Unlock instant, AI-driven research and patent intelligence for your innovation.
A kind of herbicide and its preparation method and application
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A herbicide and herbicidal activity technology, applied in the field of pesticides, can solve problems such as the development gap of fungal herbicides, and achieve the effects of less usage, wide herbicidal spectrum and environmental safety
Active Publication Date: 2018-07-10
SHANGHAI WANLIHUA BIOTECH
View PDF3 Cites 2 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
However, at present, the research direction of microbial herbicides in China is mostly concentrated in the field of actinomycetes and bacteria, and the development of fungal herbicides is still blank.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
preparation example Construction
[0033] The present invention provides a kind of preparation method of herbicide, it is characterized in that, comprises:
[0034] Step 1: Fermenting and culturing Trichoderma aeruginosa capable of producing herbicidally active substances to obtain a culture solution containing herbicidally active metabolites;
[0035] Step 2: performing a crude extraction operation on the obtained culture solution containing the herbicidally active metabolite to obtain a crude extract of the herbicidally active substance;
[0036]Step 3: using a common carrier for pesticides known in the art, formulating the crude extract into any dosage form to obtain the herbicide.
[0037] The Trichoderma aeruginosa is a strain preserved by the China General Microbiology Collection Center with the preservation number CGMCC No8722.
[0038] In the embodiment of the present invention, the step 1 adopts the conventional production method of microorganism-derived antibiotics, and culturing the Trichoderma auri...
Embodiment 1
[0054] Embodiment 1 - the preparation of the crude extract of herbicidal active substance
[0055] 3% glucose, 2.5% potato flour, 0.3% yeast powder, 0.1% yeast extract, 800.5% Tween, 0.05% potassium dihydrogen phosphate, 0.5% magnesium chloride, and 30.1% antifoaming agent LX-60 were prepared for shake flask culture base, adjust the pH to 7.0, shake the bottle with a volume of 150ml / 1L, and sterilize at 121°C for 20 minutes;
[0056] Trichoderm citrinoviridevs (Trichoderm citrinoviridevs) CGMCC No8722 bacterial classification that grows on the slant of potato sucrose medium is inoculated in this medium, and the shaker flask is placed at 28° C., 200 rpm, cultivated for 30-38 hours, and then with 5-15% The volume ratio of inoculated with the above medium 35L in a 50L fermenter, the aeration ratio is 1V / V, the tank pressure is 0.03Mpa, the temperature is 29°C, the stirring speed is 200rpm, and the culture is 92-96 hours. After the fermentation is completed, the herbicidal active ...
Embodiment 2
[0060] Embodiment 2——preparation of wettable powder
[0061] Get 30 parts of the crude extract obtained in Example 1 (weight ratio, the same below), 6 parts of Borresperse NA, 122 parts of K, 4 parts of white carbon black, 58 parts of kaolin, mix, and jet mill to obtain a wettable powder with a content of 30%.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Login to View More
Abstract
The invention provides a method for preparing a herbicide, comprising: step 1: fermenting and culturing Trichoderma aurantiolis capable of producing herbicidally active substances to obtain a culture solution containing herbicidally active metabolites; step 2: preparing the obtained herbicidally active metabolites The culture solution of active metabolites is subjected to a crude extraction operation to obtain a crude extract of herbicidal active substances; step 3: using a carrier commonly used in pesticides known in the art, the crude extract is formulated into any dosage form to obtain the herbicide. The herbicide is a new type of herbicide with crude metabolites of Trichoderma auranthoderma as an active ingredient. It has the characteristics of less usage, wide herbicidal spectrum, and environmental arrangement, and can be widely used in paddy fields and dry fields. sexual weeding.
Description
technical field [0001] The invention relates to the field of pesticides, in particular to a herbicide, in particular to a herbicide with microbial metabolites as active ingredients, a preparation method and application thereof. Background technique [0002] With the widespread use of chemical herbicides in our country, the negative impact on the environment has become increasingly significant. Extensive use of chemical pesticides not only pollutes groundwater, but also causes land degradation. From a long-term point of view, the residual toxicity and phytotoxicity caused by the extensive use of long-residual herbicides may even lead to severe crop yield reduction. At present, more than 100 kinds of chemical herbicides have been banned in more than 30 countries in the world. But this move has brought about a new problem, that is, repeated application of a single species of herbicide has led to the formation of resistant weed populations. According to the International Herb...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More