L-glufosinate Herbicide Mixture for Weed Control
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Solution Overview
Problem
Existing herbicidal mixtures using racemic glufosinate are not effective in achieving efficient and reliable control of grass and broadleaf weeds, requiring multiple applications and high dosage rates, and are susceptible to weathering conditions and escape of difficult-to-control weed species.
Innovation Solution
A herbicidal mixture comprising L-glufosinate or its salt in combination with a selected herbicidal compound II, such as dichlobenil, diflufenzopyr, or triaziflam, which enhances the herbicidal activity and persistence, allowing for more flexible application and improved control of weeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If racemic glufosinate is used in herbicidal mixtures, then broad-spectrum weed control is achieved, but multiple applications and high dosage rates are required
Solution Approach 1:
The patent changes the stereochemical parameter of glufosinate from racemic (DL-) form to the pure L-enantiomer form. This parameter change results in enhanced herbicidal activity, allowing effective weed control at lower dosage rates and with fewer applications compared to racemic glufosinate mixtures
2Reliability
If racemic glufosinate is used in herbicidal mixtures, then weed control is achieved, but the control is susceptible to weathering conditions and weed escape
Solution Approach 1:
The patent changes the stereochemical purity parameter from racemic to L-glufosinate enantiomer, which provides more stable and reliable weed control that is less susceptible to weathering conditions and prevents weed escape, thereby improving the persistence and reliability of the herbicidal action
3Productivity
If L-glufosinate is used alone, then herbicidal activity is achieved, but application frequency must be increased to maintain control
Solution Approach 1:
The patent combines L-glufosinate with specific herbicidal compounds (such as dichlobenil, diflufenzopyr, triaziflam, or cyanazine) to create synergistic herbicidal mixtures. This combination enhances the overall herbicidal activity and extends the duration of control, reducing the frequency of applications needed compared to using L-glufosinate alone
Data Source
AI summary
The present invention relates to herbicidal mixture comprising L-glufosinate or its salt and a herbicidal compound II selected from chlorthiamid, dichlobenil, flupoxam, indaziflam, isoxaben, triaziflam, 1-cyclohexyl-5-pentafluorphenyloxy-14-[1,2,4,6]thiatriazin-3-ylamine (CAS 175899-01-1), diflufenzopyr, diflufenzopyr-sodium, naptalam and naptalam-sodium, bromobutide, chlorflurenol, chlorflurenol-methyl, cinmethylin, cumyluron, cyclopyrimorate (CAS 499223-49-3) and its salts and esters, dalapon, dazomet, difenzoquat, difenzoquat-metilsulfate, dimethipin, DSMA, dymron, endothal and its salts, etobenzanid, flurenol, flurenol-butyl, flurprimidol, fosamine, fosamine-ammonium, indanofan, maleic hydrazide, mefluidide, metam, methiozolin (CAS 403640-27-7), methyl azide, methyl bromide, methyl-dymron, methyl iodide, MSMA, oleic acid, oxaziclomefone, pelargonic acid, pyributicarb, quinoclamine, tridiphane; bilanaphos (bialaphos) and bilanaphos-sodium. The invention furthermore relates to a method for controlling undesirable vegetation in burndown programs, in industrial vegetation management and forestry, in vegetable and perennial crops and in turf and lawn.