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Wettable powder for preventing and treating sweet potato wilt and preparation method thereof

A wettable powder and fusarium wilt technology, applied in the field of wettable powder and its preparation, can solve the problems of residue and rampant, and achieve the effects of no pesticide residue, low cost, and lightening the burden on farmers

Active Publication Date: 2018-07-13
BEIJING UNION UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the "3R" problem caused by the long-term and large-scale unreasonable use of traditional chemical pesticides, that is, residue, resistance, and rampant, is becoming more and more serious, which has aroused widespread concern in the society.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] ①Weigh 300g of viola, 130g of tobacco, 50g of Pulsatilla chinensis, 25g of cnidium, and 45g of Andrographis paniculata, crush them, add 7000mL of 70% ethanol to the medicinal materials, extract with ultra-high pressure, the extraction pressure is 400MPa, the extraction time is 3min, filter, and repeat the extraction 3 times, remove the solid residue to obtain the extract.

[0038] ② Combine the extracts, concentrate under reduced pressure, ethanol precipitation, and spray-dry to obtain medicinal material extract I.

[0039] ③weighing 80g of berberine and mixing with 20g of medicinal material extract I to obtain active ingredient II;

[0040] ④ Mix active ingredient II 100g with kaolin 600g, sodium tripolyphosphate 60g, pull-off powder 100g, and D06 30g, airflow pulverize, collect the powder after airflow pulverization, pass through a 325 mesh sieve, and repeat the operation until all pass through a 325 mesh sieve. wettable powder.

[0041] ⑤ The suspension rate of the...

Embodiment 2

[0043] ① Weigh 350g of viola, 120g of tobacco, 25g of Pulsatilla chinensis, 30g of cnidium, and 25g of Andrographis paniculata, crush them, add 7000mL of 70% ethanol to the medicinal materials, extract with ultra-high pressure, the extraction pressure is 300MPa, the extraction time is 2min, filter, and repeat the extraction 3 times, remove the solid residue to obtain the extract.

[0044] ② Combine the extracts, concentrate under reduced pressure, ethanol precipitation, and spray-dry to obtain medicinal material extract I.

[0045] ③weighing 70g of berberine and mixing with 30g of medicinal material extract I to obtain active ingredient II;

[0046] ④ Mix active ingredient II 100g with kaolin 660g, calcium lignin sulfonate 70g, sodium dodecylbenzene sulfonate 90g, Darun ProDis Q303 28g, jet mill, collect jet milled powder, pass through a 325 mesh sieve, and The operation is repeated until all of them pass through a 325-mesh sieve to obtain a wettable powder.

[0047] ⑤ The sus...

Embodiment 3

[0049] ① Weigh 400g Viola, 60g Tobacco, 20g Pulsatilla, 45g Cnidium, and 25g Andrographis paniculata, crush them, add 7000mL of 70% ethanol to the medicinal materials, extract with ultra-high pressure, the extraction pressure is 500MPa, the extraction time is 2min, filter, and repeat the extraction 3 times, remove the solid residue to obtain the extract.

[0050] ② Combine the extracts, concentrate under reduced pressure, ethanol precipitation, and spray-dry to obtain medicinal material extract I.

[0051] ③weighing 60g of berberine and mixing with 40g of medicinal material extract I to obtain active ingredient II;

[0052] ④ Mix active ingredient II 100g with activated clay 630g, calcium lignin sulfonate 68g, sodium dodecylbenzene sulfonate 88g, Darun ProDis Q303 25g, airflow pulverization, collect the powder after airflow pulverization, pass through a 325 mesh sieve, This operation is repeated until all of them pass through a 325-mesh sieve to obtain a wettable powder.

[...

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PUM

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Abstract

The invention discloses wettable powder for controlling sweet potato blight and a preparation method of the wettable powder. The wettable powder comprises components in percentage by weight as follows: 5%-15% of an effective ingredient, 40%-75% of a carrier, 5%-15% of a wetting agent, 5%-15% of a dispersant and 1%-7% of a suspending agent, wherein the effective ingredient is a mixture of an ultrahigh-pressure ethanol extract of Philippine violet herbs, tobacco, Chinese pulsatilla roots, common cnidium fruits and common andrographis herbs and berberine. The preparation method comprises steps as follows: (1) the ethanol extract of the Philippine violet herbs, the tobacco, the Chinese pulsatilla roots, the common cnidium fruits and the common andrographis herbs is extracted with the ultrahigh pressure method; (2) the ethanol extract and the berberine are mixed in proportion, and the effective ingredient is obtained; (3) the effective ingredient is mixed with the carrier, the wetting agent, the dispersant and the suspending agent in proportion and subjected to air flow crushing, powder after air flow crushing is collected and filtered by a sieve of 325 meshes, and the wettable powder is obtained. The wettable powder is mixed with fine earth to be scattered on seedbeds or planting furrows, can powerfully inhibit the sweet potato blight, and is non-toxic, free of pesticide residues and environment-friendly.

Description

technical field [0001] The invention relates to a wettable powder for preventing and treating sweet potato wilt and a preparation method thereof, belonging to the fields of agriculture and chemical industry. Background technique [0002] Fusarium wilt of sweet potato Alias: wilt disease, vine cutting disease, vine blight, stem rot and so on. Fusarium oxysporum f.sp.batatas (Wollenweber) Snyder&Hansen) Fusarium bulbigeum Cke.etMass.Var.batatas Wollenw., variety Modong. [0003] Damaged parts: infested stems, tubers. The disease occurs at the seedling stage, and the leaves at the base of the main stem turn yellow and deteriorate first. The stems are injured, the base of the stem is enlarged, ruptured longitudinally, exposing the pith, and the vascular bundles are dark brown when viewed in section, and the cracked parts are fibrous. Diseased potato pedicles often rot. The upper part of the diseased potato is cross-cut, and the vascular bundles are brown spots. The leaves o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N65/38A01N43/90A01N25/14A01P3/00
CPCA01N25/14A01N43/90A01N65/00A01N65/38A01N2300/00Y02A50/30
Inventor 葛喜珍裴庆慧刘杨平王玥
Owner BEIJING UNION UNIVERSITY
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