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A kind of rice field herbicidal composition

A herbicidal composition and paddy field technology, applied in the field of pesticides, can solve the problems of weed death and rot, and achieve the effect of expanding the weed killing spectrum

Active Publication Date: 2018-12-28
GUANGDONG ZHONGXUN AGRI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is especially sensitive to weeds in the germination stage. When the weeds germinate, the growth of the bud sheaths is inhibited, and their tissues rot rapidly, and the weeds die; as the weeds grow, the efficacy of the drug decreases, and it is basically ineffective against grown weeds

Method used

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  • A kind of rice field herbicidal composition
  • A kind of rice field herbicidal composition
  • A kind of rice field herbicidal composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: Indoor toxicity determination of tembotrione, oxadiazone or propargyl oxadiazone and their compound against barnyardgrass (Echinochloacrusgalli, ECHCR), dwarf arrowhead (Sagittaria pygmaea, SAGPY), firefly (Scirpus juncoides, SCIJU) test.

[0036]Table 1. Control results of ECHCR, SAGPY, and SCIJU at bud stage in greenhouse by tembotrione, oxadiazone propargyl and their compound 15 days after drug application.

[0037]

[0038]

[0039] The combination of herbicides was evaluated according to the Colby method. The data in Table 1 show that the binary combination of tembotrione and propargyl oxadiazone is effective against barnyardgrass (Echinochloa crusgalli, ECHCR), dwarf arrowhead (Sagittaria pygmaea, SAGPY), firefly (Scirpus juncoides , SCIJU) significant synergistic effect, E-E 0 The values ​​are all greater than 20%.

[0040] Table 2, tembotrione, oxadiazone and their compound paired barnyardgrass in bud stage in greenhouse 15 days after drug app...

Embodiment 2

[0045] Embodiment 2: (Tepitrione·oxadiazone water-dispersible granule).

[0046]

[0047] Put the above materials together into the conical mixer and mix them evenly, and then crush them through the jet mill, and then mix the crushed materials through the conical mixer. Knead into a plastic material, and finally put the material into an extrusion granulator to extrude and granulate. After granulation, it is dried and sieved to obtain the corresponding weight percentage of tembotrione·oxadiazone water-dispersible granules.

Embodiment 3

[0048] Embodiment 3: (Tebitrione·propargyl oxadiazone water-dispersible granule).

[0049]

[0050]

[0051] Put the above materials together into the conical mixer and mix them evenly, and then crush them through the jet mill, and then mix the crushed materials through the conical mixer. Knead into a plastic material, and finally put the material into an extrusion granulator to extrude and granulate. After granulation, dry and sieve to obtain the corresponding weight percentage of tembotrione·propargyl oxadiazone water dispersible granules agent.

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PUM

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Abstract

The invention discloses weeding composition for paddy fields. The composition comprises an active ingredient a, an active ingredient b and a proper pesticide adjuvant, wherein the active ingredient a is tembotrione, and the active ingredient b is one of oxadiazon and oxadiargyl; the mass part ratio of the active ingredient a to the active ingredient b is 1:30-30:1, and the sum of the mass of the active ingredient a and the active ingredient b accounts for 5%-8% of the mass percentage of the weeding composition; according to application requirements, dosage forms of suspensions, oil suspensions, water dispersible granules, wettable powder and the like can be prepared from the composition, the composition can be used for preventing and killing off paddy field annual weeds, especially those taking barnyard grass, sagittaria pygmaea and Scirpus juncoides Roxb as dominant weeds, control effects are obviously better than those of various single dosages, the dosage is decreased, and the drug resistance of the weeds is delayed.

Description

technical field [0001] The invention belongs to the technical field of pesticides, and in particular relates to a paddy field herbicidal composition, which is suitable for controlling annual weeds in paddy fields, especially barnyardgrass (Echinochloa crusgalli), dwarf arrowhead (Sagittaria pygmaea) and firefly (Scirpus juncoides) Dominant weeds are annual weeds in rice fields. Background technique [0002] Tembotrione is a triketone selective herbicide, which can effectively control the main broad-leaved grasses and some grass weeds, such as velvetleum, amaranth, quinoa, Polygonum, barnyardgrass, crabgrass, etc. Good control effect, can be used for pre-emergence sealing treatment and post-emergence stem and leaf treatment. [0003] Oxadiazon is used to control a variety of annual monocotyledonous and dicotyledonous weeds. It is mainly used for weeding in paddy fields. It works through the absorption of weed buds and stems and leaves. It can play a good role in the presence...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N43/824A01P13/00A01N41/10
Inventor 王礼文朱刚吴泽伟张志伟陈佛祥
Owner GUANGDONG ZHONGXUN AGRI TECH
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