Guava Health Guard Quiz Quiz

Explore key strategies and best practices for effective guava disease control. This quiz covers symptoms, prevention, and management aimed at sustaining healthy guava crops.

1. Identifying Anthracnose in Guava

   Which symptom is most commonly associated with anthracnose disease in guava fruits?

   1. Yellow mottling near leaf edges
   2. Sunken dark spots with pinkish spore masses
   3. Distorted flowers without fruit set
   4. Powdery white coating on stems

   Explanation: Anthracnose typically produces sunken, dark lesions often covered with pinkish spore masses on guava fruits. Yellow mottling is more characteristic of viral infections. Powdery white coating suggests powdery mildew, while distorted flowers are symptoms of some other physiological disorders or pest attacks.

2. Prevention of Guava Wilt

   Which practice best helps in preventing wilt disease in young guava plantations?

   1. Regular leaf plucking
   2. Using overhead irrigation in the evening
   3. Applying extra nitrogen fertilizers
   4. Avoiding waterlogging and ensuring good drainage

   Explanation: Proper drainage and avoiding waterlogged conditions help prevent wilt disease caused by soilborne pathogens. Leaf plucking does little to prevent wilt, excess nitrogen may stress plants, and overhead evening irrigation increases humidity and disease risk.

3. Integrated Pest Management for Fruit Rot

   In an integrated pest management (IPM) strategy for guava fruit rot, which action is the most sustainable?

   1. Timely removal and destruction of infected fruits
   2. Planting guava in the same spot every season
   3. Continuous application of fungicides
   4. Spraying broad-spectrum insecticides weekly

   Explanation: Removing and destroying infected fruits helps reduce inoculum and limits disease spread. Constant fungicide application can cause resistance, broad-spectrum insecticides target insects not fruit rot, and monoculture increases disease persistence in soil.

4. Common Cause of Guava Leaf Spot

   What is the most common causal agent for leaf spot diseases in guava plants?

   1. Root nematodes
   2. Viral infection
   3. Magnesium deficiency
   4. Fungal pathogens like Cercospora spp.

   Explanation: Leaf spots on guava are most often caused by fungi such as Cercospora. Magnesium deficiency leads to chlorosis, nematodes damage roots not leaves, and viral infections show mosaic or mottling rather than typical leaf spots.

5. Sanitation in Guava Orchards

   Why is field sanitation important for controlling guava diseases such as fruit rot and wilt?

   1. It speeds up harvesting
   2. It increases fruit sugar content
   3. It reduces the spread of disease-causing organisms in the orchard
   4. It prevents pest attacks only

   Explanation: Sanitation such as removing fallen fruits and debris limits the presence and spread of pathogens. Increasing sugar content is unrelated to sanitation; while pest prevention is partly aided, sanitation targets pathogens. Harvesting speed is not affected by sanitation measures.