3 results about "Defoliant" patented technology

This invention relates to a spraying device for defoliants on edible sunflowers and its usage method. The device includes a drone body with a liquid tank in the center. An annular plate is vertically movable along the outer wall of the drone body, and a windbreak plate is slidably connected to the side wall of the annular plate. A first spray pipe is fixedly mounted at the center of the bottom of the drone body. Second spray pipes are rotatably connected to both ends of the first spray pipe, and the other end of each second spray pipe is rotatably connected to vertical plates on both sides of the bottom of the drone body. The rotation of the second spray pipes is synchronized with the raising and lowering of the windbreak plate. Atomizing nozzles are fixedly mounted at the bottom of both the first and second spray pipes. This invention forms a vertical air curtain through the windbreak plate, providing a stable falling environment for the droplets and effectively preventing drift. The inclined spraying of the atomizing nozzles on both sides makes the liquid distribution more uniform and widens the effective coverage area, ensuring that the entire row of crops receives sufficient liquid from the center to the edge, eliminating missed spraying along the row edges, and improving the spraying effect.

The application provides a cotton defoliant containing a fluorine-containing thidiazuron derivative, and belongs to the technical field of plant growth regulators. The structural formula of the fluorine-containing thidiazuron derivative is as follows: wherein R is a benzene ring containing 0-5 fluorine atoms at any position. The defoliant can effectively reduce the use temperature of the defoliant, eliminate the phenomenon of withering but not falling after the defoliant is applied, and ensure the yield and quality of cotton.

The invention relates to aqueous compositions of agricultural chemicals stabilized against microbial infestation, comprising the following components: (a) 1 to 90 wt. % of at least one agricultural chemical selected from the group consisting of chemical pesticides, herbicides, plant growth regulators, fertilizers and nutrients, gamete killers, defoliants, desiccants and mixtures thereof, (b) water and (c) 0.1 to 1.5 wt. % guanidine and / or at least one salt of guanidine, wherein the proportion by weight refers to the content of guanidine in the entire composition.