Which practice is part of greenhouse sanitation?

Which practice is part of greenhouse sanitation?

• A. Removing fallen plant debris daily
• B. Applying pesticides weekly
• C. Overhead watering every afternoon
• D. Ventilating at night

Answer: (A)

In greenhouse sanitation, keeping the space clean by removing fallen plant debris directly reduces disease inoculum and places for pests to hide. Debris can harbor pathogens and pests that survive between crops; as it decomposes or dries out, it becomes a reservoir from which problems can spread to healthy plants. Cleaning up daily prevents these sources from taking hold and helps maintain a healthier growing environment for new crops. This approach is the best fit because sanitation focuses on eliminating sources of trouble before they affect the plants. Other practices, like applying pesticides on a fixed schedule, address problems after they appear and rely on chemicals rather than removing the underlying sources. Overhead watering every afternoon increases leaf wetness and humidity, which can promote disease rather than prevent it. Ventilating at night helps with air quality and temperature control, but it doesn’t remove potential disease sources from the space.

In greenhouse sanitation, keeping the space clean by removing fallen plant debris directly reduces disease inoculum and places for pests to hide. Debris can harbor pathogens and pests that survive between crops; as it decomposes or dries out, it becomes a reservoir from which problems can spread to healthy plants. Cleaning up daily prevents these sources from taking hold and helps maintain a healthier growing environment for new crops.

This approach is the best fit because sanitation focuses on eliminating sources of trouble before they affect the plants. Other practices, like applying pesticides on a fixed schedule, address problems after they appear and rely on chemicals rather than removing the underlying sources. Overhead watering every afternoon increases leaf wetness and humidity, which can promote disease rather than prevent it. Ventilating at night helps with air quality and temperature control, but it doesn’t remove potential disease sources from the space.