54 results about "Hexazinone" patented technology

The invention discloses sugarcane field herbicide for low-volume spraying. The herbicide is in a form of a suspending agent; the pesticide ingredients include ametryn and herbicide II, wherein the herbicide II is prepared from one or combination of two of agroxone, diuron, hexazinone, tebuthiuron, halosulfuron-methyl, trifloxysulfuron, mesotrione or topramezone. According to the sugarcane field herbicide for low-volume spraying, ametryn and the herbicide II are mixed in a certain ratio and have synergistic effect on removing weeds of a sugarcane field, and the prevention and treatment effect is obviously superior to that of single agent; meanwhile, the herbicide can be prepared into the suspending agent for low-volume spraying, and therefore, the drift possibility can be obviously reduced, and the wetting and spreading performances of the components of pesticides can be improved; the herbicide also has the advantages of labor saving, water saving, drug saving, high in efficiency, long acting, environmental protection, and low in cost; the labor intensity can be greatly alleviated; the manual drug applying efficiency is improved, the labor can be greatly released, the agricultural production cost can be reduced, and the modern level of weeding the sugarcane field can be increased.

The invention discloses an herbicide composition containing hexazinone and phenoxy carboxylic acid. The herbicide composition comprises the active ingredients formed by mixing the hexazinone and any one selected from 2-4 drops salt and ester thereof, 2-4 drops propionate and ester thereof, 2-4 drops butyrate and ester thereof, bimethyl tetrachloro salt and ester thereof, bimethyl tetrachloro propionate and ester thereof, bimethyl tetrachloro butyrate or clomeprop in phenoxy carboxylic acid, wherein the weight percent of the hexazinone is 1 to 70 percent; the weight percent of the phenoxy carboxylic acid is 1 to 70 percent; and the weight ratio of the hexazinone to the phenoxy carboxylic acid is (1:20)-(19:20) or (20:19)-(20:1). The herbicide composition is used for controlling weeds in gardens, forests, sugarcane fields or wastelands, the prevention effect is obviously improved compared with single dose, and the dosage of the pesticides can be reduced, so that the dosage cost is reduced, and the adverse effect of the pesticides on the environment is lightened; and moreover, the service life of each single dose can be prolonged, the application spectrum is widened, and the herbicide composition has great significance in overall management of the resistance of the pesticides.

The invention discloses a system and method for synthesizing hexazinone by continuous pipeline reactions, and relates to the hexazinone synthetic method field. The system includes a first solution tank, a first material transferring pump, a filter, a shell-and-tube heat exchanger, a pipeline reactor, a second solution tank, a second material transferring pump, an evaporator, a neutralization washing kettle, a third material transferring pump, a condenser, and a removed solvent receiving tank; the first solution tank is connected to the first material transferring pump through a pipeline; the first material transferring pump is connected to the filter through a pipeline; the filter is connected to the shell-and-tube heat exchanger through a pipeline; the shell-and-tube heat exchanger is connected to the pipeline reactor through a pipeline; the second solution tank is connected to the second material transferring pump through a pipeline; the second material transferring pump is connectedto the pipeline reactor through a pipeline; the pipeline reactor is connected to the evaporator through a pipeline; the evaporator is connected to the neutralization washing kettle through a pipeline; the third material transferring pump is connected to the neutralization washing kettle through a pipeline; the condenser is connected to the evaporator through a pipeline; and the removed solvent receiving tank is connected to the condenser through a pipeline.

The invention relates to preparation of a hexazinone granule and an application technology. The prepared hexazinone granule can be used and transported conveniently and can be applied to weeding for forests, nurture young forests, clear obstacles and weed in places of airports, railways, industrial areas, and the like. Meanwhile, the hexazinone granule can also be applied to weeding in fields of economic crops such as bananas, sugarcanes, and the like.

A mixture of diuron with topramezone optionally containing other herbicides such hexazinone is disclosed as useful for controlling undesired vegetation. Also disclosed is a herbicidal composition comprising diuron, topramezone and optionally other herbicides such as hexazinone and at least one additional component selected from the group consisting of surfactants, solid diluents and liquid diluents. Further disclosed is a method of controlling undesired vegetation comprising applying to the locus of the vegetation a herbicidally effective amount of the mixture.

In order to solve the problems of side reaction and difficulty in inhibiting side reaction in the existing weedicide hexazinone preparation method, the invention discloses a new hexazinone preparation method which comprises the following steps: 1. reacting guanidine and cyclohexylamine so that the ester group on the guanidine is aminolyzed to generate an intermediate guanido urea; 2. reacting the intermediate guanido urea with phosgene under the action of an acid-binding agent so that the intermediate guanido urea is cyclized to generate hexazinone; and 3. cooling the mixture obtained in the step 2 to room temperature, carrying out vacuum filtration, washing, washing the mother solution with water, desolventizing under reduced pressure, adding petroleum ether to crystallize, filtering and drying to obtain the hexazinone crystal. The preparation method has the advantages of simple steps, no side reaction, high yield and low cost, and can obtain the high-purity hexazinone.

The invention belongs to a modified weeding composition as well as a preparation method and an application thereof. The modified weeding composition is a mixture of a compound (A) and diuron, effectively removes annual gramineous weeds and broadleaf weeds in cane fields, has higher prevention effect than singly using the single compound (A) or compound (B) and greatly reduces the consumption of various active substances.

A herbicidal composition containing hexazinone and an alkylene carbonate.

The invention relates to a paraquat and hexazinone weeding composition and an application thereof, and belongs to the field of pesticide. The weeding composition consists of paraquat and hexazinone, wherein the mass ratio of paraquat to hexazinone is (1-30):(20-60). According to the weeding composition, paraquat and hexazinone within a specific proportioning range are compounded, so that the resistance of partial weeds to paraquat is reduced, and remarkable synergism effect after compounding is achieved. According to the weeding composition, the use amount of paraquat is reduced, and by adopting non-water formulations such as soluble powder, wettable powder and water dispersing granule, the security in dosage is greatly improved. The weeding composition provided by the invention can be applied to no-tillage land weeding in bare places, frosts, fruit gardens and lands for dry crops such as soybean, wheat, rape and corn, or weeding in line intervals of corn and sugarcane seedlings. The invention further provides a preparation method of the wettable powder, the soluble powder, the water dispersing granule and suspension of the paraquat and hexazinone weeding composition.

The present invention is a method for transforming macadamia nut forests in eucalyptus forests. Holes are drilled in eucalyptus stumps. After the eucalyptus stumps grow new branches and leaves, paraquat is sprayed. The green tissue of new branches and leaves quickly absorbs paraquat to make them die, and then sprays them on the eucalyptus stumps. Hexazinone, which leads to its metabolic disorder, can effectively kill eucalyptus stumps under the dual effects of paraquat and hexazinone; using urea and table salt as corrosive agents will lead to excessive concentrations of urea and salt in eucalyptus stumps and their roots , destroy the protein structure, and make the eucalyptus stump and its root system under the conditions of high salt, high ammonia and strong alkali, further burn and poison the eucalyptus stump, and accelerate the decay of the eucalyptus stump and its root system; then add a decay accelerator , to further interfere with the protein synthesis of eucalyptus stumps, and at the same time promote the rot and deterioration of eucalyptus stumps and their root systems; reasonable application of compound fertilizers and foliar fertilizers to planted macadamia nut trees can effectively prevent premature aging of macadamia nut trees.