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Application of dihydrocoumarin to inhibition of seed germination and growth of barnyard grass

A technology of dihydrocoumarin and barnyardgrass, which is applied in the directions of application, herbicides and algicides, plant growth regulators, etc., can solve the problems such as the literature and data on the prevention and control of barnyardgrass has not yet been found.

Active Publication Date: 2021-05-11
HUNAN AGRI BIOTECH RES CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a kind of spice, dihydrocoumarin is often used in food and cosmetics, but there is no literature and related reports on the prevention and control of barnyardgrass

Method used

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  • Application of dihydrocoumarin to inhibition of seed germination and growth of barnyard grass
  • Application of dihydrocoumarin to inhibition of seed germination and growth of barnyard grass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1 Petri dish detection method to measure the influence of dihydrocoumarin on the germination and growth of barnyardgrass seeds

[0024] (1) Breaking dormancy and disinfection of seeds: Treat the collected barnyardgrass seeds with concentrated sulfuric acid for 4-5 minutes, after cleaning, soak them in 3% sodium hypochlorite and 75% ethanol for 1-2 minutes. After the sterilization is completed, rinse with clean water, filter paper to dry the surface moisture, and set aside.

[0025] The germination rate of treated barnyardgrass seeds is higher than 85%.

[0026] (2) Solution preparation: dissolve dihydrocoumarin with a small amount of absolute ethanol, and prepare dihydrocoumarin solutions with concentrations of 1000, 500, 100, 50, 10 and 0 mg / l with pure water.

[0027] (3) Petri dish detection method: pad 2 layers of filter paper in a 9cm disposable petri dish, add 5ml of dihydrocoumarin solutions of different concentrations, put 10 full-grained barnyardgrass ...

Embodiment 2

[0036] Example 2 Pot detection method to determine the effect of dihydrocoumarin on the germination and growth of barnyardgrass seeds

[0037] (1) Breaking dormancy and disinfection of seeds: Treat the collected barnyardgrass seeds with concentrated sulfuric acid for 4-5 minutes, after cleaning, soak them in 3% sodium hypochlorite and 75% ethanol for 1-2 minutes. After the sterilization is completed, rinse with clean water, filter paper to dry the surface moisture, and set aside.

[0038] The germination rate of treated barnyardgrass seeds is higher than 85%.

[0039] (2) Solution preparation: dissolve dihydrocoumarin with a small amount of absolute ethanol, and prepare dihydrocoumarin solutions with concentrations of 2000, 1000, 500, 100, 50 and 0 mg / l with pure water.

[0040] (3) Put 1 / 2 cup of air-dried and sieved field soil in a plastic round basin with a diameter of 8.6 cm and a height of 6 cm, and add enough water to completely soak the field soil for more than 2 hours...

Embodiment 3

[0051] A product for inhibiting germination and growth of barnyardgrass seeds, which includes not only products using dihydrocoumarin alone but also products using dihydrocoumarin as an active ingredient. The product may also include acceptable carriers and auxiliary materials, which include one or more of antioxidants, chelating agents, surfactants, fillers, disintegrants, wetting agents, solvents and pH regulators. The dosage form of the product can be powder, granule, wettable powder, soluble powder, water dispersible granule, water suspension, emulsifiable concentrate, water emulsion, microemulsion, granule, water or tablet. The selection of the above-mentioned carriers, auxiliary materials and dosage forms are all conventional technical means in the art.

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Abstract

The invention belongs to the technical field of herbicidal active substances, and particularly relates to application of dihydrocoumarin to inhibition of seed germination and growth of barnyard grass. According to the method, the influence of the dihydrocoumarin on the germination of the barnyard grass seeds is investigated by taking the germination rate as an index, the influence of the dihydrocoumarin on the growth of the barnyard grass is investigated by taking the seed root length, the seedling length / plant height and the plant fresh weight as indexes, the result shows that the dihydrocoumarin has an inhibiting effect on the seed germination and the growth of the barnyard grass, the inhibition effect is enhanced along with the concentration increase of dihydrocoumarin, and the dihydrocoumarin can effectively inhibit the seed germination and growth of the barnyard grass, can be used for preparing products for inhibiting the seed germination and growth of the barnyard grass, and is low in toxicity to human and livestock, low in residue and good in environmental compatibility.

Description

technical field [0001] The invention belongs to the technical field of herbicidal active substances, and in particular relates to the application of dihydrocoumarin in inhibiting the germination and growth of barnyardgrass seeds. Background technique [0002] Rice is the main food for more than 50% of the world's population. Weeds have a great impact on rice production, and the annual loss is 40-60% of the total loss of rice production. Barnyardgrass is one of the most harmful weeds in rice fields. It is often controlled by chemical herbicides. However, with the long-term use and abuse of chemical herbicides, it has caused a series of problems for agricultural growth, such as pesticide resistance, pesticide residues and crops. Drug hazards and other issues. On the other hand, as more and more people choose organic food, the public's concern about food-related health risks is also increasing, which has led to the need to reduce the dependence on chemical pesticides in agricu...

Claims

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Application Information

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IPC IPC(8): A01N43/16A01P13/02
CPCA01N43/16Y02A40/10
Inventor 柏连阳杨浩娜王立峰邬腊梅李祖任周小毛彭琼邓希乐
Owner HUNAN AGRI BIOTECH RES CENT
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