RNAi Trap Strips for Targeted Beet Weevil Control
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Solution Overview
Problem
Current methods for controlling beet weevil infestations in sugar beet fields are often inefficient, costly, and can have negative environmental impacts, particularly when relying solely on chemical controls, and there is a need for sustainable and effective strategies that minimize crop damage while avoiding harm to beneficial organisms.
Innovation Solution
A method using nucleic acid molecules, particularly RNAi molecules, applied to agricultural areas or trap strips with trap plants to inhibit the metabolism, development, or reproduction of weevils, combined with precise application technologies like GPS and AI for targeted intervention, minimizing pesticide use and environmental harm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical insecticides are used to control beet weevil infestations, then crop protection effectiveness is improved, but environmental harm and resistance development increase
Solution Approach 1:
The patent replaces chemical insecticide applications with a biological control mechanism using RNA interference. The RNAi composition is applied to trap plants, which then naturally deliver the active ingredient to weevils through feeding behavior, eliminating the need for direct chemical spraying and reducing environmental contamination while maintaining control effectiveness
Solution Approach 2:
Trap plants serve as intermediaries between the RNAi composition and the target weevil population. The plants absorb and concentrate the RNAi active ingredient, then deliver it to weevils through their natural feeding process, providing a sustainable control mechanism that avoids direct chemical application to the crop field
2Productivity
If chemical insecticides are applied broadly to control weevil populations, then pest suppression is improved, but cost and operational complexity increase
Solution Approach 1:
The patent applies control measures locally to trap plants at field edges and perimeters rather than broadly across the entire crop area. This localized application strategy reduces the quantity of active ingredient needed and simplifies operational procedures while still achieving effective weevil population suppression through targeted intervention at critical entry points
3Reliability
If neonicotinoid seed treatments are used at low infestation densities, then crop protection is improved, but availability and long-term sustainability worsen due to bans
Solution Approach 1:
The patent transitions from chemical parameter-based control (neonicotinoid seed treatments) to a biological parameter-based control (RNA interference). This fundamental parameter change enables sustainable crop protection that is not subject to the same regulatory bans and availability constraints, while maintaining effectiveness across varying infestation densities
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 method effectively prevents weevil infestations by specifically targeting beet weevils, reducing crop damage, and minimizing environmental impact while being economically viable and environmentally friendly, without genetic modification of crops.
Implementation Method 1
a composition containing one or more types of nucleic acid molecules, in particular interference RNA (RNAi) molecules, which affect the metabolism, development, reproduction or survivability of weevils
Data Source
Figure 1
Figure 2a~3c
AI summary
The present invention relates to a method for controlling a weevil infestation, in particular a beet weevil infestation, in the agricultural production of crops, wherein (i) either a composition containing one or more types of nucleic acid molecules, in particular interference RNA (RNAi) molecules, which inhibit the metabolism, development, reproductive capacity or viability of weevils (Curculionidae), in particular beet weevils (sugar beet weevil; Asproarthenis punctiventris), is applied to an agricultural area;or (ii) a composition comprising one or more types of nucleic acid molecules, in particular RNAi molecules, which inhibit the metabolism, development, reproductive capacity or viability of weevils, applied to trap plant strips at the edge of, within and/or around the agricultural area, wherein these trap plant strips are sown with a trap plant density of at least 50 plants/m2; such that the weevils, in particular the beet weevils, come into contact with the nucleic acid molecules, in particular the RNAi molecules, so that the development, reproductive capacity or viability of the weevils is inhibited.;