Herbicidal composition containing trichlopyr and pyribenzoxim and application of herbicidal composition

A technology of clopyroxyacetic acid and herbicidal composition, which is applied in the field of agriculture to achieve the effect of remarkable control, fast drug effect and remarkable weeding effect

Active Publication Date: 2018-11-13
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Saflufenacil is used in post-emergence stem and leaf treatment in rice fields. It has been reported that saflufenacil mixed wi

Method used

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  • Herbicidal composition containing trichlopyr and pyribenzoxim and application of herbicidal composition
  • Herbicidal composition containing trichlopyr and pyribenzoxim and application of herbicidal composition
  • Herbicidal composition containing trichlopyr and pyribenzoxim and application of herbicidal composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: Screening test of the formula ratio of the triclofenac and saflufenacil compound formulation.

[0028] In order to screen the best formulation ratio of tricrapene and saflufenacil, a series of whole plant bioassays were performed in the artificial climate room of the Rice Industry Engineering Technology Research Institute of Yangzhou University.

[0029] 1.1 Weeds tested: Echinochloa crusgalli, Leptochloa chinensis, Murdannia triquetra, Alternanthera philoxeroides, Sagittaria trifolia, Cyperus difformis , Scirpus juncoides (Scirpus juncoides). When using herbicides to weed in rice fields, weeds are usually divided into three categories: gramineous weeds, broadleaf weeds, and Cyperaceae weeds. In addition, some perennial weeds are seriously harmful. The seven species of grasses tested in this experiment are all serious malignant weeds in rice fields at present, and represent different target weed groups. Barnyardgrass and Stephanotis represent malignant weeds in r...

Embodiment 2

[0123] Example 2: Determination of the Safety of Triclofenac and Saflufenacil on Rice

[0124] In order to determine the safety of the compound of Triclopyr and Saflufenacil on rice, a series of whole plant biological assays were carried out in the artificial climate room of the Rice Industry Engineering Technology Research Institute of Yangzhou University. Based on the previous results, a ratio of tricclopyr: saflufenacil=10:1 was used in the rice safety test.

[0125] 2.1 Test crops: Japonica rice (Nanjing 9108), Indica rice (Yongyou 2640).

[0126] 2.2 Triclofenac·Saflufenacil compound dosage setting: Triclopyr + saflufenacil: 0+0, 50+5, 100+10, 200+20, 400+40g a.i. / hm 2

[0127] 2.3 Test method:

[0128] In the rice safety test, the tested rice plants were tested at the 3-4 leaf stage, 5-6 leaf stage, and end tillering stage (before the jointing stage, the main stem begins to joint, and the jointing length is less than 1cm). In a plastic box with a size of 22×15×10 cm, filled with...

Embodiment 3 3

[0137] Example 3 Determination of the inhibitory effect of triclofenac and saflufenacil compound on resistant weeds

[0138] In order to determine the inhibitory effect of the compound of Triclopyr and Saflufenacil on the herbicide-resistant weeds that are seriously harmful to rice fields, a series of whole plant biological assays were carried out in the artificial climate room of the Rice Industry Engineering Technology Research Institute of Yangzhou University . Based on the previous results, the ratio of tricrapene: saflufenacil=10:1 was used in the experiment.

[0139] 3.1 Weeds tested: Cyhalofop-resistant Stephanotis, Penoxsulam-resistant Barnyardgrass, Conventional Stephania, and Conventional Barnyardgrass. Cyhalofop-butyl is an aryloxyphenoxypropionate herbicide, which has specific effects on the malignant weeds of rice paddy cephalosporium; Penoxsulam is a pyrimidine sulfonamide herbicide, which has specific effects on the malignant weeds of rice field barnyardgrass. ; Cy...

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Abstract

The invention discloses a herbicidal composition which comprises trichlopyr and pyribenzoxim in a weight ratio (2.5-40):1. The invention further discloses the application of the herbicidal compositionto prevention and control of weeds in rice fields. The two agents are capable of effectively killing different types of weeds respectively, have obvious synergistic effects after being compounded together, improve the playing speed of herbicide efficacy, reduce the use amount of herbicides, and improve the safety to rice. The two agents are complementary to each other in herbicide controlling spectrums; after being mixed, the herbicidal controlling spectrums can effectively cover gramineous, broadleaved and sedge weeds, including barnyard grass, leptochloa chinensis, murdannia triquetra, alternanther philoxeroides, sagittaria trifolia, scirpus juncoides roxb, cyperus difformis and other malignant weeds which are common in rice fields; and the herbicidal composition has high activity against perennial malignant weeds and resistant weeds that are extremely refractory in the rice fields, and is huge in market potential.

Description

Technical field [0001] The invention belongs to the technical field of agriculture, and specifically relates to a herbicidal composition and its application. Background technique [0002] my country is the country with the largest rice production in the world. The annual rice planting area is about 30.178 million hectares (450 million mu) and the annual output of rice is about 210 million tons. The planting area and output account for 18.1% of the total sown area and total output of my country's crops. And 33.6%. Therefore, ensuring stable rice production and rice quality safety is one of the basic tasks of my country's planting industry. Weed damage is one of the main biological disasters faced in rice cultivation. Even if various prevention and control measures are taken, the loss of rice yield directly caused by weed damage in rice fields is as high as 13.8%-21.4%. At present, weeding through the use of herbicides is still the most important method for the prevention and cont...

Claims

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Application Information

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IPC IPC(8): A01N43/40A01N43/54A01P13/00
CPCA01N43/40A01N43/54
Inventor 陈国奇霍中洋张洪程高辉魏海燕郭保卫胡雅杰韦还和
Owner YANGZHOU UNIV
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