Final answer:
The incorrect amount of pesticide can be applied to the target area by improper mixing or using an incorrect amount of pesticide in the spray tank.
Step-by-step explanation:
The correct answer is d. Both a and b.
Even if you have correctly calibrated your sprayer, the incorrect amount of pesticide can be applied to the target area by:
- Improper mixing of the pesticide with the carrier in the spray tank
- Using an incorrect amount of pesticide in the spray tank
Both of these factors can lead to the application of an incorrect amount of pesticide, which can have negative consequences on the target area.