Purple stem boneset extract for prevention and treatment of plant disease
A technology for preventing and controlling plant diseases and Echinacea, which is applied in the field of extraction and application of botanical pesticides to achieve good environmental and ecological benefits, low prevention and control costs, and good control effects.
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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]
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