L-Glufosinate Mixtures for Lower-Rate Weed Control in Corn
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Solution Overview
Problem
Existing herbicidal mixtures for glufosinate-tolerant corn often require high application rates and fail to provide satisfactory weed control due to chemical incompatibilities and biological antagonisms, leading to increased damage to corn plants and reduced efficacy against resistant weed species.
Innovation Solution
The use of L-glufosinate in combination with specific herbicidal compounds, such as clethodim and haloxyfop, enhances herbicidal activity and compatibility with corn, allowing for reduced application rates and improved weed control with prolonged efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high application rates of existing herbicidal mixtures are used, then weed control coverage is improved, but damage to corn plants increases and economic cost increases
Solution Approach 1:
The patent changes the chemical parameter of the herbicidal mixture by using L-glufosinate (levorotatory enantiomer) instead of racemic glufosinate, and by optimizing the combination with specific herbicides (clethodim, cycloxydim, haloxyfop, quizalofop, imazamox, imazapic, or glyphosate) at defined ratios (0.1-10% L-glufosinate by weight). This parameter change achieves synergistic effects that improve weed control efficacy while reducing corn plant damage at lower application rates.
Solution Approach 2:
The patent creates a composite herbicidal mixture combining L-glufosinate with specific herbicides having different modes of action (acyl-CoA synthetase inhibitors, EPSPS inhibitors, and other mechanisms). This composite approach provides complementary weed control activities that enhance overall efficacy while reducing the need for high application rates, thereby minimizing damage to corn plants.
2Reliability
If high application rates of existing herbicidal mixtures are used, then weed control coverage is improved, but economic cost increases
Solution Approach 1:
The patent optimizes the concentration parameters of L-glufosinate (0.1-10% by weight) and companion herbicides in the mixture to achieve synergistic effects. This allows effective weed control at reduced application rates compared to conventional herbicidal mixtures, thereby reducing the quantity of substance required and lowering economic cost.
Solution Approach 2:
The patent merges multiple herbicides with different modes of action into a single formulation containing L-glufosinate. This combination provides broad-spectrum weed control coverage against grasses and broadleaf weeds, achieving effective control at lower total application rates and reducing the quantity of substance needed.
3Reliability
If L-glufosinate is combined with specific herbicidal compounds, then synergistic herbicidal effects are achieved, but formulation complexity increases
Solution Approach 1:
The patent develops a universal herbicidal formulation where L-glufosinate serves as a core component that works synergistically with multiple types of herbicides (graminicides and broadleaf herbicides). This multi-functional formulation provides broad-spectrum weed control against both grass and broadleaf weeds, achieving high herbicidal efficacy while maintaining relatively simple formulation structure through the use of a common active ingredient platform.
Data Source
AI summary
The present invention relates to herbicidal mixtures and their methods and uses for controlling undesirable vegetation in glufosinate-tolerant corn, wherein the herbicidal mixtures comprise L-glufosinate and and at least one herbicidal compound II selected from clethodim, cycloxydim, haloxyfop, haloxyfop-methyl, haloxyfop-P, haloxyfop-P-methyl, quizalofop, quizalofop-ethyl, quizalofop-tefuryl, quizalofop-P, quizalofop-P-ethyl, quizalofop-P-tefuryl, chlorimuron, chlorimuron-ethyl, foramsulfuron, halosulfuron, halosulfuron-methyl, iodosulfuron, iodosulfuron-methyl-sodium, nicosulfuron, prosulfuron, rimsulfuron, thifensulfuron, thifensulfuron-methyl, tritosulfuron, imazamox, imazamox ammonium, imazapic, imazapic ammonium, imazapyr, imazapyr isopropylammonium, imazethapyr, imazethapyr ammonium, diclosulam, flumetsulam, florasulam, metosulam, thiencarbazone, thiencarbazone-methyl, atrazine, simazine, terbuthylazin, bromoxynil and its salts and esters, bentazone, bentazone-sodium, pyridate, carfentrazone, carfentrazone-ethyl, flumiclorac, flumiclorac-pentyl, flumioxazin, fluthiacet, fluthiacet-methyl, saflufenacil, sulfentrazone, tiafenacil, trifludimoxazin, picolinafen, bicyclopyrone, clomazone, isoxaflutole, mesotrione, sulcotrione, tembotrione, tolpyralate, topramezone, fenquinotrione, glyphosate, glyphosate dimethylammmonium, glyphosate-isopropylammonium, glyphosate-potassium, glyphosate-trimesium (sulfosate), pendimethalin, acetochlor, butachlor, dimethenamid, dimethenamid-P, metazachlor, metolachlor, S-metolachlor, pethoxamid, flufenacet, pyroxasulfone, 2,4-D and its salts and esters, clopyralid and its salts and esters, dicamba and its salts and esters, quinclorac, quinclorac dimethylammonium, quinmerac, diflufenzopyr, diflufenzopyr-sodium, cinmethylin, MCPA and its salts and esters and other compounds.