Use of 2,3-epoxy-1-hydroxy-4,9-radigeranidiolene-12,8:14-diinner-ester as herbicide

A technology of geranadiene and dilactone, applied in 2, can solve the problems of soil and groundwater resource pollution, high residue, slow decomposition of chemical herbicides, etc., and achieve the effect of strong broad-spectrum inhibition.

Inactive Publication Date: 2004-01-28
SOUTH CHINA PLANT INST CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in large-scale use, many chemical herbicides may cause persistent pollution to

Method used

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  • Use of 2,3-epoxy-1-hydroxy-4,9-radigeranidiolene-12,8:14-diinner-ester as herbicide
  • Use of 2,3-epoxy-1-hydroxy-4,9-radigeranidiolene-12,8:14-diinner-ester as herbicide
  • Use of 2,3-epoxy-1-hydroxy-4,9-radigeranidiolene-12,8:14-diinner-ester as herbicide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment one: to the influence of lettuce and ryegrass seed germination rate

[0019] Method: 2,3-epoxy-1-hydroxyl-4,9-geranyadiene-12,8:14,6-dilactone was formulated into 10mg / L, 50mg / L, 100mg / L, 200mg / L, 500mg / L, 1000mg / L several different concentrations, use the same method to test the lettuce and ryegrass seeds, and count the germination rate after 3 days.

[0020] Results: With the increase of the concentration, the inhibitory effect of 2,3-epoxy-1-hydroxy-4,9-gernadiene-12,8:14,6-dilactone on the germination rate of lettuce seeds gradually increased Big. When the concentration was 10-200mg / L, the germination rate of lettuce seeds was not significantly affected. But when the concentration reached 500mg / L, the germination rate decreased to 64%. When the concentration was 1000mg / L, the lettuce seed germination rate was reduced to 18% (see attached figure 1 ).

[0021] The effect of 2,3-epoxy-1-hydroxy-4,9-gernadiene-12,8:14,6-dilactone on germination rate of ...

Embodiment 2

[0022] Embodiment two: the impact on the growth of lettuce seedlings and the contrast with commercial herbicide Harness (Harness) effect

[0023] Method: 2,3-epoxy-1-hydroxy-4,9-germanadiene-12,8:14,6-dilactone was formulated into 25mg / L, 50mg / L, 100mg / L, 250mg / L, 500mg / L concentration gradient, the lettuce seeds that had been germinated in advance were used for bioassay, and the root length and seedling height were counted after 3 days. In order to detect its action strength, the herbicide Harness (Herness, produced by Monsanto, USA) was prepared into the same gradient concentration for comparison.

[0024] In order to eliminate the influence brought by the too high or too low pH value in the experiment, the pH value of the solution in the petri dish was measured, compared with the control (distilled water), the pH value was basically the same, all around 6.0.

[0025] Results: 2,3-Epoxy-1-hydroxyl-4,9-gernadiene-12,8:14,6-dilactone had an IC value of half inhibitory concen...

Embodiment 3

[0028] Example 3: Effect of 2,3-epoxy-1-hydroxyl-4,9-geranyadiene-12,8:14,6-dilactone on the growth of ryegrass seedlings

[0029] Method: same as embodiment two

[0030] Results: Same as the effect on lettuce seedlings, the growth of ryegrass was significantly inhibited by 2,3-epoxy-1-hydroxy-4,9-gernadiene-12,8:14,6-dilactone. The half inhibitory concentration IC of 2,3-epoxy-1-hydroxy-4,9-geranyadiene-12,8:14,6-dilactone on the root growth of ryegrass seedlings 60 The value is 290mg / L (see attached Figure 5 ). At higher concentrations, 2,3-epoxy-1-hydroxy-4,9-gernadiene-12,8:14,6-dilactone yellowed the root tips of seedlings. Likewise, 2,3-epoxy-1-hydroxy-4,9-gernadiene-12,8:14,6-dilactone had a much weaker effect on shoot height than root length in ryegrass (see attached Figure 6 ).

[0031]The comparison with the commercial chemical herbicide Harness (Harness) shows that when the concentration is greater than or equal to 50mg / L, 2,3-epoxy-1-hydroxy-4,9-bigergeradi...

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Abstract

The invention refers to the application of 2, 3-epoxy-1-hydroxy-4, 9-germacradiene-12, 8:14, 6-diolide as the weedicide. The compound has stronger inhibition on both seed germination and young seedling growth of monocotyledon and dicotyledon, low-toxicity and easy to decompose, and able to be applied to prevention and cure of harmful plants like the weed.

Description

technical field [0001] The present invention relates to 2,3-epoxy-1-hydroxy-4,9-gernadiene-12,8:14,6-dilactone (2,3-Epoxy-1-hydroxy-4,9- germacradiene-12, 8:14, 6-diolide) as a herbicide can be used to control weeds and other harmful plants in environmental protection and agricultural production. technical background [0002] Herbicides are often used to control harmful weeds in agricultural production and ecological protection. Nearly one million kilograms of chemical herbicides are applied directly to soil every year. However, in large-scale use, many chemical herbicides may cause persistent pollution to soil and groundwater resources due to their slow decomposition and high residual levels. With the strengthening of environmental protection awareness and the formulation and improvement of a series of environmental protection regulations, there is an urgent need to develop relatively low-toxic, easy-to-decompose natural herbicides. Contents of the invention [0003] T...

Claims

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Application Information

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IPC IPC(8): A01N43/20
Inventor 彭少麟邵华魏孝义张弛
Owner SOUTH CHINA PLANT INST CHINESE ACAD OF SCI
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