L-Glufosinate and Imidazolinone Blend for Broad-Spectrum Weed Control
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Solution Overview
Problem
Existing herbicides, such as glufosinate, have limitations in controlling broadleaf and grassy weeds, particularly perennial species, and there is a need for a synergistic herbicidal combination that effectively controls a wide spectrum of weeds without adversely affecting desirable plants and reduces chemical usage.
Innovation Solution
A herbicidal combination comprising L-glufosinate, salts, esters, or combinations thereof, and at least one imidazolinone herbicide, which acts synergistically to control both monocotyledonous and dicotyledonous weeds, including broad-leaved and grassy weeds, with application options pre-emergence, post-emergence, or at the time of sowing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If glufosinate is used as a herbicide, then broadleaf and grassy weeds can be controlled, but perennial weeds and weeds emerging after application are not effectively combated
Solution Approach 1:
The patent combines glufosinate with imidazolinone herbicides (such as imazethapyr, imazamox, imazapic, or imazapyr) to create a synergistic mixture that overcomes the limitations of glufosinate alone. This combination provides effective control across a broader spectrum of weeds including perennial species and post-emergence weeds, while maintaining safety for crop plants.
Solution Approach 2:
The invention uses a composite herbicidal formulation containing multiple active ingredients (glufosinate plus imidazolinone compounds) to achieve enhanced weed control. The composite nature of the mixture allows it to target different weed types and life stages more effectively than single-component herbicides.
2Reliability
If herbicidal combinations are used to enhance weed control, then efficacy is improved, but identifying appropriate combinations, application rates, and ratios becomes more complex
Solution Approach 1:
The patent develops a universal herbicidal combination formula that can be applied across multiple crop types and weed infestation scenarios. The imidazolinone-glufosinate combination provides multi-functional weed control capability, working effectively for pre-emergence, post-emergence, and perennial weed control in various agricultural settings.
Solution Approach 2:
The invention establishes specific parameter ranges for the herbicidal combination, including weight ratios of glufosinate to imidazolinone herbicide (e.g., 95:5 to 5:95 by weight), application rates, and timing parameters. These standardized parameters simplify the formulation and application process while maintaining optimal efficacy.
3Quantity of substance
If racemic glufosinate is used, then economic reasons favor its use, but only about half the activity is from the biologically active L-enantiomer
Solution Approach 1:
The patent extracts and utilizes the biologically active L-enantiomer of glufosinate specifically, rather than using the racemic mixture. This extraction of the active component improves herbicidal activity efficiency while reducing the total amount of chemical substance needed, as the inactive D-enantiomer is excluded.
Solution Approach 2:
The invention changes the chiral parameter of glufosinate from racemic (50:50 mixture of enantiomers) to optically active L-enantiomer form. This parameter change in stereochemistry increases the proportion of biologically active material, improving herbicidal reliability and reducing chemical usage requirements.
Data Source
AI summary
The present disclosure relates to a herbicidal combination comprising L-glufosinate, salts, esters, or combinations thereof and at least one imidazolinone herbicide. More particularly, the present disclosure relates to a method for controlling weeds with synergistic herbicidal combinations comprising L-glufosinate, salts, esters, or combinations thereof and at least one imidazolinone herbicide.