S-metolachlor and imazapic microcapsule suspending agent, and preparation method and applications thereof

A technology of metolachlor sperm and microcapsule suspending agent is applied in the field of pesticide herbicides, which can solve the problems of long residual effect period, reduced yield, easy damage to subsequent crops, etc. Effect

Inactive Publication Date: 2018-09-14
SHANDONG PEANUT RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the drug has a long residual effect in the soil, and if the dosage is high, its residual amount in the soil is likely to damage subsequent crops, resulting in different degrees of production reduction

Method used

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  • S-metolachlor and imazapic microcapsule suspending agent, and preparation method and applications thereof
  • S-metolachlor and imazapic microcapsule suspending agent, and preparation method and applications thereof
  • S-metolachlor and imazapic microcapsule suspending agent, and preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1. 113g / L refined metolachlor-methazepam microcapsule suspension

[0037] Put 1.3g of methazepam in 20mL of deionized water at room temperature, then stir, and titrate with 1mol / L NaOH until the methazepam is completely dissolved; dissolve 1g of calcium lignosulfonate in 50mL of deionized water to obtain an aqueous phase; Add 10g of refined metolachlor crude oil into the water phase, shear at 10,000 rpm for 30 minutes to obtain an O / W emulsion; place the emulsion on a magnetic stirrer at 600 rpm, and slowly add 1mL of FeCl 3 (0.18mol / L), so that Fe 3+ Complex with calcium lignosulfonate distributed on the oil / water interface to obtain a suspension; slowly add 1 mL of tannic acid TA (0.03 mol / L) to the suspension, and react at 600 rpm for 3 minutes to make TA with Fe 3+ Formation of stable TA-Fe wrapped with refined metolachlor 3+ Complex capsule wall; then centrifuge at 2000 rpm for 30 seconds, discard the supernatant, make up with deionized water and resuspe...

Embodiment 2

[0038] Example 2. 226g / L refined metolachlor-methazepam microcapsule suspension

[0039] Add 2.6g of methazopyr to 20mL of deionized water at room temperature, then stir, and titrate with 1mol / L NaOH until the methazopyr is completely dissolved; dissolve 2g of calcium lignosulfonate in 50mL of deionized water to obtain the water phase, and 20g of refined metolachlor crude oil was added to the water phase, cut at 10,000 rpm for 30 minutes, the subsequent process was the same as in Example 1, and finally made up to 100mL with deionized water to form 226g / L refined metolachlor-methimazole Nicotinic acid microcapsule suspension.

Embodiment 3

[0040] Example 3. 339g / L refined metolachlor-methazepam microcapsule suspension

[0041] Add 3.9g of methazopyr to 20mL of deionized water at room temperature, then stir, and titrate with 1mol / L NaOH until the methazopyr is completely dissolved; dissolve 2g of calcium lignosulfonate in 50mL of deionized water to obtain the water phase, and 30g of refined metolachlor crude oil was added to the water phase, cut at 10,000 rpm for 30 minutes, the subsequent process was the same as in Example 1, and finally made up to 100mL with deionized water to form 339g / L refined metolachlor methimazole Nicotinic acid microcapsule suspension.

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Abstract

The invention discloses an S-metolachlor and imazapic microcapsule suspending agent, and a preparation method and applications thereof, and belongs to the field of pesticide herbicide. According to the S-metolachlor and imazapic microcapsule suspending agent, FeCl3*6H2O and tannic acid are taken as capsule wall materials, coordination assembling is adopted for form hard capsule walls on the surface of liquid original oil, and an auxiliary agent is added so as to obtain a finished product; wherein S-metolachlor is taken as a capsule core material, and imazapic is dissolved in a water phase as awater soluble component. Soil treatment quick effect performance is not influenced by the S-metolachlor and imazapic microcapsule suspending agent, and the S-metolachlor and imazapic microcapsule suspending agent is capable of prolonging weed control period.

Description

technical field [0001] The invention relates to the field of pesticide herbicides, in particular to a microcapsule suspension of refined metolachlor and imazethapyr, its preparation method and application. Background technique [0002] The use of herbicides to control weeds is the most economical and effective means of weed control in farmland. At present, most of the herbicides on the market for soil treatment of peanut fields last for about one month. Therefore, the management method of "one seal and one kill" is generally adopted, that is, soil treatment is performed once in the early stage, and stems and leaves are treated again later. Weeding twice not only increases the production cost, but also increases the difficulty of stem and leaf treatment due to the inconsistent emergence of weeds after emergence, and the weeding effect cannot be guaranteed sometimes. Seeking a herbicide with high efficiency, low toxicity, long-lasting effect, easy to use, and no pollution to...

Claims

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Application Information

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IPC IPC(8): A01N37/22A01N43/50A01N25/28A01P13/00B01J13/20
CPCA01N25/28A01N37/22A01N43/50B01J13/206
Inventor杜龙曲明静鞠倩姜晓静李晓石程仁曲春娟
OwnerSHANDONG PEANUT RES INST