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Seed coating agent for preventing and treating cyst nematodes in wheat crops and application thereof

A technology for cyst nematodes and crops, which is applied in the field of crop protection, can solve the problems of poor adhesion, low safety, and short duration of the drug, and achieve the reduction of cyst nematode base and disease index, good adhesion, long-lasting effect

Active Publication Date: 2011-11-23
GANSU AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dithiocyanomethane EC seed dressing prepared by it has a good control effect on rice bakanae disease, dry point nematode disease, barley stripe disease, net spot disease, and hard smut, but there are generally low safety and pesticides. Disadvantages such as poor adhesion and short duration
The use of dithiocyanomethane seed coating agent to control wheat crop cyst nematodes has not been reported at home and abroad

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) According to the weight ratio, weigh each raw material:

[0040] Dithiocyanomethane 0.5%

[0041] Growth regulator 0.05%

[0042] Dispersant 3%

[0043] Anticaking agent 2%

[0044] Suspending agent 1.5%

[0045] Film former 2%

[0046] Filler 10%

[0047] Preservatives 1%

[0048] Colorant 3%

[0049] Water 76.95%.

[0050] Among them, dithiocyanomethane is the original drug with a content of 90%. The growth regulator is gibberellin. The dispersant is nonylphenol polyoxyethylene ether: alkylphenol polyoxyethylene ether=2:5. The anticaking agent is tricalcium phosphate. The suspending agent is xanthan gum. The film former is polyvinyl alcohol. The filler is bentonite. The preservative is sodium benzoate, and the coloring agent is acid scarlet.

[0051] (2) Add dithiocyanomethane, growth regulator, filler, colorant, anticaking agent and other powder materials into a homogenizer filled with water and mix for 30 minutes, then add dispersant, film forming...

Embodiment 2

[0055]According to weight ratio, weigh each raw material:

[0056] Dithiocyanomethane 0.6%

[0057] Growth regulator 0.06%

[0058] Dispersant 5%

[0059] Anticaking agent 3.6%

[0060] Suspending agent 2%

[0061] Film former 1.5%

[0062] Filler 3%

[0063] Preservatives 1.5%

[0064] Colorant 0.5%

[0065] Water 82.24%.

[0066] Among them, dithiocyanomethane is the original drug with a content of 90%. The growth regulator is gibberellin: ABT5 root powder = 5:1. The dispersant is phenethylphenol polyoxyethylene ether. The anticaking agent is silicon dioxide, and the suspending agent is xanthan gum and polyvinylpyrrolidone in a ratio of 4:1. The film former is polyvinyl acetate. The filler is kaolin and attapulgite clay in a ratio of 1:1. The preservative is industrial grade formaldehyde, and the colorant is acid scarlet.

[0067] The method for preparing seed coating agent with above-mentioned raw material is the same as embodiment 1.

Embodiment 3

[0069] According to weight ratio, weigh each raw material:

[0070] Dithiocyanomethane 1%

[0071] Growth regulator 0.1%

[0072] Dispersant 2.4%

[0073] Anticaking agent 2%

[0074] Suspending agent 1.5%

[0075] Film former 2%

[0076] Filler 7%

[0077] Preservatives 1 %

[0078] Colorant 1%

[0079] Water 82%.

[0080] Among them, dithiocyanomethane is the original drug with a content of 90%. Growth regulators are petroleum accelerants. The dispersant is alkylphenol polyoxyethylene ether. The anticaking agent is sodium aluminosilicate, and the suspending agent is xanthan gum. The film former is polyvinyl alcohol. The filler is attapulgite clay. The preservative is potassium sorbate, and the coloring agent is acid red B.

[0081] The method for preparing seed coating agent with above-mentioned raw material is the same as embodiment 1.

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PUM

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Abstract

The invention discloses a seed coating agent for preventing and treating cyst nematodes in wheat crops. The seed coating agent is characterized in that the raw materials contain methane dithiocyanate. The application method of the seed coating agent is characterized by airing and sowing seeds in natural state after coating seeds with the seed coating agent in an agent / seed ratio of 1:40-60 beforesowing the seeds of the wheat crops. The seed coating agent has the characteristics of safety for growth of the wheat crops, good adhesive property and long persistent period. The seed coating agent has obvious effect on controlling cyst nematodes in the wheat crops, can effectively reduce the base number of cyst nematodes in the fields and the disease index, improve the persistent period of the agent and increase the yield by 10-20% and has the advantages of safety, high efficiency, low toxicity, labor saving and economy.

Description

technical field [0001] The invention relates to a seed coating agent for preventing and treating cyst nematodes of wheat crops and a preparation method thereof. At the same time, the invention also relates to an application method of the seed coating agent, which belongs to the field of crop protection. Background technique [0002] Cyst nematode is an important pathogenic nematode of a variety of cereal crops. It mainly infects the roots of cereal crops and reproduces rapidly, turning the root system of crops into spherical nodules, inhibiting crop growth and affecting yield. It is manifested as yellowing of plants, Decreased tillers, poor growth, reduced seed setting rate, generally 20-30% yield reduction, and severe plots can reach more than 70%. At present, the disease occurs in 40 countries including Australia, Canada, Israel, South Africa, Japan, many European countries, India, North Africa, Morocco, Tunisia, Libya, Pakistan, Iran, Turkey, Algeria, and Saudi Arabia. S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/48A01P5/00A01C1/06
Inventor 李惠霞彭德良赵桂琴侯生英陈书龙
Owner GANSU AGRI UNIV
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