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Method and iodine-containing composition for preventing and treating huanglongbing of rutaceous plant

A composition and plant technology, applied in botany equipment and methods, chemicals for biological control, pest control, etc., to achieve the effect of restoring vitality, reducing plant damage, and eliminating pathogens

Active Publication Date: 2020-09-04
ACADEMY OF PLANNING & DESIGNING OF THE MINIST OF AGRI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on plant disease control

Method used

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  • Method and iodine-containing composition for preventing and treating huanglongbing of rutaceous plant
  • Method and iodine-containing composition for preventing and treating huanglongbing of rutaceous plant
  • Method and iodine-containing composition for preventing and treating huanglongbing of rutaceous plant

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Embodiment 1, pressure perfusion device

[0062] The structure of the pressure perfusion device used in each embodiment of the present invention is as follows: figure 1 As shown, it is mainly composed of a pressure-resistant bottle 1 and a catheter 2. The mouth of the pressure-resistant bottle 1 is provided with a control valve 3, the outlet of the control valve 3 is connected to one end of the catheter 2, and the other end of the catheter 2 is set An injection head 4 is arranged, and the injection head 4 can be inserted into the tree hole on the trunk to input the liquid in the pressure-resistant bottle 1 into the tree body.

Embodiment 2

[0063] Embodiment 2, the field prevention and control to mild disease tree

[0064] 1. Test settings

[0065] Test location: a navel orange orchard in Huangsha Village, Yeping Township, Ruijin City, Ganzhou

[0066] Test time: July 2019-April 2020

[0067] Test variety: Newhall Navel Orange, 6-8 years old

[0068] Test agent and dosage: the iodine-containing composition is composed of 10 parts by weight of chitosan oligoacid iodine, 5 parts by weight of potassium iodide, 5 parts by weight of potassium iodate, 10 parts by weight of dimethyl sulfoxide, and 70 parts by weight of water. , 30mL per application per plant.

[0069] Mild disease tree selection: First, according to the following citrus Huanglongbing disease classification standards, the Huanglongbing tree is divided into 5 disease levels,

[0070] Level 1: There are 5-6 leaves on the tree showing mottled yellowing symptoms;

[0071] Level 2: Mottled yellowing symptoms appear on some side branches or main branches,...

Embodiment 3

[0094] Embodiment 3, to the field control of severe disease tree

[0095] 1. Test settings

[0096] Test location: a navel orange orchard in Lianjiang Village, Shazhouba Town, Ruijin City, Ganzhou

[0097] Test time: July-August 2019

[0098] Test variety: Newhall Navel Orange, 5-6 years old

[0099] Test agent and application times: iodine-containing composition is composed of 10 parts by weight of amino acid iodine, 10 parts by weight of potassium iodide, 5 parts by weight of iodine iodate, 5 parts by weight of dimethyl sulfoxide, and 70 parts by weight of water; times of application: once, Dosage: 100mL, quantitatively diluted to 2000mL, poured into two 2000mL pressure-resistant bottles on average.

[0100] Severe disease tree selection: according to the disease grading standard among the embodiment 2, select 5 strains of state of an illness at the severe Huanglongbing tree of 4-5 grade (recorded as No. 6 tree, No. 7 tree, No. 8 tree, No. 9 tree, No. 10 tree ) for patho...

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Abstract

The invention relates to a method and iodine-containing composition for preventing and treating huanglongbing of a rutaceous plant, and belongs to the technology of plant disease and pest prevention and control. The method comprises the following steps of drilling: drilling infusion holes in the trunk of the plant, wherein the infusion holes are deep to the xylem of the trunk; and pathogen clearing and killing: providing each infusion hole with a pressure perfusion device to perfuse a medicament into a tree body, wherein the medicament is directly conducted in the tree body through internal absorption to form an internal circulation prevention and control system, the medicament enters the tree body under the action of gas pressure and transpiration tension of the tree body, and an effective component of the adopted medicament is the iodine-containing composition. Aiming at the huanglongbing of the rutaceous plant and parasitic diseases of other woody plants, the medicament is rapidly conveyed to all parts of the tree body within 12 hours in a pressure perfusion mode, so that pathogens can be thoroughly removed and damage to the plant is small; and in addition, the medicament resistance is not likely to be generated, the tree body recovers rapidly, the influence of weather conditions is avoided, the environment is not polluted, the method is safe and ecological, and the method is labor-saving and feasible.

Description

technical field [0001] The invention belongs to plant disease control technology, in particular to a method for preventing and treating Huanglongbing of Rutaceae plants and an iodine-containing composition Background technique [0002] Citrus huanglongbing is the most devastating infectious disease in citrus production in the world. It is caused by a Gram-negative bacterium limited to the phloem. Rutaceae plants. Citrus huanglongbing has occurred in more than 40 countries in Asia, Africa, North America, South America and Oceania, causing huge losses to citrus industries all over the world. The pathogen of Huanglongbing is a Gram-negative bacterium that exclusively parasitizes in the phloem of citrus trees. It only grows in sieve tube cells. There is no effective technology for in vitro culture, which hinders the research on its infection mechanism and the screening of control drugs. [0003] At present, the means of preventing and controlling citrus HLB mainly include chem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G17/00A01G13/00A01G7/06A01N59/12A01N43/16A01P1/00A01P21/00
CPCA01G17/005A01G13/00A01G7/06A01N59/12A01N43/16
Inventor 胡雪芳王士奎孙昊李旭锐
Owner ACADEMY OF PLANNING & DESIGNING OF THE MINIST OF AGRI
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