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Weeding composition containing triclopyr and benzobicyclon and application thereof

A technology of triclosan and a herbicidal composition, applied in the agricultural field, can solve the problems of phytotoxicity of rice seedlings and the unsatisfactory speed of drug efficacy, and achieve the effects of reducing dosage, accelerating drug efficacy and improving safety.

Inactive Publication Date: 2019-02-12
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the use of bicyclic sulcotrione in high doses in paddy fields is likely to cause phytotoxicity of rice seedlings, and the drug effect of this drug in a single dose is not ideal.

Method used

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  • Weeding composition containing triclopyr and benzobicyclon and application thereof
  • Weeding composition containing triclopyr and benzobicyclon and application thereof
  • Weeding composition containing triclopyr and benzobicyclon and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Screening test on the ratio of the compound formulation of clopyroxyacetic acid and bicyclosulfotrione.

[0024] In order to screen the optimal formula ratio of clopyroxyacetic acid and bicyclosulfotrione, a series of whole plant bioassays were carried out in artificial climate chamber.

[0025] 1.1 The tested weeds: barnyardgrass, stephenia, water bamboo leaves, special-shaped sedge. In weed control, weeds in paddy fields are usually divided into three categories: grass weeds, broadleaf weeds, and sedge weeds. The four kinds of grasses used in this experiment are all malignant weeds that are seriously harmful to rice fields at present, among which Barnyard Grass and Qianjinzi represent the malignant weeds of Gramineae in rice fields; Sedge represents the vicious Cyperaceae weed in rice field.

[0026] 1.2 Dosage settings for binary compound formulation ratio screening test:

[0027] 1) The dosage settings of each single dose are as follows:

[0028] Tric...

Embodiment 2

[0087] Example 2: Determination of the safety of the compound of clopyroxyacetic acid and bicyclic sulcotrione on rice

[0088]In order to determine the safety of the compound of clopyroxyacetic acid and bicyclosulfotrione on rice, a series of whole plant bioassays were carried out in artificial climate chamber. Based on the previous results, the ratio of clopyroxyacetic acid:bicyclosulfotrione=2:1 was used for the rice safety test.

[0089] 2.1 Test crops: japonica rice (Nanjing 9108), indica rice (Yongyou 2640).

[0090] 2.2 Dose setting: clopyroxyacetic acid + bicyclosulfotrione: 0+0, 50+25, 100+50, 200+100g a.i. / hm 2

[0091] 2.3 Test method:

[0092] The safety test on rice was conducted to detect the safety of the clopyroxyacetic acid-bicyclosulfotrione compound on the 3-4 leaf stage and the 5-6 leaf stage of rice respectively.

[0093] In plastic boxes with specifications of 22×15×10 cm, put organic soil (pH value 6.5, organic matter content 2.4%) without using herb...

Embodiment 3

[0102] Example 3: Determination of the quick-acting effect of the compound agent of clopyroxyacetic acid and bicyclic sulcotrione for preventing and controlling weeds

[0103] In order to test the quick effect of clopyroxyacetic acid-bicyclosulfotrione compound on controlling weeds, a series of whole plant bioassays were carried out in artificial climate chamber. The previous results show that clopyroxyacetic acid 200g a.i. / hm 2 + Bicyclic Sulfotrione 100ga.i. / hm 2 It is safe to rice, so this dose was used as the dosage setting of the compound preparation of clopyroxyacetic acid and bicyclic sulcotrione in this study. The recommended dose of bicyclosulfotrione in paddy field is 150-225g a.i. / hm 2 , therefore, it is proposed to use bicyclic sulcotrione 225ga.i. / hm 2 dose as the control dose.

[0104] 3.1 Weeds tested: Barnyardgrass, Qianjinzi.

[0105] 3.2 Herbicide dose setting:

[0106] T1: Triclopyr 200g a.i. / hm 2

[0107] T2: Triclopyr 200g a.i. / hm 2 + Bicyclic Sul...

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Abstract

The invention discloses a weeding composition. The weeding composition is prepared from triclopyr and benzobicyclon according to the weight ratio of (0.5-8):1. The invention also discloses applicationof the weeding composition in preventing and controlling weeds in paddy fields. According to the weeding composition and the application thereof, the two reagents can efficiently kill the weeds of different class groups, in addition, an obvious synergistic effect is achieved after the two reagents are compounded for use, the pesticide effect is accelerated, the dosage of a herbicide is decreased,and therefore the safety of rice is improved; and the herbicide controlling spectra of the two reagent components supplement each other and can effectively cover the common weeds in various paddy fields after being mixed for use, and the market potential is huge.

Description

technical field [0001] The invention belongs to the field of agricultural technology, and in particular 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 rice production is about 210 million tons. The planting area and output account for 18.1% of my country's total crop planting area and total output 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 control measures are taken, the loss of rice yield directly caused by weed damage in paddy fields is as high as 13.8%-21.4%. At present, weed control through the use of herbicides is still the most important means of weed control in rice fields i...

Claims

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Application Information

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IPC IPC(8): A01N43/40A01N41/10A01P13/00
CPCA01N41/10A01N43/40
Inventor 陈国奇张洪程霍中洋高辉朱金燕郭保卫邢志鹏韦还和
Owner YANGZHOU UNIV
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