Phytopathogenic Fungus Detection with Concentration-Gradient Culture Media
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Solution Overview
Problem
Conventional methods for detecting phytopathogenic fungi and selecting effective agricultural chemicals are inefficient, often leading to excessive chemical application and the promotion of resistant fungi, resulting in unsuppressed diseases and reduced harvests.
Innovation Solution
A phytopathogenic fungus detecting apparatus with artificial cell walls and culture medium layers containing different concentrations of agricultural chemicals, allowing for selective detection and determination of effective chemical concentrations before pathogenesis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional detection methods are used to identify pathogenic fungi, then detection can be performed, but excessive agricultural chemical application is required leading to resistant fungus emergence
Solution Approach 1:
The patent applies preliminary action by performing detection and chemical concentration selection before pathogenesis occurs. The system detects pathogenic fungi in advance and determines the effective chemical concentration prior to disease development, enabling preventive treatment rather than reactive application. This resolves the contradiction by eliminating the need for excessive chemical application that causes resistance.
Solution Approach 2:
The patent employs parameter changes by testing multiple concentrations of agricultural chemicals (0.1×, 0.5×, 1×, 2×, 5× standard concentration) to identify the minimum effective concentration. This systematic variation of chemical concentration parameters allows precise selection of treatment dosage, preventing both under-treatment and excessive application that leads to resistant fungus emergence.
2Reliability
If agricultural chemicals are applied in advance to prevent pathogenesis, then disease prevention is achieved, but excessive chemical application occurs promoting resistant fungi
Solution Approach 1:
The patent implements feedback by using detection results to guide chemical application decisions. The system provides feedback on whether pathogenic fungi are present and what concentration of chemical is effective, enabling precise application only when needed and at the minimum effective dose. This resolves the contradiction between disease prevention and excessive chemical usage.
Solution Approach 2:
The system performs preliminary detection and chemical concentration determination before disease occurs, allowing preventive application at optimized concentrations rather than excessive blanket application. This ensures disease prevention while minimizing chemical usage through evidence-based dosing.
3Measurement precision
If conventional detection methods are used, then pathogenic fungi can be identified, but effective chemical concentration selection is not possible
Solution Approach 1:
The patent merges fungus detection functionality with chemical concentration selection capability into a single integrated system. The detection apparatus not only identifies pathogenic fungi but also simultaneously determines which chemical concentration is effective by testing multiple concentrations in parallel. This resolves the contradiction by eliminating information loss about chemical effectiveness.
Solution Approach 2:
The system achieves multi-functionality by combining detection and chemical screening capabilities in one apparatus. It can detect various pathogenic fungi and simultaneously evaluate multiple agricultural chemicals at different concentrations, providing comprehensive information for treatment decisions without requiring separate testing processes.
4Measurement precision
If separate identification and chemical application are performed sequentially, then detection is possible, but time is lost allowing pathogenesis to progress
Solution Approach 1:
The patent combines sequential operations of fungus identification and chemical effectiveness testing into a simultaneous parallel process. Both detection and chemical screening occur together in the same system, eliminating the time delay between identification and treatment planning that allows pathogenesis to progress.
Solution Approach 2:
The system maintains continuous useful action by performing detection and chemical evaluation simultaneously without interruption. The parallel processing ensures that treatment decisions are made based on current information rather than delayed results, preventing disease progression during the testing period.
Data Source
AI summary
The detecting apparatus according to the present disclosure comprises devices each including an artificial cell wall, a test sample inlet provided above the artificial cell wall, and a culture medium layer provided under the artificial cell wall, and an observation part configured to laterally observe at least one of the culture medium layers of the devices, wherein the culture medium layers of the devises respectively contain different technical-grade active ingredients, each of the culture medium layers of the devices includes a plurality of layers that each contain an agricultural chemical in a standard amount or at a diluted concentration with respect to the standard amount and are stacked in a descending order of concentration of the agricultural chemical from bottom to top, and each of the culture medium layers of the devices further includes, as an uppermost layer, a layer containing no agricultural chemical.