6 results about "Pyrethrum extract" patented technology

This invention discloses a pesticide composition for controlling guava nematodes and its preparation method, belonging to the field of pesticide technology. By weight, the raw materials of the pesticide composition include the following components: 8-12 parts of neem seed extract, 8-12 parts of pyrethrum extract, 5-8 parts of tongkat ali extract, 5-8 parts of croton fruit peel extract, 5-8 parts of guava leaf extract, 20-25 parts of compound microbial agent, 3-5 parts of sodium lignosulfonate, 5-8 parts of xanthan gum, 4-6 parts of trehalose, and 80-100 parts of water. The above components work synergistically to achieve excellent control of guava nematodes.

The present invention relates to a solution for controlling ectoparasites in fish by means of dipping tanks that comprises the combination of Pyrethrum extract and a saponin, and / or at least one additional natural extract. The present invention further relates to related uses, methods and procedures.

To provide a pest control agent that has sufficient storage stability and does not cause the problems of stickiness and contamination on the usage scene.SOLUTION: A pest control agent contains the following components (A)-(D): (A) pyrethrum extract, (B) polyoxyethylene hardened castor oil, (C) a specific ester surfactant, and (D) water. The mixture ratio of the components (B) and (C) is 50:50-95:5 in weight ratio.SELECTED DRAWING: None

The preparation method comprises the following steps: dissolving a pyrethrum extract, dehydroacetic acid, aromatic carbonate, diphenyl ether and sodium hypophosphite in water to prepare an acarus-killing finishing liquid, and treating a brocade / cotton blended fabric by a dipping adsorption-baking method to prepare the lasting acarus-killing coating brocade / cotton blended fabric.

The invention relates to the technical field of pyrethrum extraction, and discloses a pyrethrum extraction liquid concentrator which comprises a crawler-type soft start structure and an eccentric vibration structure, and an eccentric column which is located in the axial center of a concentration cavity and rotates along with a crawler belt is arranged in the eccentric vibration structure; and the energy-absorbing closed butt joint structure is internally provided with a semispherical buffer cushion for elastically closing the eccentric vibration structure. According to the pyrethrum extraction liquid concentrator, the vibration effect is generated in the center of concentrated liquid by using the rod body which vibrates at high frequency, and the vibration effect can reduce the resistance of bubbles when the bubbles flow in the liquid, so that the time required by bubble diffusion is shortened, and the efficiency of the pyrethrum extraction liquid during concentration is improved; according to the device, the effective vibration of the rod body is realized while the air tightness of the concentration cavity is ensured, so that the smooth proceeding of the concentration work is ensured, the liquid steam diffusion phenomenon is prevented, and the maximum utilization of the pyrethrum extraction liquid is realized.

The invention provides a biological compound preparation for preventing and controlling nematodes as well as a preparation method and application of the biological compound preparation. The biological compound preparation is prepared from the following components in parts by weight: 50 to 90 parts of oligosaccharide extracting solution, 15 to 35 parts of first plant extract and 15 to 35 parts of second plant extract, the first plant extract comprises any one or a combination of at least two of a pyrethrum extract, a garlic extract, a turmeric extract or a lavender extract; the second plant extract comprises any one or a combination of at least two of a marigold extract, a mugwort extract, a derris extract or a mint extract. The biological compound preparation prepared by utilizing the principle of natural biological defense lines in the nature has an excellent nematode control effect, the components are safe and pollution-free, and drug resistance is not generated; meanwhile, required nutritional ingredients are further provided for the plants, the growth of the plants is promoted, and the disease resistance of the plants is improved.