Herbicide for preventing and removing semen cuscutae

Abstract

The invention relates to a herbicide for preventing and removing semen cuscutae. The herbicide comprises an effective constituent agent A, an effective constituent agent B and an additive as the following matching ratios: the agent A is one of 20-100 parts by volume of efficient haloxyfop-methyl with the mass concentration of 95% and 2.5-12 parts by weight of quizalofop-p-ethyl; the agent B is one of 450-600 parts by weight of coumarin and 500-650 parts by weight of p-coumaric acid; the additive is 150-200 parts by weight of ethoxy modified trisiloxane with the mass concentration of 100%; the parts by weight are calculated by the active compound. The herbicide has a favorable prevention effect on semen cuscutae, has the fatality rate of up to 95%, is low in toxicity, and is safe to human bodies, livestock and water sources.

Description

technical field [0001] The invention relates to a herbicide, in particular to a herbicide for controlling dodder. Background technique [0002] Cuscuta is a malignant parasitic seed plant of the genus Cuscuta in the family Convolvulaceae, mainly parasitic on dicotyledonous plants, and has the characteristics of wide occurrence area, rapid spread, serious damage, and difficulty in control. After the dodder seed germinates and emerges from the soil, once it encounters the host, its roots will die, and the stems will be entwined and adsorbed on the plant body. The leaves will degenerate and lose photosynthesis. It often causes malnutrition and growth inhibition of host plants, manifested as yellowing of leaves, wilting of branches, reduced flowering and seed setting rate, etc. In severe cases, the plants die in pieces, causing huge economic losses. [0003] Control and control of dodder is generally carried out in three stages, one is the seed stage, the other is the seedling ...

AI Technical Summary

Problems solved by technology

Lubao No. 1, which is often mentioned in the literature, created a precedent for the application of microbial herbicides in China. It is non-toxic to humans and animals and easy to grow. It is an effective biological herbicide. However, due to the short shelf life of this product, it has not been industrialized. production; it has been reported in the literature that "glyphosate" is used to control dodder, but the drug is a herbicide that kills, and there is no selectivity between the host and dodder, which are also dicotyledonous plants. When dodder is controlled, the host plant will also produce obvious phytotoxicity; other documents have reported that "Zhongdingling" has inhibitory effect on the cane of dodder, but in actual application, it is still found that the control effect is not ideal, and it only has a slight inhibitory effect on the tender tip of dodder. Increased concentration will cause phytotoxicity to the host

[0010] Chinese patent CN103098798A discloses a herbicide used in soybean fields, which uses the pre-emergence treatment herbicide acetochlor to inhibit the dodder seeds, fomesafen to the dodder seedlings, and the stem and leaf treatment herbicide high-efficiency flupyr Methalofop-pyl and quizalofop-p-ethyl are highly selective herbicides. The high-efficiency haloxyfop-pyl and quizalofop-p-p-p-p select the conventional dosage conditions known to those skilled in the art, and only inhibit the stems and leaves of monocotyledonous plants. effect, almost no effect on the control of dicotyledonous dodder

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