Ametryn Pre-Emergent Herbicide for Corn Crop Safety
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Solution Overview
Problem
Conventional herbicides are ineffective in preventing weed growth and often harm emerging crops due to lack of selectivity, while post-emergent herbicides only control established weeds, not addressing pre-emergent weed issues effectively.
Innovation Solution
Applying a composition consisting essentially of triazine-based herbicides, such as ametryn, to the soil before crop emergence to control weeds without harming desirable crop plants, utilizing various application times and concentrations tailored to soil types and weed species.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pre-emergent herbicides are applied to control weed growth before crop emergence, then weed control effectiveness is improved, but harmful effects on emerging crop plants increase due to lack of selectivity
Solution Approach 1:
The patent applies ametryn herbicide at specific application rates (0.5 to 3.0 lbs active ingredient per acre) and timing (within 7 days before crop emergence) to achieve effective weed control while maintaining crop safety. The controlled parameters of concentration and application timing resolve the contradiction between weed control effectiveness and crop safety
Solution Approach 2:
The herbicide is applied to the soil before crop emergence, creating a pre-emergent barrier that prevents weed establishment while allowing crop seeds to germinate and emerge safely. This preliminary action establishes effective weed control without exposing emerging crops to harmful herbicide levels
2Object-generated harmful factors
If post-emergent herbicides are used to control established weeds, then weed destruction capability is improved, but ability to prevent weed growth deteriorates
Solution Approach 1:
Instead of applying herbicide after weed emergence (post-emergent approach), the patent inverts the timing to apply the herbicide before crop and weed emergence (pre-emergent approach). This inversion allows the herbicide to prevent weed growth at the source while the emerging crop exhibits tolerance to the specific herbicide used
3Reliability
If conventional herbicides are applied to control weeds, then weed control coverage is improved, but selectivity toward crop plants deteriorates
Solution Approach 1:
The patent employs a herbicide program where ametryn is applied pre-emergently to provide broad-spectrum weed control, followed by selective post-emergent herbicides applied after crop emergence. Each herbicide application targets specific weed types while the emerging crop demonstrates selectivity and tolerance, achieving both comprehensive coverage and crop safety
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
Achieves effective pre-emergent weed control with minimal impact on crop plants, providing up to 100% weed control and ensuring crop safety and yield, even in diverse soil textures and weed species.
Implementation Method 1
Triazine-based herbicides such as ametryn, atrazine, metribuzin, terbuthylazine, prometryn, propazine, simazine, trietazine, prometryn, desmetryn, terbutryne, terbumeton, and cyanazine inhibit photosynthesis and other enzymatic processes
Data Source
AI summary
Methods for pre-emergent weed control using a triazine-based herbicide are disclosed. Particularly, methods of using ametryn as a pre-emergent herbicide to control weeds in corn crops are disclosed.