Composite herbicide containing fine fenoxaprop, fomesafen and bentazone and its application
A technology of fenoxaprop-ethyl and compound herbicide, which is applied in the field of compound herbicides, can solve the problems of incomplete and effective control of weeds in soybean fields, short time suitable for application, limited herbicidal spectrum, etc., and the speed of reaching is reduced , Improve drug efficacy, broad-spectrum herbicide effect
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Embodiment 1
[0047] Embodiment 1: compound herbicide and water emulsion thereof
[0048] 1. Composition (mass percentage): fenoxaprop-ethyl 15%, fomesafen 15%, bentazone 20%, castor oil polyoxyethylene ether 8%, alkylphenol polyoxyethylene ether 10%, Xylene 5%, ethylene glycol 1%, water make up to 100%.
[0049] 2. Preparation method: Mix and stir the mixture obtained from the above components, high-speed shear, and filter to obtain 50% fenoxaprop-ethyl, fomezafen, and bentazone aqueous emulsion with an average particle size of about 4 μm product.
Embodiment 2-4
[0050] Embodiment 2-4: compound herbicide and water emulsion thereof
[0051] Can prepare following composition suspending agent of different content by the similar method of embodiment 1, and concrete prescription sees table 1.
[0052] Table 1: Example 2 - 4 The formula of compound herbicide and water emulsion thereof
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[0054]
experiment example 1
[0055] Experimental Example 1: Indoor Activity Determination Test
[0056] Utilize the preparation in the example, measure its co-toxicity coefficient to common weed crabgrass in soybean field.
[0057] 1. Experimental grouping: commercially available medicament 18.5% Jinge·Benzazone wettable powder, 48% fomesafen aqueous solution; Examples 1-4; and Example 1 in CN201110368499.8 (publication number is CN102405916A) (named control group 1).
[0058] 2. Experimental method: Soak the tested seeds in warm water at 40°C to accelerate germination, and sow the seeds after the seeds are white. Sow the pretreated crabgrass seeds evenly on the surface of the soil, cover with 0.5cm of soil, move them into the greenhouse for routine cultivation after sowing, and use pot bottom seepage irrigation to make the soil completely moist. Cultivate in the greenhouse for 10 hours, thinn the seedlings and set the plants 10 days after sowing, so that the density of weeds is 20 plants / pot, and spray...
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