4 results about "Pyrifluquinazon" patented technology

The present disclosure relates to a method of controlling whiteflies and other sucking pests, that are known to be resistance against conventional insecticides, by feeding blocker aqueous insecticidal composition comprising: an agrochemically effective amount of Pyrifluquinazon and an agrochemically effective amount of Flonicamid. The present invention also relates to a process for preparing the said composition and its use for crops.

This invention primarily relates to herbicide conjugates comprising (i) bensulfuron, (ii) pyrifluquinazon, and (iii) bensulfuron-methyl, and compositions comprising said herbicide conjugates. The invention further relates to a method for preparing said herbicide conjugates and compositions. The invention also relates to the use of said herbicide conjugates and compositions in agriculture and for the control of harmful plants.

This invention relates to the field of pesticide residue detection technology, and provides a method for detecting fluoride herbicide residues in fruits and vegetables, aiming to solve the technical defects of existing detection methods, such as poor selectivity and insufficient sensitivity of adsorbents for fluoride-containing pesticides. This method uses HFIP functionalized adsorbent as a solid-phase extraction packing material. After activation, sample extraction, salting-out centrifugation, pH adjustment, sample loading, rinsing, and elution, quantitative detection is achieved using ultra-high performance liquid chromatography-tandem mass spectrometry. This invention modifies HFIP, utilizing fluorine-fluorine interactions, hydrogen bonds, and hydrophobic interactions to synergistically enhance the specific adsorption of fluoride-containing herbicides, solving the problems of poor selectivity and insufficient sensitivity of traditional adsorbents. This method is simple to operate, has high enrichment efficiency, good recovery and repeatability, and a low detection limit, making it suitable for rapid and accurate quantitative detection of fluoride herbicide residues such as flufenacet, fluthiamethoxam, pyrifluquinazon, and flufenacet in cucumbers and other fruits and vegetables.

The invention belongs to the field of compound preparation, and particularly relates to a method for preparing pyridinopyranine by using marine fungi GHQ-208. The invention discloses a preparation method for producing mixed-source terpenoids on the basis of fungi Penicillium sp. GHQ-208 (the preservation number is CCTCC NO: M 2025229) derived from mangrove forest bottom mud in Hainan province, and application of the mixed-source terpenoids as a green insecticide. The preparation process of the compound comprises the following steps: firstly, carrying out fermentation culture on a preserved strain GHQ-208 to obtain a metabolite, and then carrying out multi-step separation and purification processes, including silica gel column chromatography, reverse ODS silica gel column chromatography, LH-20 gel column chromatography and chromatographic separation technologies such as analysis and semi-preparative HPLC (High Performance Liquid Chromatography). A novel biological source insecticidal compound which is novel in structure, unique in action mechanism and environmentally friendly is developed from secondary metabolites of marine fungi, and a new candidate substance is provided for research and development of green pesticides.