Which term describes pesticides that are absorbed into the immediate area of application but do not move far from the uptake site?

Which term describes pesticides that are absorbed into the immediate area of application but do not move far from the uptake site?

• A. Local penetrate
• B. Systemic pesticide
• C. Contact pesticide
• D. Residual pesticide

Answer: (A)

Movement after uptake determines how far protection can extend from where the pesticide was applied. Local penetrants are absorbed at the uptake site but have limited mobility, so they stay close to that site and don’t travel far through the plant or into other tissues. This is why they fit the description of being absorbed into the immediate area of application while not moving far. Systemic pesticides, by contrast, move through the plant’s vascular system to distant tissues; contact pesticides mainly act on pests at the surface with little absorption; residual pesticides describe how long the chemical remains in the environment or on surfaces, not its movement within the plant.

Movement after uptake determines how far protection can extend from where the pesticide was applied. Local penetrants are absorbed at the uptake site but have limited mobility, so they stay close to that site and don’t travel far through the plant or into other tissues. This is why they fit the description of being absorbed into the immediate area of application while not moving far. Systemic pesticides, by contrast, move through the plant’s vascular system to distant tissues; contact pesticides mainly act on pests at the surface with little absorption; residual pesticides describe how long the chemical remains in the environment or on surfaces, not its movement within the plant.