Which term best describes the movement of pesticides through plant tissues after application?

Which term best describes the movement of pesticides through plant tissues after application?

• A. Absorption
• B. Drift
• C. Volatilization
• D. Calibration

Answer: (A)

Absorption is the uptake of a pesticide from the surface into the plant tissues. Once the chemical enters the plant, it can be transported through the vascular system to other parts, a process called translocation. The key idea here is that movement inside the plant can occur only after the chemical has entered, and absorption describes that entry step. The other terms describe different phenomena: drift is spray movement in the air to off-target areas, volatilization is the chemical turning into vapor and leaving the plant, and calibration is adjusting application equipment for correct delivery.

Absorption is the uptake of a pesticide from the surface into the plant tissues. Once the chemical enters the plant, it can be transported through the vascular system to other parts, a process called translocation. The key idea here is that movement inside the plant can occur only after the chemical has entered, and absorption describes that entry step. The other terms describe different phenomena: drift is spray movement in the air to off-target areas, volatilization is the chemical turning into vapor and leaving the plant, and calibration is adjusting application equipment for correct delivery.