Which chemical is used as a safener for sorghum seed?

• A. Thiamethoxam
• B. Fluxofenim
• C. Lindane
• D. Permethrin

Answer: (B)

Fluxofenim is used as a safener for sorghum seed due to its ability to protect the seeds from the potential phytotoxic effects of herbicides while still allowing for effective weed control. Safeners enhance the tolerance of crops to herbicides, ensuring that the crop can thrive while limiting damage from the chemical application. In the case of sorghum, fluxofenim works by promoting the plant's ability to metabolize and detoxify certain herbicides, thereby reducing injury to the crop and optimizing yield potential.

The other chemicals listed have different uses. Thiamethoxam is an insecticide used primarily for pest control. Lindane is an insecticide that has been restricted or banned in many countries due to health and environmental concerns. Permethrin is mainly used as a pesticide for controlling insects but does not have safener properties for sorghum seed. Therefore, fluxofenim stands out as the appropriate choice for its specific role in promoting sorghum seed safety during herbicide application.