Combined nematicide

A technology of nematicides and nematicides, applied in the direction of nematicides, biocides, biocides, etc., which can solve the problems of soil compaction, soil fertility degradation, less low-toxic nematicides, and unsatisfactory effects, etc., to delay nematodes The speed of drug resistance, environmental friendliness, and the effect of reducing the amount of pesticides in the field

Inactive Publication Date: 2015-08-19
山东科大创业生物有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The prevention and control of nematodes is currently a difficult problem in the world. Over the years, many excellent chemical agents have played an important role, such as dibromochloropropane, fenamiphos, carbofuran, aldicarb and other highly toxic pesticides. As environmental protection requirements are getting higher and higher, the use of these pesticides has been restricted or banned one after another. At present, the control of nematodes in agriculture basically focuses on preventing the invasion of plants by nematodes. After the prohibition of highly toxic pesticides, chemical control is currently limited to abamectin and chlorpyrifos. Several varieties, few low toxicity nematicides to choose from
Iprodione is a low-toxic fungicide, which has good effect on many fungal diseases, and nematodes are often accompanied by soil-borne pathogens. At the same time, soil-borne pathogens and nematode spores are more serious in the plots of heavy cropping for many years, accompanied by soil compaction, Soil degradation and other phenomena, it is found through experiments that iprodione has a certain killing activity on plant nematodes, but the effect of iprodione alone is not ideal, and it is easy to induce resistance of nematodes, which is not conducive to continuous control

Method used

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  • Combined nematicide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Indoor Viability Bioassay

[0029] Toxicity determination of the compound of iprodione, hymexazol, chitosan and Bacillus subtilis against root-knot nematode incognita

[0030] Subject: Meloidogyne incognita

[0031] The evaluation method is the soaking method of medicinal solution. The active ingredient is dissolved by adding an appropriate amount of acetone as required, and then diluted with purified water to 10000ppm as the mother solution of the test solution. 100 microliters were inserted into each well, and then an equal amount of root-knot nematode suspension was added, and kept in a dark place at 25°C for one week, and counted the number of surviving and dead nematodes in each well with a microscope.

[0032] Calculation method of drug efficacy: Mortality rate (%) = number of dead insects / (number of survival + number of dead insects) * 100%

[0033] The expected efficacy (theoretical control effect, %) of the mixture of active ingredients is compared with the...

Embodiment 2

[0047] Mix the active ingredient, wetting and dispersing agent, thickener, carrier and water according to the ratio of the formula

[0048] Homogeneous, suspension concentrate obtained after grinding and / or high-speed shearing.

[0049] 20% Iprodione Hymexazol Suspension Concentrate (10%+10%)

[0050]Proportion: iprodione 10%, hymexazol 10%, trace elements 2%, magnesium aluminum silicate 3%, sodium salicylate 0.3%, dispersant NNO 3.5%, ethylene glycol 5%, wetting agent 0.8%, suspension aid 0.2%, xanthan gum 0.2%, and the rest is water.

[0051] Apply this example to the prevention and treatment of cucumber root-knot nematode, dilute 20% iprodione hymexazol suspension concentrate with water according to the amount of 1200g a.l. / ha (g a.l. / ha refers to the amount of active ingredients per hectare, the same below) Pouring along furrows and ridges, the control effects of 10 days and 20 days after use are 82.5% and 88.3%, respectively. 25% iprodione suspension was used at 1200g ...

Embodiment 3

[0053] 8% Iprodione Hymexazol Granules (3%+5%)

[0054] Mix active components, trace elements, carriers and water evenly, extrude and granulate, dry and sieve.

[0055] Formula: iprodione 3%, hymexazol 5%, binder 1%, coloring agent 0.5%, dispersant 0.5%, trace elements 5%, kaolin supplemented to 100%, this example is applied to control sweet potato root knot For nematodes, apply 8% iprodione·hymexazol granules at 3600 g·a.l. / ha to that furrow, and the control effects are 91.9% and 88.7% at 10 days and 20 days after application, respectively, and 5% foreign bacteria Urea granules are used at 3600 g·a.l. / ha, 10% hymexazol granules are used at 3600 g·a.l. / ha in the same way, and the control effects of 5% iprodione granules at 10 days and 20 days after the drug are 67.1 % and 61.3, the control effects of 10% hymexazol granule were 70.6 and 72.4 after 10 days and 20 days respectively, so there is obvious synergism after the courseware is compounded, and the control effect on sweet...

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PUM

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Abstract

The present invention relates to a pesticide, in particular to a combined nematicide. The combined nematicide contains effective ingredients and auxiliaries. The effective ingredients comprise iprodione and active ingredients, wherein the active ingredients comprise hymexazol, chitosan or Bacillus subtilis. The weight percentage of the effective ingredients in the total weight of nematicide compositions is 1-90%. The mixed preparation has an obvious pesticidal synergistic effect for root-knot nematode, is widely applied to planting fields such as vegetables, grains, woods and commercial crops, and can solve the problem of resistance caused by single use of iprodione.

Description

technical field [0001] The present invention relates to an insecticide, in particular to a nematicide combination preparation. Background technique [0002] Root-knot nematode (Meloidogyne) is a highly specialized omnivorous plant pathogenic nematode. Nematodes that are known to damage vegetables mainly include root-knot nematode high pedicle, root-knot nematode peanut, root-knot nematode northern, root-knot nematode southern, root-knot nematode java, and root-knot nematode beet. Nematodes have a wide range of hosts and often damage more than 30 kinds of vegetables such as melons, solanaceous fruits, beans, radishes, carrots, lettuce, and cabbage, and can also spread some fungal and bacterial hazards. [0003] The prevention and control of nematodes is currently a difficult problem in the world. Over the years, many excellent chemical agents have played an important role, such as dibromochloropropane, fenamiphos, carbofuran, aldicarb and other highly toxic pesticides. As e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N63/00A01N47/38A01P5/00C05G3/02A01N43/80C05G3/60
Inventor 陈建军
Owner 山东科大创业生物有限公司
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