Purple stem boneset extract for prevention and treatment of plant disease

Abstract

The present invention relates to plant disease prevention and control with plant extract, and is especially purplestem eupatorium extract for plant disease prevention and control. The n-hexane and petroleum ether extract of purplestem eupatorium has high inhibiting activity on the pathogenic bacteria causing foot rot of broad bean, early blight of tomato, rice blast and pear scab. The purplestem eupatorium extract may be used to prepare germicide with other natural plant extracts, and the germicide has excellent prevention and control effect on plant diseases. The present invention utilizes purplestem eupatorium extract in preventing and controlling plant diseases for the first time.

Description

technical field

[0001] The invention relates to the use of Eupatorium adenophorum extract for plant disease prevention and treatment, and belongs to the extraction and application of botanical pesticides. Background technique

[0002] Eupatouium adenophorum (Eupatouium adenophorum) English name Crofton weed or Pamakani, also known as destruction grass, aircraft grass, liberation grass, etc., is a perennial herbaceous plant of the genus Eupatouium adenophorum. Eupatorium adenophorum has the characteristics of wide ecological adaptability, fast growth, strong fecundity, high gregariousness, strong encroachment and stress resistance, and large consumption of soil fertility. The single-excellent plant community causes many plants to grow slowly, some species are even on the verge of extinction, and large-scale production reductions such as grain and high-quality forage are caused. It is a worldwide malignant weed.

[0003] Regarding the control of Eupatorium adenophorum, physic...

Examples

Embodiment 1

[0016] Take out 1 kg of Eupatorium adenophorum stems without roots, leaves, and flowers and dry them in an oven at 40° C. for 5 hours, grind them with a plant pulverizer, add n-hexane with a mass-volume ratio of 1:2, soak and extract 3 times, and filter to remove slag. The extraction time is 5 hours, and the extraction temperature is 20°C. Concentrate the filtered extract at a temperature of 30°C to directly obtain the n-hexane extract of Eupatorium adenophorum stem.

[0017]

Embodiment 2

[0019] Take out 1 kg of Eupatorium adenophorum stems without roots, leaves, and flowers and dry them in an oven at 55° C. for 24 hours. After pulverizing with a plant pulverizer, add n-hexane with a mass-volume ratio of 1:4, soak and extract 3 times, filter and remove slag. The extraction time is 24 hours, and the extraction temperature is 40°C. Concentrate the filtered extract at a temperature of 45° C. to directly obtain the n-hexane extract of Eupatorium adenophorum stem.

[0020]

Embodiment 3

[0022] Take out 1 kg of Eupatorium adenophorum stems without roots, leaves, and flowers and dry them in an oven at 60° C. for 72 hours. After pulverizing with a plant pulverizer, add n-hexane with a mass-volume ratio of 1:25, soak and extract 3 times, filter and remove slag. The extraction time is 72 hours, and the extraction temperature is 95°C. Concentrate the filtered extract at a temperature of 90°C to directly obtain the n-hexane extract of Eupatorium adenophorum stem.

[0023]

technical field

[0001] The invention relates to the use of Eupatorium adenophorum extract for plant disease prevention and treatment, and belongs to the extraction and application of botanical pesticides. Background technique

[0002] Eupatouium adenophorum (Eupatouium adenophorum) English name Crofton weed or Pamakani, also known as destruction grass, aircraft grass, liberation grass, etc., is a perennial herbaceous plant of the genus Eupatouium adenophorum. Eupatorium adenophorum has the characteristics of wide ecological adaptability, fast growth, strong fecundity, high gregariousness, strong encroachment and stress resistance, and large consumption of soil fertility. The single-excellent plant community causes many plants to grow slowly, some species are even on the verge of extinction, and large-scale production reductions such as grain and high-quality forage are caused. It is a worldwide malignant weed.

[0003] Regarding the control of Eupatorium adenophorum, physic...

Examples

Embodiment 1

[0016] Take out 1 kg of Eupatorium adenophorum stems without roots, leaves, and flowers and dry them in an oven at 40° C. for 5 hours, grind them with a plant pulverizer, add n-hexane with a mass-volume ratio of 1:2, soak and extract 3 times, and filter to remove slag. The extraction time is 5 hours, and the extraction temperature is 20°C. Concentrate the filtered extract at a temperature of 30°C to directly obtain the n-hexane extract of Eupatorium adenophorum stem.

[0017]

Embodiment 2

[0019] Take out 1 kg of Eupatorium adenophorum stems without roots, leaves, and flowers and dry them in an oven at 55° C. for 24 hours. After pulverizing with a plant pulverizer, add n-hexane with a mass-volume ratio of 1:4, soak and extract 3 times, filter and remove slag. The extraction time is 24 hours, and the extraction temperature is 40°C. Concentrate the filtered extract at a temperature of 45° C. to directly obtain the n-hexane extract of Eupatorium adenophorum stem.

[0020]

Embodiment 3

[0022] Take out 1 kg of Eupatorium adenophorum stems without roots, leaves, and flowers and dry them in an oven at 60° C. for 72 hours. After pulverizing with a plant pulverizer, add n-hexane with a mass-volume ratio of 1:25, soak and extract 3 times, filter and remove slag. The extraction time is 72 hours, and the extraction temperature is 95°C. Concentrate the filtered extract at a temperature of 90°C to directly obtain the n-hexane extract of Eupatorium adenophorum stem.

[0023]