Halosulfuron Thifensulfuron Synergy for Duck Salad Control
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Solution Overview
Problem
Current herbicides are ineffective against Heteranthera limosa, commonly known as 'duck salad,' a pernicious weed in rice crops, requiring additional herbicides that increase costs and environmental impact while potentially damaging the crop.
Innovation Solution
The combination of halosulfuron and thifensulfuron is applied to rice crops to provide synergistic control of Heteranthera limosa, either preemergence or post-emergence, as a herbicidal treatment, either alone or with other biologically active materials, to effectively eradicate the weed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional classes of herbicides are used to control Heteranthera limosa, then weed control effectiveness is improved, but herbicide cost and environmental impact increase
Solution Approach 1:
The patent combines halosulfuron and thifensulfuron into a single herbicidal composition to achieve effective control of Heteranthera limosa. This merging of two herbicides into one formulation resolves the contradiction by providing the necessary weed control effectiveness while avoiding the need for multiple separate applications, thereby reducing overall environmental impact and cost.
Solution Approach 2:
The invention uses a composite herbicidal material consisting of halosulfuron and thifensulfuron in specific ratios (0.1:9.9 to 5:5 by weight). This composite approach allows the composition to achieve superior weed control against Heteranthera limosa while maintaining lower individual dosages of each herbicide, thus reducing environmental burden and application costs compared to using multiple herbicide classes separately.
2Reliability
If multiple herbicides are applied to control duck salad, then weed eradication capability is improved, but the number of applications and complexity increase
Solution Approach 1:
The patent merges halosulfuron and thifensulfuron into a single combined herbicidal composition that can be applied in one treatment to achieve effective control of Heteranthera limosa. This eliminates the need for multiple separate herbicide applications, thereby reducing operational complexity while maintaining superior weed eradication capability.
3Reliability
If higher herbicide loading is applied per unit area, then weed control effectiveness is improved, but crop damage risk increases
Solution Approach 1:
The patent optimizes the concentration parameters of halosulfuron and thifensulfuron in the combined composition, using specific ratios (0.1:9.9 to 5:5 by weight) and controlled application rates (0.003 to 0.3 lb active ingredient per acre). This parameter optimization achieves effective weed control while minimizing crop damage risk through precise dosage control and synergistic interaction between the two herbicides.
Data Source
AI summary
Provided are improved agricultural processes for the improved cultivation of rice wherein the crops are treated to control undesired vegetative growth using a plant treatment composition comprising both halosulfuron and thifensulfuron to provide improved herbicidal efficacy against Heteranthera limosa, commonly referred to as “duck salad”. Also provided are compositions useful in the improved agricultural processes, as well as herbicidal treatment regimens. Unexpectedly high rates of efficacy against Heteranthera limosa, amongst rice plant in rice crops are disclosed.