CN101194620B - Bactericide agent composition containing tebuconazole - Google Patents

Abstract

The invention provides a bactericidal agent composition with tebuconazole, which comprises two components of A and B, wherein the component A is tebuconazole, the component B is selected from metiram and myclobutanil or polyoxin. The bactericidal agent composition with tebuconazole of the invention has the advantages of overall acting system, evident efficiency-increasing effect and little medicine-consuming amount, does not generate drug resistance after being continuous used and is used for preventing and curing various crop diseases, in particular to the prevention and cure of fleck leaf cast of apple trees.

Description

A kind of microbicide compositions that contains Tebuconazole

Technical field

The invention belongs to pesticide field, relate to a kind of microbicide compositions that contains Tebuconazole particularly.

Background technology

Tebuconazole: belong to triazole bactericidal agent.Be a kind of systemic fungicide,,, the control spot defoliation had good effect crop safety for table angle sterol biosynthesis inhibitor with protection and therapeutic action.But existing market only has Tebuconazole list agent product, and long-term use has produced serious resistance.

Zineb: be the protectant that a kind of foliage spray is used, many germs such as Pseudoperonospora cubensis, spot defoliation bacterium and anthrax bacteria etc. are had strong action of contace poison.To plant safety, the active ingredient chemical property is more active, in water, easily be oxidized to different thiocyanation compound, to the cause of disease thalline contain-enzyme of SH base has had strong inhibitory effects, and the direct kill pathogens spore of energy, suppress the germination of spore, stop in the germ invaded plants body, but very little to the mycelial lethal effect of cause of disease in the invaded plants body.

Nitrile bacterium azoles: the interior absorption triazole bactericidal agent that is a kind of tool protection and therapeutic activity.Mainly the biosynthesis to the ergosterol of pathogen plays inhibitory action, and the control spot defoliation is had good effect.This agent lasting period is long, to crop safety.But use cost is too high, is difficult on most of crops large tracts of land and promotes the use of.

Polyoxin: be the metabolite that streptomyces aureus produces, belong to the broad-spectrum antibiotics series bactericidal agent, have interior preferably absorption.Be a kind of efficient, the safety pesticide of low toxicity non-environmental-pollution has good effect to the control spot defoliation.Since belong to biologic product, the simple use, and preventive effect is slow.

In the real process of agricultural production, preventing and treating the problem that disease is easy to generate most is the drug-fast generation of germ.Important spot defoliation on the agricultural often takes place in the apple tree whole growth process because its spread speed is fast, and parasitic scope is wide, is easy to generate resistance especially.In some spot defoliations serious place of causing harm, common carbendazim, tmtd, thiophanate-methyl, use has not had any effect separately, and fruits output and quality are had a strong impact on, even the phenomenon of total crop failure appears in some local fruit tree.

The composition of different cultivars carries out composite, is to prevent and treat the very common and effective method that resistance produces.Different components carries out composite, according to the effect of practical application judge certain composite be synergy, add and or antagonism.Compound synergic is good prescription, owing to obviously improved actual control efficiency, reduced the usage amount of agricultural chemicals, thereby delayed the drug-fast generation of insect greatly, and be the important means (showing the result of 1+1＞2) of integrated control insect.Still do not report in the composite and application of Tebuconazole and zineb, nitrile bacterium azoles or polyoxin at present.

Summary of the invention

The purpose of this invention is to provide a kind of synergistic microbicide compositions that contains Tebuconazole that has.

In order to realize purpose of the present invention, a kind of microbicide compositions that contains Tebuconazole of the present invention, its active ingredient comprises two kinds of components of A, B, and wherein component A is a Tebuconazole, and B component is selected from a kind of in zineb, nitrile bacterium azoles or the polyoxin.

The weight proportion of component A of the present invention and B is 1: 80～80: 1.

Composition of the present invention comprises the component of following weight portion:

1～80 part of component A;

80～1 parts of B component;

5～15 parts of dispersants;

1.5～5 parts of stabilizing agents;

5～7 parts of wetting agents;

It is 100 parts that carrier is added into the said composition gross weight;

Wherein, be preferably:

1～20 part of component A;

65～80 parts of B component;

5～10 parts of dispersants;

1.5 parts of stabilizing agents;

5 parts of wetting agents;

It is 100 parts that carrier is added into the said composition gross weight.

Wherein, described dispersant is sodium lignin sulfonate or NO;

Described stabilizing agent is a kind of among tributyl phosphate, sulfurous acid triphenylmethyl methacrylate, the BHT;

Described wetting agent is to draw back a kind of in powder, Chinese honey locust, the soil temperature;

Described carrier is a kind of in bentonite, talcum powder, the kaolin.

Composition of the present invention can also further comprise the disintegrant of 3-5 weight portion, and wherein said disintegrant is a kind of in aluminium chloride, magnesium chloride, the ammonium sulfate.

Composition of the present invention can be prepared into formulations such as water dispersible granules, effervescent tablet or wetting powder by the method for this area routine.

When preparing described effervescent tablet, also can add the effervescent agent of 5～10 weight portions, comprise acid effervescent agent and alkaline effervescent agent, wherein acid effervescent agent is a citric acid, and alkaline effervescent agent is a sodium bicarbonate.

Described sodium lignin sulfonate has high temperature good dispersion, heat-resistant stability is good, pickup is little characteristics.

Described NO (nekal formaldehyde condensation products), it is good to have a dispersive property, under the normal temperature be solid, foaming characteristic little beyond, also have effects such as certain wetting solubilising.

Composition of the present invention can be used for preventing and treating corps diseases, is particularly useful for preventing and treating the apple tree spot defoliation.

The microbicide compositions that contains Tebuconazole of the present invention, through Tebuconazole and zineb, nitrile bacterium azoles or polyoxin are carried out composite mutually synergy research, find that Tebuconazole has strong synergistic effect respectively and between zineb, nitrile bacterium azoles or the polyoxin, its control efficiency to the apple tree spot defoliation is more than 2 times of one-component, and control efficiency can reach more than 90%.

The microbicide compositions that contains Tebuconazole of the present invention compared with prior art, has the characteristics of binary bactericidal composition, can prevent and treat the apple tree spot defoliation that agricultural goes up difficult control.And easy to use, saving of work and time, if adopt the different continuous dispenser of proportioning of the present invention 3 times, behind the last medicine 7 days control efficiency minimum be 90%, can reach 98%.

The microbicide compositions that contains Tebuconazole of the present invention in addition can improve preventive effect, reduces effective ingredient consumption, saves cost, delays the drug-fast generation of germ, and reduces the pollution to environment.Test medicine provides former medicine for producer.

Embodiment

Below in conjunction with embodiment content of the present invention is described further:

Test example 1 apple tree spot defoliation.

Present embodiment is to the effect research at control apple tree spot defoliation of the wetting powder of 80% Tebuconazole zineb (wherein the weight ratio of Tebuconazole zineb is 20: 65), 80% Tebuconazole nitrile bacterium azoles (Tebuconazole nitrile bacterium azoles weight ratio is 15: 70) and 80% Tebuconazole polyoxin (Tebuconazole nitrile bacterium azoles weight ratio is 1: 80).

Take back the apple tree spot defoliation leaf that adopt back in the orchard indoor, the cultivation 24h that preserves moisture about 21 ℃ impels and forms more spore on the scab, wash with sterile water then, be diluted under low power lens in (10 * 15) each visual field and add 0.25% gelatin in 3-5 the spore suspension to improve the adhesivity of spore on the blade face.

The leaf test method of preserving moisture is adopted in test.Three groups of experiments are set respectively, and wheat leaf blade of the same size is got in every group of experiment earlier, and 28 processing are set altogether, 100 leaves of every processing, and every processing repeats 4 times.Behind 2000 times of above-mentioned wettable powder dilution agents, constant sprays each processing in every group respectively routinely, connect bacterium behind the 24h, each is handled spray bacterium liquid and according to the progression in the table 1 series concentration is set, and the inoculation back is incubated (21-24 ℃) insulation (relative moisture is greater than 90%) to guarantee the invasion of germ in box.After morbidity is stable, investigates disease index according to apple leaf sheet spot defoliation grade scale complete stool, and make evaluating drug effect with blank.

1, state of an illness grade scale:

0 grade: blade does not have scab

1 grade: lesion area accounts for below 5% of whole blade area;

3 grades: lesion area accounts for the 6-10% of whole blade area;

5 grades: lesion area accounts for the 11-25% of whole blade area

7 grades: lesion area accounts for the 26-50% of whole blade area;

9 grades: lesion area accounts for more than 50% of whole blade area;

2, computational methods:

3, result and analysis:

The wetting powder of 80% Tebuconazole zineb (wherein the weight ratio of Tebuconazole zineb is 20: 65), 80% Tebuconazole nitrile bacterium azoles (Tebuconazole nitrile bacterium azoles weight ratio is 15: 70) and 80% Tebuconazole polyoxin (Tebuconazole nitrile bacterium azoles weight ratio is 1: 80) sees Table 1,2,3 in the effect of control apple tree spot defoliation.

Table 1 80% Tebuconazole zineb WP control alternaria leaf spot of apple result of the test

Handle	Repeat	Sick leaves at different levels before the medicine (really/and strain/fringe) the radix investigation result							Behind the medicine 7They sick leaves at different levels (really/and strain/fringe) investigation result							Preventive effect (%)
																	Total number of sheets	1 grade	3 grades	5 grades	7 grades	9 grades	Disease refers to	Total number of sheets	1 grade	3 grades	5 grades	7 grades	9 grades	Disease refers to
		80% Tebuconazole zineb WP	1	100	8	1	0	0	0	1.22	100	7	1	1	0																0	1.67	86.05
2	100															10	0	0	0	0	1.11	100	7	1	0	0	0	1.11	86.06
			3	100	11	0	0	0	0	1.22	100	8	1	0	0															0	1.22	86.50
4	100															8	0	0	0	0	0.89	100	10	0	0	0	0	1.11	86.18
			On average	100	9.25	0.25	0	0	0	1.11	100	8	0.7 5	0.25	0															0	1.28	86.20
80% Tebuconazole zineb WP	1															100	9	1	0	0	0	1.33	100	10	2	1	0	0	2.33				82.14
		2	100	10	1	0	0	0	1.44	100	9	1	1	0	0															1.89	81.70
	3															100	8	0	0	0	0	0.89	100	8	1	0	0	0	1.22			81.50
		4	100	12	0	0	0	0	1.33	100	8	2	1	0	0															2.11	82.42
	On average															100	9.75	0.5	0	0	0	1.25	100	8.75	1.5	0.75	0	0	1.89			81.94
		80% Tebuconazole generation	1	100	10	1	0	0	0	1.26	100	6	2	0	0															0	1.69		89.01
2	100															11	0	0	0	0	2.01	100	8	1	1	0	0	2.10	81.23
			3	100	9	0	0	0	0	1.34	100	7	1	1	0															0	1.79	81.46

Gloomy zinc WP	4	100	8	0	0	0	0	1.35	100	9	1	0	0	0	2.01	82.34
																	On average	100	9.5	0.25	0	0	0	1.49	100	7.5	1.2 5	0.5	0	0	1 89	83.51
	Blank	1	100	10	0	0	0	0	1.11	100	56	9	3	0	0	10.89																	——
2																	100	10	1	0	0	0	1.44	100	68	5	2	0	0	10.33	——
		3	100	7	2	0	0	0	1.44	100	60	7	3	0	0	10.67																——
4																	100	12	0	0	0	0	1.33	100	61	9	4	0	0	12.00	——
		On average	100	9.75	0.75	0	0	0	1.33	100	61.25	7.5	3	0	0	10.97																——

Table 2 80% Tebuconazole nitrile bacterium azoles WP control alternaria leaf spot of apple result of the test

Handle	Repeat	Sick leaves at different levels before the medicine (really/and strain/fringe) the radix investigation result				Behind the medicine 10They sick leaves at different levels (really/and strain/fringe) investigation result							Preventive effect (%)
														Total number of sheets	1 grade	3 grades	Disease refers to	Total number of sheets	1 grade	3 grades	5 grades	7 grades	9 grades	Disease refers to
		80% Tebuconazole nitrile bacterium azoles WP	1	100	10	0	1.20	100	9	10	6	0													0	1.48	83.02
2	100												11	0	1.11	100	8	11	5	0	0	1.15	80.24
			3	100	12	0	1.08	100	8	10	3	1												0	1.59	79.68
4	100												9	0	1.24	100	7	9	2	0	0	1.80	80.16
			On average				1.16																		1.50	80.78
80% Tebuconazole nitrile bacterium azoles WP	1												100	9	0	1.85	100	10	9	6	0	0	2.10				81.28
		2	100	8	0	1.59	100	11	8	8	0	0												1.56	84.22
	3												100	7	0	1.07	100	9	6	6	1	0	1.73			86.17
		4	100	10	0	1.22	100	8	10	7	1	0												1.65	81.48
	On average															1.43							1.76			83.29
		80% Tebuconazole nitrile bacterium azoles WP	1	100	11	0	1.07	100	24	33	8	0												0	1.07		86.64
2	100												9	0	1.15	100	26	27	7	1	0	1.04	84.71
			3	100	10	0	1.30	100	22	28	8	0												0	1.81	88.91
4	100												13	0	1.22	100	25	28	3	0	0	1.19	87.33
			On average				1.19																		1.28	85.40
Blank	1												100	15	0	1.01	100	63	9	10	0	0	7.56				——
		2	100	11	0	1.93	100	65	6	15	0	0												8.61	——
	3												100	12	0	1.22	100	63	6	9	0	0	9.05			——
		4	100	10	0	1.12	100	62	8	10	0	0												8.59	——
	On average															1.32							84.53			——

Table 3 80% Tebuconazole polyoxin WP control alternaria leaf spot of apple result of the test

Handle	Repeat	Sick leaves at different levels before the medicine (really/and strain/fringe) the radix investigation result				Behind the medicine 10They sick leaves at different levels (really/and strain/fringe) investigation result							Preventive effect (%)
														Total number of sheets	1 grade	3 grades	Disease refers to	Total number of sheets	1 grade	3 grades	5 grades	7 grades	9 grades	Disease refers to
		80% Tebuconazole polyoxin WP	1	100	10	0	1.19	100	11	9	7	0													0	1.68	80.25
2	100												9	0	1.23	100	9	10	5	0	0	1.52	81.02
			3	100	9	0	1.32	100	8	9	5	0												0	1.37	86.32
4	100												7	0	1.34	100	8	7	3	0	0	1.49	82.03
			On average				1.27																		1.52	82.41

Handle	Repeat	Sick leaves at different levels before the medicine (really/and strain/fringe) the radix investigation result				Behind the medicine 10They sick leaves at different levels (really/and strain/fringe) investigation result							Preventive effect (%)
														Total number of sheets	1 grade	3 grades	Disease refers to	Total number of sheets	1 grade	3 grades	5 grades	7 grades	9 grades	Disease refers to
		80% Tebuconazole polyoxin WP	1	100	9	0	2.01	100	9	10	4	0													0	1.96	84.21
2	100												8	0	1.62	100	9	11	5	0	0	1.45	85.04
			3	100	7	0	1.58	100	7	8	9	0												0	1.67	87.35
4	100												10	0	1.20	100	10	7	7	0	0	1.85	80.37
			On average				1.60																		1.73	84.24

Handle	Repeat	Sick leaves at different levels before the medicine (really/and strain/fringe) the radix investigation result				Behind the medicine 10They sick leaves at different levels (really/and strain/fringe) investigation result							Preventive effect (%)
														Total number of sheets	1 grade	3 grades	Disease refers to	Total number of sheets	1 grade	3 grades	5 grades	7 grades	9 grades	Disease refers to
		80% Tebuconazole polyoxin WP	1	100	12	0	1.08	100	10	33	9	0													0	1.07	87.05
2	100												10	0	1.13	100	9	27	7	0	0	1.04	83.62
			3	100	9	0	1.25	100	8	28	6	0												0	1.81	85.63
4	100												8	0	1.21	100	11	28	5	0	0	1.19	86.15
			On average				1.17																		1.28	85.61

Handle	Repeat	Sick leaves at different levels before the medicine (really/and strain/fringe) the radix investigation result				Behind the medicine 10They sick leaves at different levels (really/and strain/fringe) investigation result							Preventive effect (%)
														Total number of sheets	1 grade	3 grades	Disease refers to	Total number of sheets	1 grade	3 grades	5 grades	7 grades	9 grades	Disease refers to
		Blank	1	100	16	0	1.59	100	65	9	11	0													0	8.15	——
2	100												13	0	1.36	100	59	6	9	0	0	7.68	——
			3	100	9	0	1.20	100	62	6	9	0												0	8.58	——
4	100												11	0	1.31	100	68	8	7	0	0	9.04	——
			On average				1.37																		8.36	——

Test example 2

In order to prevent and treat the spot defoliation that agricultural goes up difficult control, be combined as the bactericide that is mixed with in Tebuconazole and zineb, nitrile bacterium azoles or the polyoxin any one, it is carried out composite mutually synergy research.

Identical for mechanism of action, the composition of different cultivars is mixed, and is a kind of optimal selection for preparing bactericide.If reasonable proportioning is arranged, usually can produce synergistic effect.Make field control effect significantly be better than the effect of each single agent, show the result of 1+1＞2.

This experiment adopts growth rate method to carry out, and be mixed into contrast with equivalent aqua sterilisa and medium, calculate toxicity equation and lethal concentration of 50 EC50 with method of least squares, calculate the different proportioning synergy ratios (SR) of medicament according to the Wadley method, wherein SR＜0.5 is an antagonism, 0.5≤SR≤1.5 are summation action, SR＞1.5 are synergistic effect.

On agricultural, prevent and treat the apple tree spot defoliation with the microbicide compositions that Tebuconazole and zineb, nitrile bacterium azoles or polyoxin are formed, specifically the result of the test data see the following form 1, table 2 and table 3.

The measurement result of apple tree spot defoliation sees Table 1 respectively, table 2 and table 3.

Table 1 Tebuconazole+zineb is to the spot defoliation experimental result

Handle (Kg)	EC50(μg/ml))	Synergy ratio (SR)
			Tebuconazole 1+ zineb 80	6.97	1.25
Tebuconazole 10+ zineb 75	6.35	1.37
			Tebuconazole 20+ zineb 65	5.68	1.54
Tebuconazole 40+ zineb 40	4.36	1.44
			Tebuconazole 60+ zineb 25	4.62	1.34
Tebuconazole 70+ zineb 15	5.12	1.42
			Tebuconazole 80+ zineb 1	5.61	1.39
Tebuconazole	14.45	-
			Zineb	11.52	-

Table 2 Tebuconazole+nitrile bacterium azoles is to the spot defoliation experimental result

Handle	EC50(μg/ml))	Synergy ratio (SR)
			Tebuconazole 1+ nitrile bacterium azoles 80	16.04	1.37
Tebuconazole 15+ nitrile bacterium azoles 70	17.21	1.56
			Tebuconazole 30+ nitrile bacterium azoles 55	13.42	1.48

Handle	EC50(μg/ml))	Synergy ratio (SR)
			Tebuconazole 50+ nitrile bacterium azoles 40	15.09	1.42
Tebuconazole 70+ nitrile bacterium azoles 25	14.21	1.39
			Tebuconazole 75+ nitrile bacterium azoles 10	19.31	1.28
Tebuconazole 80+ nitrile bacterium azoles 1	15.04	1.40
			Tebuconazole	11.76	-
Nitrile bacterium azoles	10.82	-

Table 3 Tebuconazole+polyoxin is to the spot defoliation experimental result

Handle	EC50(μg/ml)	Synergy ratio (SR)
			Tebuconazole 1+ polyoxin 80	19.67	1.58
Tebuconazole 5+ polyoxin 75	17.19	1.30
			Tebuconazole 25+ polyoxin 50	15.79	1.36
Tebuconazole 50+ polyoxin 35	13.08	1.49
			Tebuconazole 65+ polyoxin 20	14.35	1.28
Tebuconazole 75+ polyoxin 5	11.26	1.46
			Tebuconazole 80+ polyoxin 1	10.95	1.37
Tebuconazole	12.31	-
			Polyoxin	17.62	-

As can be seen from the table, in Tebuconazole and zineb, nitrile bacterium azoles or the polyoxin any one is combined as the bactericide that is mixed, obvious synergistic effect is arranged, spot defoliation to difficult control on the agricultural has good control efficiency to compare with the existing bactericide of clicking, and it has improved 2-3 doubly to control apple tree spot defoliation effect.

The control of embodiment 3, apple tree spot defoliation

With Tebuconazole weight proportion 20g, zineb 5g, sodium lignin sulfonate 15g, aluminium chloride 4g, tributyl phosphate 1.5g, drawing back powder 5g, kaolin, to supply total amount be that 100g mixes, use comminution by gas stream, make water dispersible granules through kneading, granulation, drying, screening.

The water dispersible granules made by 2000～2500 times of dilutions, is sparged the apple tree that the field has spot defoliation, and 72 hours field control effects are 96.69% behind the medicine.

10% tebuconazole water dispersible granule and 30% water dispersion granules agent of dithane use with quadrat method according to above-mentioned, and 72 hours control efficiency are respectively 43.86% and 44.6% behind the medicine.

The control efficiency of present embodiment obviously as can be seen mixture preparation than both single agent preventive effects all exceed 1.5-2 doubly more than.

The control of embodiment 4, apple tree spot defoliation

With Tebuconazole 20.9g, zineb 26g, sodium lignin sulfonate 15g, aluminium chloride 4g, stabilizing agent tributyl phosphate 1.5g, drawing back powder 5g, kaolin, to supply total amount be 100g, mixes, compressing tablet is made effervescent tablet.

The effervescent tablet made by 2000～2500 times of dilutions, is sparged the apple tree that the field has spot defoliation, and 72 hours field control effects are 93.63% behind the medicine.

10% Tebuconazole effervescent tablet and 30% zineb effervescent tablet use with quadrat method according to above-mentioned, and 72 hours preventive effects are respectively 49.68% and 50.01% behind the medicine.

The obvious mixture preparation as can be seen of control efficiency according to embodiment all exceeds 1.5-2 doubly than the control efficiency that both single agent are used for the apple tree spot defoliation.

The control of embodiment 5, apple tree spot defoliation

With Tebuconazole 10.9g, zineb 5g, sodium lignin sulfonate 15g, aluminium chloride 4g, tributyl phosphate 1.5g, drawing back powder 5g, kaolin, to supply gross weight be that 100g mixes, place stirred tank evenly to stir compound then, after mixing again behind the airslide disintegrating mill, make wetting powder.

The wetting powder made by 2000～2500 times of dilutions, is sparged the apple tree that the field has spot defoliation, and 72 hours field control effects are 93.90% behind the medicine.

10% Tebuconazole wetting powder and 30% Zineb wettable powder use with quadrat method according to above-mentioned, and 72 hours preventive effects are respectively 47.28% and 44.01% behind the medicine.

The obvious mixture preparation as can be seen of control efficiency according to present embodiment all exceeds 1.5-2 doubly than the control efficiency that both single agent are used for the apple tree spot defoliation.

The control of embodiment 6, apple tree spot defoliation

It is 100g that Tebuconazole 10g, nitrile bacterium azoles 30g, sodium lignin sulfonate 11g, magnesium chloride 5g, sulfurous acid triphenylmethyl methacrylate 3g, Chinese honey locust 6g, kaolin are supplied gross weight, makes water dispersible granules according to the method for embodiment 3.

Water dispersible granules by 2000～2500 times of dilutions, is sparged the apple tree that the field has spot defoliation, and 72 hours field control effects are 95.85% behind the medicine.

10% tebuconazole water dispersible granule and 30% nitrile bacterium azoles water dispersible granules are according to using with quadrat method, and 72 hours preventive effects are respectively 48.86% and 43.5% behind the medicine.

Obvious this mixture preparation as can be seen of control efficiency according to present embodiment all exceeds more than 1.5-2 times than the preventive effect that both single agent are used for the apple tree spot defoliation.

The control of embodiment 7, apple tree spot defoliation

With Tebuconazole 10g, nitrile bacterium azoles 30g, sodium lignin sulfonate 11g, magnesium chloride 5g, sulfurous acid triphenylmethyl methacrylate 3g, Chinese honey locust 6g, citric acid 5g, it is 100g that kaolin is supplied gross weight, mixes, and makes effervescent tablet.

Effervescent tablet by 2000～2500 times of dilutions, is sparged the apple tree that the field has spot defoliation, and 72 hours field control effects are 93.52% behind the medicine.

10% Tebuconazole effervescent tablet and 30% nitrile bacterium azoles effervescent tablet use with quadrat method according to above-mentioned, and 72 hours preventive effects are respectively 54.21% and 56.26% behind the medicine.

The obvious mixture preparation as can be seen of control efficiency according to embodiment all exceeds more than 1.5-2 times than the control efficiency that both single agent are used for the apple tree spot defoliation.

The control of embodiment 8, apple tree spot defoliation

Tebuconazole 10g, nitrile bacterium azoles 30g, sodium lignin sulfonate 11g, magnesium chloride 5g, sulfurous acid triphenylmethyl methacrylate 3g, Chinese honey locust 6g, kaolin are supplied 100g, and the preparation method according to embodiment 5 makes wetting powder.Wetting powder by 2000～2500 times of dilutions, is sparged the apple tree that the field has spot defoliation, and 72 hours field control effects are 95.02% behind the medicine.

10% Tebuconazole wetting powder and 30% nitrile bacterium azoles wetting powder use with quadrat method according to above-mentioned, and 72 hours control efficiency are respectively 50.64% and 46.86% behind the medicine.

Obviously this mixture preparation all exceeds more than 1.5-2 times than the control efficiency that both single agent are used for the apple tree spot defoliation as can be seen.

The control of embodiment 9, apple tree spot defoliation

It is 100g that Tebuconazole 10g, polyoxin 30g, NNO10g, ammonium sulfate 3g, BHT5g, tween 7g, kaolin are supplied gross weight, according to the method for embodiment 3, makes water dispersible granules.

Water dispersible granules by 2000～2500 times of dilutions, is sparged the apple tree that the field has spot defoliation, and 72 hours field control effects are 92.64% behind the medicine.

10% tebuconazole water dispersible granule and 30% polyoxin water dispersible granules use with quadrat method according to above-mentioned, and 72 hours control efficiency are respectively 50.39% and 42.7% behind the medicine.

Obvious this mixture preparation as can be seen of control efficiency according to present embodiment all exceeds more than 1.5-2 times than the control efficiency that both single agent are used for the apple tree spot defoliation.

The control of embodiment 10, apple tree spot defoliation

With Tebuconazole 10g, polyoxin 30g, NNO10g, ammonium sulfate 3g, BHT5g, tween 7g, sodium bicarbonate 10g, it is 100g that kaolin is supplied gross weight, and said components is mixed, and makes effervescent tablet.

Effervescent tablet by 2000～2500 times of dilutions, is sparged the apple tree that the field has spot defoliation, and 72 hours field control effects are 90.01% behind the medicine.

10% Tebuconazole effervescent tablet and 30% polyoxin effervescent tablet use with quadrat method according to above-mentioned, and 72 hours control efficiency are respectively 48.65% and 50.21% behind the medicine.

Obvious this mixture preparation as can be seen of control efficiency according to present embodiment all exceeds more than 1.5-2 times than the control efficiency that both single agent are used for the apple tree spot defoliation.

The control of embodiment 11, apple tree spot defoliation

Tebuconazole 10g, polyoxin 30g, NNO10 ammonium sulfate 3g, BHT5g, tween 7g, kaolin are supplied 100g, make wetting powder according to the method for embodiment 5.

Wetting powder by 2000～2500 times of dilutions, is sparged the apple tree that the field has spot defoliation, and 72 hours field control effects are 91.40% behind the medicine.

10% Tebuconazole wetting powder and 30% polyoxin wetting powder are according to using with quadrat method, and 72 hours control efficiency are respectively 52.42% and 53.62% behind the medicine.

Obvious this mixture preparation as can be seen of control efficiency according to present embodiment all exceeds more than 1.5-2 times than the preventive effect that both single agent are used for the apple tree spot defoliation.

The used single agent of embodiment all is commercial.

The control of embodiment 12, apple tree spot defoliation

It is 100g that Tebuconazole 1g, polyoxin 80g, NNO8g, ammonium sulfate 3g, BHT1.5g, Chinese honey locust 5g, kaolin are supplied gross weight, makes wetting powder according to the method for embodiment 5.

By 2000～2500 times of dilution sprayings, 72 hours field control effects are 90.30% behind the medicine with wetting powder.

The control of embodiment 13, apple tree spot defoliation

It is 100g that Tebuconazole 80g, polyoxin 1g, NNO8g, ammonium sulfate 3g, BHT1.5g, Chinese honey locust 5g, kaolin are supplied gross weight, makes wetting powder according to the method for embodiment 5.

Wetting powder by 2000～2500 times of dilutions, is sparged the apple tree that the field has spot defoliation, and 72 hours field control effects are 90.30% behind the medicine.

The control of embodiment 14, apple tree spot defoliation

It is 100g that Tebuconazole 20g, zineb 65g, sodium lignin sulfonate 5g, BHT1.5g kaolin are supplied gross weight, makes wetting powder according to the method for embodiment 5.

Wetting powder by 2000～2500 times of dilutions, is sparged the apple tree that the field has spot defoliation, and 72 hours field control effects are 92.30% behind the medicine.

The control of embodiment 15, apple tree spot defoliation

It is 100g that Tebuconazole 15g, nitrile bacterium azoles 70g, sodium lignin sulfonate 5g, BHT1.5g kaolin are supplied gross weight, makes wetting powder according to the method for embodiment 5.

Wetting powder by 2000～2500 times of dilutions, is sparged the apple tree that the field has spot defoliation, and 72 hours field control effects are 91.70% behind the medicine.

Claims (3)

1. microbicide compositions water dispersible granules that contains Tebuconazole, it is characterized in that, by with Tebuconazole weight proportion 20g, zineb 5g, sodium lignin sulfonate 15g, aluminium chloride 4g, tributyl phosphate 1.5g, drawing back powder 5g, kaolin, to supply total amount be that 100g mixes, use comminution by gas stream, make through kneading, granulation, drying, screening.

2. the application of the described composition of claim 1 in crop disease control.

3. application as claimed in claim 2 is characterized in that, described corps diseases is the apple tree spot defoliation.