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Herbicide synergist, compound herbicide containing penoxsulam and application of compound herbicide

A penoxsulam and compound herbicide technology, applied in the direction of herbicide and algicide, application, biocide, etc., can solve the problem of no penoxsulam synergistic herbicide synergist, etc., to reduce the production of Risk of drug resistance, maximization of synergistic effect, effect of reducing environmental impact

Pending Publication Date: 2022-04-12
QINGDAO AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently no herbicide synergist with obvious synergistic effect on penoxsulam

Method used

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  • Herbicide synergist, compound herbicide containing penoxsulam and application of compound herbicide
  • Herbicide synergist, compound herbicide containing penoxsulam and application of compound herbicide
  • Herbicide synergist, compound herbicide containing penoxsulam and application of compound herbicide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Embodiment one o-phthalaldehyde, the mensuration of 2,3-dihydroxybenzaldehyde herbicidal activity

[0063] 1. Determination by agar method

[0064] (1) Experimental method:

[0065] The inhibitory effects of o-phthalaldehyde and 2,3-dihydroxybenzaldehyde on the growth of radicle (seed root) and hypocoleoptile (coleoptile) of seedlings of six main farmland weeds were respectively determined by the aforementioned agar method.

[0066] (2) Experimental results and analysis:

[0067] Table 1 The effective medium concentration (EC 50 , mg / L)

[0068]

[0069]

[0070] As can be seen from the results of Table 1, o-phthalaldehyde and 2,3-dihydroxybenzaldehyde have obvious inhibitory activity to the growth of six kinds of weeds (especially radicle (seed root)) tested, wherein Amaranthus retroflexus, sweet sausage, barnyardgrass, and crabgrass have the highest inhibitory activity, and the growth inhibitory activity of Cyperus cyperi and Goosegrass, especially the radic...

Embodiment 2

[0080] Example 2 The herbicidal effect of mixing different concentrations of o-phthalaldehyde and penoxsulam

[0081] 1. Experimental method:

[0082] Configure o-phthalaldehyde (0mg / L, 1.5625mg / L, 3.125mg / L, 6.25mg / L and 12.5mg / L) and penoxsulam (0mg / L, 1.25mg / L, 5mg / L , 20mg / L and 80mg / L) each of five concentrations of reagents, and respectively mixed with each other, and the herbicidal effect of the mixed reagents was measured.

[0083] 2. Experimental results:

[0084] Table 3 The effect of the mixture of o-phthalaldehyde and penoxsulam on the hypocotyl growth of Amaranthus retroflexus seedlings

[0085]

[0086] Note: The data in the table are inhibition rate (%) ± standard error.

[0087] Table 4 Effects of the mixture of o-phthalaldehyde and penoxsulam on the radicle growth of Amaranthus retroflexus seedlings

[0088]

[0089] Note: The data in the table are inhibition rate (%) ± standard error.

[0090]From the results in Table 3 and Table 4, it can be seen ...

Embodiment 3

[0094] Example 3 Determination of Herbicidal Activity of 2,3-Dihydroxybenzaldehyde and Penoxsulam Mixed Treatments

[0095] 1. Experimental method

[0096] (1) p-2,3-dihydroxybenzaldehyde (0, 3.125mg / L, 6.25mg / L, 12.5mg / L and 25mg / L) and penoxsulam (0mg / L, 1.25mg / L, 5mg / L, 20mg / L and 80mg / L) herbicidal effect determination of five concentrations mixed with each other.

[0097] (2) Configure compound herbicides: the mass ratio of penoxsulam to 2,3-dihydroxybenzaldehyde is 14.1:1 (the mass parts of the two agents are 93.3% and 6.7%, respectively), and the treatment is carried out according to the aforementioned agents The serial concentrations of the single agent and the mixed agent listed in the part are processed separately to obtain the respective EC 50 value, and then calculate the co-toxicity coefficient by the aforementioned method.

[0098] 2. Experimental results and analysis:

[0099] Table 6 Effects of mixing 2,3-dihydroxybenzaldehyde and penoxsulam on hypocotyl gr...

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Abstract

The invention discloses a herbicide synergist, a compound herbicide containing penoxsulam and application of the compound herbicide, and the active ingredient of the herbicide synergist comprises o-phthalaldehyde or 2, 3-dihydroxy benzaldehyde. The active ingredients of the compound herbicide containing the penoxsulam comprise o-phthalaldehyde and the penoxsulam, or 2, 3-dihydroxy benzaldehyde and the penoxsulam, and the active ingredients of the compound herbicide containing the penoxsulam comprise o-phthalaldehyde and the penoxsulam. The o-phthalaldehyde or the 2, 3-dihydroxy benzaldehyde has an obvious inhibition effect on a plurality of weeds when independently used, and the two compounds have an obvious synergistic effect on the herbicide penoxsulam and can also obviously reduce the use dosage of the herbicide penoxsulam, so that the influence of the herbicide on the environment is reduced, and the weed resistance of the herbicide is improved. The risk that weeds generate drug resistance to penoxsulam is reduced, and the cost of the pesticide can also be reduced.

Description

technical field [0001] The invention relates to the technical field of herbicides, in particular to a herbicide synergist, a compound herbicide containing penoxsulam and applications thereof. Background technique [0002] As one of the three major agricultural pests, weeds will have a great impact on the growth of crops, which can lead to a serious decline in the yield and quality of agricultural products, or even cause no harvest, and greatly increase labor costs. Since the birth of chemical herbicides in the 1940s, after more than 70 years of development, the use of chemical herbicides to control farmland weeds has become one of the indispensable technical measures in modern agricultural production. [0003] At present, a variety of different chemical herbicides have been developed, and the herbicidal properties of various chemical herbicides are different, and the effects on different weeds are also different. At present, the herbicidal performance of a single chemical h...

Claims

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Application Information

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IPC IPC(8): A01N35/04A01N43/90A01P13/00
Inventor 罗小勇刘乃霞
Owner QINGDAO AGRI UNIV