CN111226968A - Composition for preventing and killing weeds in transplanted paddy field by triafamone and bensulfuron methyl and application thereof - Google Patents
Composition for preventing and killing weeds in transplanted paddy field by triafamone and bensulfuron methyl and application thereof Download PDFInfo
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- CN111226968A CN111226968A CN202010199825.6A CN202010199825A CN111226968A CN 111226968 A CN111226968 A CN 111226968A CN 202010199825 A CN202010199825 A CN 202010199825A CN 111226968 A CN111226968 A CN 111226968A
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- weeds
- triafamone
- bensulfuron
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
- A01N47/36—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/64—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with three nitrogen atoms as the only ring hetero atoms
- A01N43/66—1,3,5-Triazines, not hydrogenated and not substituted at the ring nitrogen atoms
Abstract
The invention discloses a composition for preventing and killing weeds in transplanted paddy fields by triafamone and bensulfuron-methyl and application thereof. The herbicide composition can effectively prevent and kill off gramineous, broadleaf and cyperaceous weeds in transplanted paddy fields, and is safe to rice; the dosage can be obviously reduced, the application times can be reduced, and the chemical prevention and control cost in the field can be reduced; the generation and reoccurrence of the drug resistance of the weeds are delayed; expanding the weed control spectrum of the herbicide and the like. Is a feasible herbicide composition for preventing and killing weeds in transplanted paddy fields at present.
Description
Technical Field
The invention belongs to the technical field of plant protection, and relates to a herbicide composition taking triafamone and bensulfuron as effective components, which is used for preventing and killing weeds in transplanted paddy fields.
Background
China has a long history of rice cultivation, and at least 7000 years of history are available today. More than 50% of the population in China takes rice as staple food, and the rice consumption is very large every year. Meanwhile, the planting area and the production of rice in China are in the world leading level, the annual sowing area is about 3000 hectares, which is only lower than that of the second place in India, more than 2 hundred million tons of rice are produced annually, and the first place in the world is in 113 rice planting countries all over the world.
The weeds are various and grow fast, the weeds are the main factors influencing the rice yield, and the yield reduction of the rice can reach more than 80 percent without taking any weeding measures. The main current weeding measure is to use herbicide to prevent and kill off the weeds chemically, according to rough statistics, the chemical weeding occupies more than 90% of the area of the rice field, and the chemical weeding has the advantages of labor saving, time saving, high efficiency, economy and the like and is accepted by vast farmers. But the long-term use of the chemical herbicide can easily cause drug resistance, the actual prevention effect in the field is reduced, the times of using the herbicide are more, and the dosage is larger. Therefore, how to improve the control effect of the herbicide and reduce the dosage of the herbicide is a problem which must be faced.
Fomesalamine is an acetolactate synthase (ALS) inhibitor that inhibits cell division and plant growth by preventing the biosynthesis of valine, leucine, and isoleucine. The root system and the bud are mainly absorbed, and the weeding activity is absorbed by the stem leaves. It can be used for preventing and killing gramineous weeds, nutgrass flatsedge and broadleaf weeds in paddy field before or after emergence. Can effectively prevent and kill barnyard grass, paspalum distichum, scirpus planiculmis, cyperus annuus and the like; it also has good inhibiting effect on broad-leaved weeds such as ludwigia prostrata, arrowhead, eclipta prostrata, potamogeton indica, etc., and perennial sedge.
Bensulfuron-methyl is a selective systemic herbicide. The pesticide can diffuse in water rapidly, and can be absorbed by weed root and leaf and transferred to other parts to inhibit branched chain amino acid biosynthesis. The growth function of the sensitive weeds is hindered, young tissues are yellowed early, and the growth of leaves and roots is inhibited. Can effectively control annual and perennial broadleaf weeds and nutgrass flatsedge in the rice field, such as rhizoma alismatis, amaranth, monochoria vaginalis, stranguria japonica, herba arthrodii, eyebright, rhizoma pleionis, abnormal nutgrass flatsedge, cyperus rotundus, fimbristylis, cyperus rotundus, feltwort, and the like; it also has certain inhibiting effect on barnyard grass.
Disclosure of Invention
The invention aims to prevent and kill weeds in a rice transplanting field by using a herbicide composition.
The invention realizes the aim through the following technical scheme:
the main components of the herbicide composition are triafamone and bensulfuron methyl, which are used for preventing and killing weeds in rice transplanting fields.
The medicament using method comprises the following steps: the pesticide is applied 1-3 days after the rice is sowed, and is uniformly sprayed, and a shallow water layer with the depth of 2 cm in a paddy field is kept for more than 7 days.
Compared with the existing common herbicide for paddy fields, the herbicide composition has the following advantages:
(1) has obvious synergistic effect on the transplanted paddy field weeds, and the preventing and removing effect is obviously superior to the preventing effect when a single agent is applied independently.
(2) Can obviously reduce the dosage, reduce the dosage frequency and reduce the chemical preventing and removing cost in the field.
(3) Can delay the generation and reoccurrence of drug resistance of weeds.
(4) Can control part of gramineous, broadleaf and cyperaceous weeds, and expand the weed control spectrum.
Detailed Description
(I) triafamone and bensulfuron-methyl composition ratio screening test-indoor test:
the indoor tests were carried out in a sunlight greenhouse from 7 months in 2019 to 8 months in 2019.
Reagent to be tested: pyroxsulam; bensulfuron methyl
The tested weeds: barnyard grass (collected in 10 months of 2018 from seven-eyed bridgetown, west show area, of ann cis city, Guizhou province);
carignane intestine (collected from the city of Yangzhou city of Jiangzhou Jiangdu town of Jiangsu province in 8 months in 2018)
Laboratory test procedure
1. Medicament dose setting for screening test of mixture ratio of triafamone and bensulfuron methyl composition
1.1 Each single dose setting is as follows:
fomitonesulfonamide (A): 0(A0), 1.5(A1), 3(A2), 6(A3), 12(A4), 24(A5) g a.i./hm2；
Bensulfuron-methyl (B): 0(B0), 2.82(B1), 5.63(B2), 11.25(B3), 22.5(B4), 45(B5) g a.i./hm2。
1.2 Fluoroketosulam and bensulfuron methyl composition ratio screening test medicament dose setting is shown in Table 1:
TABLE 1 Fluoroketosulam and bensulfuron methyl composition ratio screening dosage setting table
2. Screening test process for proportion of triafamone and bensulfuron composition
Organic soil without herbicide is filled into a plastic cup with the specification of 7 multiplied by 7cm, the pH value is 6.7, and the organic matter content is 1.4%. Selecting barnyard grass and carignan seeds with plump seeds, sowing 20 seeds in each plastic cup, covering a layer of fine soil on the seeds in the plastic cup in which the barnyard grass is sowed, adding water until the seeds are saturated, and culturing in a greenhouse. After 48h, the soil treatment of the sown barnyard grass and the carignane were carried out by a spraying method, and the same amount of clear water was sprayed in contrast, and each treatment was repeated 4 times. The spraying adopts a 3WP-2000 model walking type biological measurement spraying tower produced by Nanjing agricultural mechanization research institute of agricultural department, the rotation speed of a main shaft is 96mm/r, the spraying height is 300mm, the effective spraying amplitude of a spray head is 350mm, the flow rate of the spray head is 390mL/min, the walking distance is 1340mm, the volume of a liquid medicine is 20mL, and the device is placed in a greenhouse for growth (the temperature is 27 ℃ in the daytime and 22 ℃ at night).
At 30d after application, the fresh weight of weeds in each plastic box was recorded by investigation. Evaluating the combined weed suppression effect of the compounded medicament by using a Gowing method, respectively calculating the fresh weight inhibition rates of single-dose triafamone, bensulfuron and the compound of the triafamone and the bensulfuron for barnyard grass and carignane (formula 1), calculating the theoretical fresh weight inhibition rate of the compound agent (formula 2) according to the actual fresh weight inhibition rates of the single-dose triafamone and the bensulfuron, and comparing the theoretical fresh weight inhibition rate with the actual fresh weight inhibition rate of the compound agent to evaluate the type of the combined weed suppression effect:
fresh weight inhibition ratio (% control fresh weight-treated fresh weight)/control fresh weight × 100 — formula 1
E0 ═ X + Y-XY/100-equation 2
In the formula, E0 is the theoretical fresh weight inhibition rate of the herbicide triafamone and bensulfuron after compounding, X is the actual measurement fresh weight inhibition rate of the herbicide triafamone, and Y is the actual measurement fresh weight inhibition rate of the herbicide bensulfuron. And if E is the actually measured fresh weight inhibition rate of the compound of the triafamone and the bensulfuron methyl, the antagonism is realized when E-E0 is less than-10, the addition is realized when E-E0 is more than-10, and the synergism is realized when E-E0 is more than 10.
The results of the laboratory tests are shown in the following table:
TABLE 2 inhibition of the combination of Foncorzonamide and bensulfuron methyl for barnyard grass and carignane (E)
TABLE 3 theoretical inhibition of the combination of Foncorzonamide and bensulfuron methyl for barnyard grass and carignane (E)0)
TABLE 4 evaluation of the combined action of Fomesafen and bensulfuron methyl on barnyard grass and carignane
As can be seen from tables 2-4, triafamone and bensulfuron both have high activity to barnyard grass and carignane, and the combination of triafamone and bensulfuron shows synergistic effect to barnyard grass and carignane. As shown in the table 2, the fresh weight inhibition effect of the composition of the triafamone and the bensulfuron methyl in different proportions on barnyard grass and carignane can be seen, and the dosage of the triafamone is 12-24 g of a.i./hm2The dosage of the bensulfuron methyl is 22.5-45 g a.i./hm2When the fresh weight inhibition ratio of the pyroxsulam to the carissonia carinicana is close to 100 percent, the combined weed suppression effect is evaluated by comparing the theoretical fresh weight inhibition ratio with the actually measured fresh weight inhibition ratio of the compound agent, the proper proportion range of the good inhibition effect of the pyroxsulam to the bensulfuron methyl is 1: 1-3.75, the factors of preventing and removing cost, improving prevention effect and the like of the pyroxsulam and the bensulfuron methyl are comprehensively considered, and the proportion of the combination of the pyroxsulam and the bensulfuron methyl in the field for preventing and removing the rice resistant gramineous weeds is the most ideal when the proportion is 1: 2. Thus a comprehensive chamberThe results of the internal test are that when the dosage of the triafamone is 12g a.i./hm2The dosage of the bensulfuron methyl is 24g a.i./hm2In time, the weeds in the transplanted paddy field can be effectively prevented and removed.
Safety test-indoor test of (di) triafamone and bensulfuron-methyl composition for direct-seeded paddy rice
The indoor experiments were carried out in the sunlight greenhouse from 8 months in 2019 to 9 months in 2019.
Reagent to be tested: pyroxsulam; bensulfuron methyl
Test work: japonica rice (Huai rice No. 5); indica rice (Hanyou 73)
Laboratory experiment process
1. Safety test medicament dose setting of triafamone and bensulfuron methyl composition on transplanted paddy field
The safety test of the composition on rice the dose settings of the agents are as follows:
triafamone + bensulfuron: 0+0, 1.5+2.82, 3+5.63, 6+11.25, 12+22.5, 24+45g a.i./hm2
2. Safety test process of triafamone and bensulfuron methyl composition for transplanting paddy field
Organic soil without herbicide is filled into a plastic cup with the specification of 7 multiplied by 7cm, the pH value is 6.7, the organic matter content is 1.4 percent, and water is added until the organic soil is saturated. Selecting rice seeds with full seeds, sowing 10 seeds in each plastic cup, covering a layer of fine soil on the seeds in the plastic cups for sowing the rice, and culturing in a greenhouse. After 48h, the sown rice was soil-treated by spraying, and an equal amount of clear water was sprayed as a control, and each treatment was repeated 4 times. The spraying adopts a 3WP-2000 model walking type biological measurement spraying tower produced by Nanjing agricultural mechanization research institute of agricultural department, the rotation speed of a main shaft is 96mm/r, the spraying height is 300mm, the effective spraying amplitude of a spray head is 350mm, the flow rate of the spray head is 390mL/min, the walking distance is 1340mm, the volume of a liquid medicine is 20mL, and the device is placed in a greenhouse for growth (the temperature is 27 ℃ in the daytime and 22 ℃ at night).
30 days after the application of the composition, the fresh weight of each treated rice is investigated and recorded, the DPS software is used for analyzing the difference significance between different dosages and calculating the selectivity index of the composition, and the safety of the composition of the triafamone and the bensulfuron-methyl on the rice is evaluated according to the two aspects.
Fresh weight inhibition ratio (% control fresh weight-treated fresh weight)/control fresh weight × 100
The selectivity index is calculated as:
selectivity index (Z) versus ED for crop plants10ED of weeds90
TABLE 5 evaluation of safety of japonica rice 30 days after drug administration
Note: significance of difference at 0.05 level of Duncan New Complex Difference method
TABLE 6 evaluation of safety of indica 30 days after drug administration
Note: significance of difference at 0.05 level of Duncan New Complex Difference method
TABLE 7 Selectivity index of triafamone and bensulfuron combinations for Rice
As can be seen from tables 5 and 6, the significant test performed by the DPS software shows that the inhibition effect on the fresh weight of rice is not significantly increased with the increase of the dosage of the composition of triafamone and bensulfuron, and there is no significant difference between the average fresh weight of each treatment and the average fresh weight of the control, and as can be seen from table 7, the selectivity index of the composition of triafamone and bensulfuron on japonica rice is 5.68, and the selectivity index of the composition of triafamone and bensulfuron on rice is 5.22, which is greater than 4. Therefore, the composition of the triafamone and the bensulfuron is safe for the growth of rice in view of the safety evaluation and the selectivity index evaluation of the composition of the triafamone and the bensulfuron on the fresh weight of the rice.
Claims (7)
1. A composition for preventing and killing weeds in transplanted paddy fields of triafamone and bensulfuron-methyl and its application are disclosed, which can prevent and kill the weeds in gramineae, broad leaf and cyperaceae of transplanted paddy fields.
2. The composition for preventing and killing weeds in transplanted paddy fields containing triafamone and bensulfuron-methyl according to claim 1 has the control effect on barnyard grass and carignane of more than 90% under a proper dosage proportion.
3. The composition for preventing and killing weeds in transplanted paddy fields of triafamone and bensulfuron-methyl according to claim 1 is safe to paddy rice under the experimental set dosage and has no phytotoxicity.
4. According to the claim 1, compared with a single-dose composition, the composition for preventing and killing the weeds in the transplanted paddy field by using the triafamone and the bensulfuron can expand the weed control spectrum and control gramineous weeds, broadleaf weeds and sedge weeds.
5. The composition according to claim 1, wherein the dosage of the triafamone is 12-24 g a.i./hm2The dosage of the bensulfuron methyl is 24-48 g a.i./hm2Within the range, namely when the ratio of the triafamone to the bensulfuron-methyl is 1: 2, the effect on preventing and killing the weeds in the field is optimal.
6. The composition for preventing and killing weeds in transplanted paddy fields containing triafamone and bensulfuron as claimed in claim 1, which is characterized in that the composition is prepared into any one of dosage forms by taking triafamone and bensulfuron as active ingredients and an auxiliary agent allowed in pesticides.
7. The use according to claim 1, characterized in that the method of using the composition for controlling transplanted paddy field weeds with triafamone and bensulfuron is soil spray treatment.
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| CN202010199825.6A CN111226968A (en) | 2020-03-16 | 2020-03-16 | Composition for preventing and killing weeds in transplanted paddy field by triafamone and bensulfuron methyl and application thereof |
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| CN202010199825.6A CN111226968A (en) | 2020-03-16 | 2020-03-16 | Composition for preventing and killing weeds in transplanted paddy field by triafamone and bensulfuron methyl and application thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101636085A (en) * | 2007-02-19 | 2010-01-27 | 拜尔作物科学股份公司 | Herbicidal compositions comprising difluoromethanesulfonylanilide and one or more herbicides |
| CN102186346A (en) * | 2008-08-14 | 2011-09-14 | 拜尔农作物科学股份公司 | Herbicidal combination comprising dimethoxy-triazinyl-substituted difluoromethane sulfonylanilides |
| CN108719305A (en) * | 2018-06-05 | 2018-11-02 | 广东中迅农科股份有限公司 | Herbicidal combinations containing furans sulphur humulone and fluorine ketone sulphur grass amine and sulfonylurea herbicide |
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2020
- 2020-03-16 CN CN202010199825.6A patent/CN111226968A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101636085A (en) * | 2007-02-19 | 2010-01-27 | 拜尔作物科学股份公司 | Herbicidal compositions comprising difluoromethanesulfonylanilide and one or more herbicides |
| CN102186346A (en) * | 2008-08-14 | 2011-09-14 | 拜尔农作物科学股份公司 | Herbicidal combination comprising dimethoxy-triazinyl-substituted difluoromethane sulfonylanilides |
| CN108719305A (en) * | 2018-06-05 | 2018-11-02 | 广东中迅农科股份有限公司 | Herbicidal combinations containing furans sulphur humulone and fluorine ketone sulphur grass amine and sulfonylurea herbicide |
Non-Patent Citations (1)
| Title |
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| 王慧等: "氟酮磺草胺防除直播水稻田杂草效果试验", 《浙江农业科学》 * |
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Application publication date: 20200605 |