Anthracnose Disease Of Guava: Causal Organism, Symptoms, And Treatment

anthracnose of guava disease

In this article, we are going to be looking at the anthracnose disease of guava.

Short answer: anthracnose disease of guava is a disease of guava that is caused by a fungus commonly know as Anthracnose. This disease causes dieback and premature falling of guava leaves and fruits.

Read on to find out more detailed information on the management, control, and symptoms.


Guava like any other plant is also not an exception to the attack of disease-causing organisms such as fungi, bacteria, viruses, and algae.

You can learn more about the diseases of guava and their control here.

One of such many diseases that can affect guava trees is called anthracnose disease.

What is Anthracnose?

Anthracnose is a general word used to describe different varieties of diseases that cause damaging effects on vegetables, fruits, and trees.

It is a fungus disease that attacks developing shoots and expanding leaves. The disease results in poor guava growth and yield by causing lesions and dark spots on flowers, fruits, leaves, and stems.

The disease can easily spread and destroy the whole guava plantation. It usually lives on infected leaves, flowers, stems, fruits, or debris.

Causal Organism Of Guava Anthracnose

Anthracnose of Guava Symptoms

anthracnose diseases of guava treatment

On leaves, guava anthracnose usually appears as mild, irregular yellow or Brown spots. As the disease becomes worsen and expand, the spots become darker and cover the leaves.

On fruits of guava, the disease usually produces small dark, sunken spots, which eventually spread.

If the soil is moist, noticeable pinkish spore masses can be seen in the Center of these dark spots, which later make the fruits rot.

On the stem of guava, it can attack the young shoots and cause premature defoliation of leaves. The disease also develops brownish spots and patches on the stem.

On flowers of guava trees, this disease can cause serious damage and poor guava productivity. It causes premature falling and poor development of flowers.

Management of Anthracnose Disease of Guava

  • Remove and burn any infected plants in your guava plantation
  • Avoid too much water around your guava trees
  • Spray copper-based fungicides such as mancozeb 75% wp @2.5gm/liter of water and oxychloride 50% wp @4mg/liter

Preventions of Guava Anthracnose Disease

  • Always plant resistant guava varieties or you purchase a healthy guava transplant
  • Always grow your plants on a rich loamy-sandy and well-drained soil
  • Timely fertilize your guava with both organic and inorganic manure
  • Plant your guava trees in a well-ventulated areas with moderate moisture
  • Irrigate your guava trees using a dip sprinkler instead of overhead sprinkler
  • Don’t touch your guava plants when they are wet
  • Timely prune your guava trees to allow proper passage of air
  • Do not allow ripening of guava fruits to be touching the grounds

Biological Control of Anthracnose Disease Of Guava

Anthracnose of guava can be biologically controlled by the introduction of Strep to sprang I um pseudovulgare on fruits before the emergence of symptoms.


  • Plant resistant guava varieties
  • Always before planting guava, look for an area that has moderate climatic conditions
  • Prune your guava timely
  • Avoid damping of guava trees especially when they are fully matured
  • Always destroyed infected plants
  • Avoid guava tree branches and fruits from touching the grounds
  • Timely spray your guava with 2-8-8-8 alongside the copper supplement

Learn more on guava fertilizer


We have looked at the anthracnose of guava tree disease where you discussed the causal organism, symptoms, management, and preventions.

We hope that this guide to Anthracnose disease of psidium guajava was helpful. We love to hear from you. So, do write to us in the comments section below.