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A kind of bactericidal composition containing Trichoderma harzianum and metalaxyl

A technology of Trichoderma harzianum and composition, applied in the directions of fungicides, biocides, biocides, etc., to achieve the effects of improving drug efficacy, reducing pesticide usage and drug costs, and reducing potential resistance risks

Active Publication Date: 2018-04-24
太仓市锦福纺织有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there is no relevant report on the pesticide compound with metalaxyl and Trichoderma harzianum as active ingredients

Method used

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  • A kind of bactericidal composition containing Trichoderma harzianum and metalaxyl

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Experimental program
Comparison scheme
Effect test

Embodiment 2

[0024] Embodiment 2: 2.5% metalaxyl·100 million cfu / gram Trichoderma harzian wettable powder

[0025] When the weight ratio of metalaxyl to Trichoderma harzianum is 15:2, the composition has a synergistic effect, weighed according to the amount, 7.65 grams of 98% metalaxyl, 30 billion cfu / gram of Trichoderma harzianum parent drug 1 gram, 12 grams of sodium lignosulfonate, 7.5 grams of sodium lauryl sulfate, 15 grams of white carbon black, diatomaceous earth to make up to 300 grams. The above ingredients are fully mixed according to the proportion of the formula, and after being pulverized by an ultrafine pulverizer, 2.5% metalaxyl·100 million cfu / gram Trichoderma harzianum wettable powder is obtained.

[0026] This embodiment is applied to the prevention and treatment of rice blight. Dilute 2.5% metalaxyl · 100 million cfu / gram Trichoderma harzian wettable powder with water 1500 times and spray evenly, apply once every 5 days, apply continuously for 3 times, and 3 days after ...

Embodiment 3

[0027] Embodiment 3: 15% metalaxyl · 300 million cfu / gram Harz Trichoderma water dispersible granules

[0028] When the weight ratio of metalaxyl to Trichoderma harzianum is 45:3, the composition has a synergistic effect. Weighed according to the amount, 98% metalaxyl 45.92 grams, 30 billion cfu / gram Trichoderma harzianum parent drug 3 grams, calcium lignosulfonate 15 grams, polycarboxylate sodium 12 grams, sodium methylnaphthalene sulfonate formaldehyde condensate 12 grams, 6 grams of sodium alginate, and diatomaceous earth to make up to 300 grams. Mix the above ingredients evenly according to the ratio of the formula, crush them into powder by airflow, add a certain amount of water to mix and extrude the material, dry and sieve to obtain 15% metalaxyl·300 million cfu / gram of Trichoderma harzianum water dispersible granules agent.

[0029] This embodiment is applied to the prevention and treatment of cucumber seedling root rot. Dilute 15% metalaxyl·300 million cfu / gram of ...

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Abstract

The invention relates to a bactericidal composition containing Trichoderma harzianum and metalaxyl, wherein the content of metalaxyl in the composition is 0.5%-25%, and the content of Trichoderma harzianum in the composition is 0.5 billion cfu / g -300 million cfu / g. In the composition, Trichoderma harzianum with a content of 30 billion cfu / gram is set as 100% parent drug, the weight ratio of metalaxyl to Trichoderma harzianum is 3‑50:1‑3, and the priority weight ratio is 3‑ 45:1‑2. The present invention has the following advantages and significant technical effects. The mechanism of action of metalaxyl and Trichoderma harzianum is different, and the synergistic synergies between the two are obvious, which can greatly improve the efficacy of pesticides and reduce the amount of pesticides used and the cost of medications. At the same time, the composition of the invention greatly reduces the risk of potential resistance of existing pathogens to metalaxyl.

Description

technical field [0001] The invention relates to the technical field of agricultural control, in particular to a fungicidal composition containing Trichoderma harzianum and metalaxyl. Background technique [0002] Soil-borne diseases refer to diseases caused by pathogens such as fungi, bacteria, nematodes and viruses that live in the soil with diseased residues and attack crops from roots or stems when conditions are suitable. Long-term land continuous cropping, the increase of multiple cropping index, and unreasonable fertilization are the main factors that aggravate soil-borne diseases. Damping-off, root rot, and blight are the main diseases in the seedling stage of planted crops, which generally cause the death of a small number of seedlings, cause the lack of rows and ridges, and even cause serious consequences of lodging and death of seedlings in patches [0003] Metalaxyl, chemical name: D,L-N-(2,6-dimethylphenyl)-N-(2'-methoxyacetyl)alanine methyl ester, is one of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N63/04A01P3/00A01N37/46
Inventor 邓付圆
Owner 太仓市锦福纺织有限公司
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