Dieback is a common problem faced by lemon growers, and can result in significant damage to the citrus crop. It is a fungal disease caused by the fungus, Phomopsis citri. The infection of this disease can produce symptoms like leaf spots, stem canker, and dieback. The disease attacks the limbs of the tree, and if left unchecked, can cause the tree to die. Therefore, it is essential to control the disease to protect the citrus crop.
There are several methods to control die back in lemons, including:
1. Cultural control – Proper cultural management practices can help reduce the impact of the disease on the crop. Practices such as pruning of dead and infected wood, sanitation practices, and crop rotation can help prevent the spread of the disease.
2. Chemical control – Several fungicides can control dieback in lemons, including Copper sulphate and Azoxystrobin. These chemicals must be used in the right quantities and at the right time to be effective.
3. Biological control – Some biological agents can help control the spread of the pathogen. For example, the use of Bacillus subtilis, a beneficial bacteria, can help control different fungal diseases by releasing antibiotics produced during metabolism.
4. Physiological control – It involves managing the environment to make it less conducive to the pathogen’s growth. For example, reducing humidity levels and maintaining good air circulation around the citrus trees can help prevent the spread of the disease.
In conclusion, it is essential to control dieback in lemons to safeguard the crop from significant damage. Implementing proper cultural practices, using the right fungicides, harnessing the benefits of biological agents, and managing the environment are some of the measures that can be taken to control the disease. By controlling dieback, lemon growers can enjoy healthy, productive citrus trees and a bountiful yield.