Citrus Tree Emulsion Film for Huanglongbing Control
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Solution Overview
Problem
Existing methods for preventing and treating the yellow shoot disease in citrus fruit trees, caused by gram-negative bacteria, are inadequate in eradicating infected bacteria and do not effectively prevent the spread of the disease, leading to widespread outbreaks.
Innovation Solution
An emulsion composed of dodecanol, hexadecanol, bactericidal insecticide (tea saponin and azadirachtin), plant nutrient (amino acid or humic acid), emulsifier, co-emulsifier, thickener, and water, applied as a film on the tree and roots, to kill pathogenic bacteria and supplement nutrients, thereby cutting off the disease propagation pathway.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional pesticide methods are used to treat yellow shoot disease, then some pathogen control is achieved, but the bacteria cannot be completely eradicated and the disease continues to spread
Solution Approach 1:
The patent uses a composite formulation containing multiple active ingredients (tea saponin, azadirachtin, and other bactericidal components) working synergistically to achieve complete pathogen eradication. This composite approach overcomes the limitation of single-ingredient pesticides that cannot fully eliminate the bacteria.
Solution Approach 2:
The emulsion system acts as an intermediary carrier that delivers bactericidal substances directly to the pathogen sites in roots, trunks, and branches. The emulsifier and co-emulsifier create a delivery mechanism that penetrates plant tissues and targets the bacteria effectively.
2Object-affected harmful factors
If strict quarantine and elimination methods are implemented, then new infections are prevented, but existing infected trees cannot be treated and the disease recurs
Solution Approach 1:
The patent enables treatment of infected trees through direct application of the emulsion formulation, allowing the trees to receive therapeutic treatment rather than requiring elimination. The formulation is designed to be applied directly to affected areas, enabling the trees to fight off the infection themselves.
Solution Approach 2:
The patent changes the approach from binary quarantine/elimination to a spectrum of treatment intensities. By adjusting the concentration and application frequency of the emulsion, different levels of treatment can be applied to match the severity of infection, allowing flexible management of infected trees.
3Object-affected harmful factors
If microbial control methods are used, then some pathogen suppression is achieved, but the control is not sufficient to prevent widespread outbreaks
Solution Approach 1:
The patent employs strong bactericidal ingredients including tea saponin and azadirachtin that actively destroy bacterial cell structures. These components provide accelerated and thorough pathogen elimination compared to mild microbial control methods, ensuring reliable disease prevention.
4Reliability
If nutrient supplementation methods are used to improve tree resistance, then tree vitality is enhanced, but existing infections are not eradicated
Solution Approach 1:
The patent merges pathogen eradication functions with nutrient supplementation in a single integrated formulation. The emulsion contains both bactericidal ingredients (tea saponin, azadirachtin) and nutrient components, allowing simultaneous treatment of infection and strengthening of the tree's vitality in one application.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The emulsion effectively kills pathogenic bacteria, forms a protective film, and restores the vitality of diseased trees by supplementing nutrients, significantly reducing the spread and severity of the yellow shoot disease.
Implementation Method 1
An emulsion composed of dodecanol, hexadecanol, bactericidal insecticide (tea saponin and azadirachtin), plant nutrient (amino acid or humic acid), emulsifier, co-emulsifier, thickener, and water
Implementation Method 2
applied as a film on the tree and roots
Implementation Method 3
200 parts of dodecanol, 50 parts of hexadecanol, 6 parts of an emulsifier, 5 parts of a co-emulsifier
Data Source
AI summary
Provided is an emulsion in water for preventing and treating a yellow shoot of a citrus fruit tree, and it is composed of the following components according to the weight ratio: 100-300 parts of a dodecanol, 2-150 parts of a hexadecanol, 1-100 parts of a bactericidal insecticide, 5-150 parts of a plant nutrient, 5-10 parts of an emulsifier, 4-6 parts of a co-emulsifier, 40 parts of a thickener, and 500-800 parts of water. Further provided are a preparation method for the above emulsion in water for preventing and treating the yellow shoot of the citrus fruit tree, and an application method. The emulsion in water for preventing and treating the yellow shoot of the citrus fruit tree, the preparation method and the application method provided by the present invention may achieve the following technical effects: the main propagation path of the citrus yellow shoot is cut off, the spread of the yellow shoot is prevented, pathogenic bacteria of the yellow shoot of the fruit tree are killed, and the vitality of a diseased tree is restored.