????600	????100					????100	??????35
Example 1				????150+75	????95	????98	??????0
	Example 1	????300+150	????100					????100	??????0
Example 4				????300+150	????100	????100	??????0
	Example 6	????300+150	????100					????100	??????5
Example 5				????300+300	????100	????100	??????0
	Example 5	????600+600	????100					????100	??????5

Table 2. adds behind the safener to the preventive effect of weeds and to the safety of wheat

Medicament	Dosage	Range estimation preventive effect (%) to weeds		Range estimation inhibiting rate (%) to wheat
					??gai/hm 2	Piemarker	Siberian cocklebur
	SYP-249	??75	????75					????80	??5
??150				????95	????98	??10
		??300	????100				????100	??20
??600				????100	????100	??35
		The SYP-249+ fenchlorazole	??75+7.5				????75	????80	??0
??150+15	????95			????98	??5
			??300+30			????100	????100	??10
The SYP-249+ fenchlorazole	??75+37.5			????75	????80				??0
		??150+75	????95			????98	??0
	??300+150			????100	????100			??0
		??600+300	????100			????100	??8
	The SYP-249+ fenchlorazole			??75+75	????75			????80	??0
??150+150		????98	????100			??0
				??300+300	????100		????100	??0
??600+600		????100	????100			??5
				The SYP-249+ fenchlorazole	??75+150		????75	????80	??0
??150+300	????98	????100	??0
					??300+600	????100	????100	??0
??600+1200	????100	????100	??5
					The SYP-249+ mefenpyrdiethyl	??75+7.5	????75	????80	??0
??150+15	????95	????98	??5
				??300+30		????100	????100	??10
The SYP-249+ mefenpyrdiethyl	??75+37.5	????75	????80						??0
				??150+75	????95	????98	??0
	??300+150	????100	????100					??5
				??600+300	????100	????100	??10

The SYP-249+ mefenpyrdiethyl	??75+75	????75	????80	????0
					??150+150	????98	????100	????0
	??300+300	????100	????100	????0
					??600+600	????100	????100	????5
	The SYP-249+ mefenpyrdiethyl	??75+150	????75	????80					????0
??150+300					????98	????100	????0
		??300+600	????100	????100				????0
??600+1200					????100	????100	????5
		The SYP-249+ allyl dichloride amine	??75+7.5	????75				????80	????0
??150+15	????95				????98	????5
			??300+30	????100			????100	????15
The SYP-249+ allyl dichloride amine	??75+37.5				????75	????80			????0
		??150+75	????95	????98			????5
	??300+150				????100	????100		????10
		The SYP-249+ allyl dichloride amine	??75+75	????75			????80		????0
??150+150	????98				????100	????0
			??300+300	????100			????100	????10
The SYP-249+ allyl dichloride amine	??75+150				????75	????80			????0
		??150+300	????98	????100			????0
	??300+600				????100	????100		????8
		The SYP-249+ brassin lactones	??75+7.5	????75			????80		????5
??150+15	????95				????98	????10
			??300+30	????100			????100	????15
The SYP-249+ brassin lactones	??75+37.5				????75	????80			????0
		??150+75	????95	????98			????5
	??300+150				????100	????100		????10
		The SYP-249+ brassin lactones	??75+75	????75			????80		????0
??150+150	????95				????98	????5
			??300+300	????100			????100	????10
The SYP-249+ brassin lactones	??75+150				????75	????80			????0
		??150+300	????95	????98			????5
	??300+600				????100	????100		????10

Claims (7)

1, a kind of Herbicidal combinations, contain weeding active ingredient 3-methyl-2-[5-(2-chloro-4-4-trifluoromethylphenopendant)-2-p-nitrobenzoic acid-base]-3-butenoic acid ethyl and following any one herbicide-safener---fenchlorazole, mefenpyrdiethyl, allyl dichloride amine or brassin lactones, and acceptable surfactant and solid carrier or liquid diluent on an amount of agricultural.

2, according to the described Herbicidal combinations of claim 1, it is characterized in that: the weight ratio of described weeding active ingredient and safener is 10: 1-1: 2.

3, according to claim 1 or 2 described Herbicidal combinations, it is characterized in that: weeding active ingredient is 1～90% by weight in the composition.

4, according to the described Herbicidal combinations of claim 3, it is characterized in that: said composition can be mixed with acceptable forms on any agricultural.

5, the described Herbicidal combinations of claim 4 is characterized in that: the formulation of preparation is missible oil, suspension (breast) agent, aqueous emulsion, microemulsion, wetting powder or water dispersible granules.

6, a kind of control method for weed is characterized in that: the Herbicidal combinations as claimed in claim 1 of using herbicidally effective amount on the somatomedins of weeds or these weeds or place.

7, the described Herbicidal combinations of claim 1 is used for control of weed in wheat field and alleviates the purposes that crop is damaged.