Discover the essential practices and challenges in protecting papaya plants from pests and diseases with this horticultural quiz designed for learners and growers alike.
Which method is most effective in managing the spread of Papaya Mosaic Virus in papaya plantations?
Explanation: Removing and destroying infected plants helps break the virus cycle and prevents spread by vectors. Spraying copper fungicides is ineffective since viruses are not controlled by fungicides. Applying nitrogen-rich fertilizers or planting closer together does not address viral transmission and may worsen conditions for disease spread.
A farmer notices white, cottony clusters on papaya stems and fruits along with plant weakening. What is the most probable pest?
Explanation: The papaya mealybug creates white, waxy masses and weakens plants through sap feeding. Red spider mites are tiny and cause leaf stippling, not cottony masses. Fruit fly larvae infest fruits but do not leave white clusters. Aphid nymphs are also small but lack cottony secretions.
In humid conditions, which preventive measure helps reduce the risk of anthracnose disease on ripening papaya fruits?
Explanation: Harvesting before full ripeness reduces the time anthracnose fungi can infect developing fruit. Watering in the evening increases leaf wetness, favoring fungi. High nitrogen promotes lush growth prone to disease. Deep shade reduces airflow and can increase fungal problems.
What is a recommended strategy for preventing Papaya Ring Spot Virus infection in a new plantation?
Explanation: Using virus-free planting material minimizes initial infection risk. Systemic insecticides may help manage vectors but can't guarantee viral prevention alone. Saltwater irrigation harms plants and is not a preventive measure. Aggressive pruning does not prevent viral diseases and can injure plants.
A grower notices root knot galls and stunted growth in papaya plants. Which action should be prioritized for nematode management?
Explanation: Crop rotation with non-host species helps break the nematode lifecycle and reduces infestations. Overhead irrigation does not control nematodes and may cause other issues. Adding manure alone does not address nematodes directly. Reduced sunlight weakens plants but has no impact on nematode populations.