This archive report was first published on 17 August 2019.
Kenya's potato industry is a significant contributor to the country's food security, with the crop ranking second only to maize in terms of importance.
As demand for potatoes continues to rise, driven in part by the growing popularity of potato chips and crisps, farmers must be aware of the challenges they face, including the devastating effects of bacterial wilt.
Published on August 17, 2019, this article provides valuable insights into the causes and symptoms of bacterial wilt, as well as practical advice on how to prevent and manage the disease.
According to experts, potatoes are most commonly grown in high-altitude areas with high rainfall, but they can also thrive under irrigation, particularly with the use of drip irrigation systems in dry areas.
However, to maximize yields and prevent disease, farmers must adopt good agricultural practices, including the use of certified seeds, proper soil preparation, and crop rotation.
One of the key challenges facing potato farmers is the spread of bacterial wilt, a disease caused by the bacterium Ralstonia solanacearum. The disease can enter the plant through weak points or wounds, and can also be spread through infected mother tubers.
To confirm the presence of bacterial wilt, farmers can perform a simple test by cutting a tuber or stem and suspending it in a glass of water. If a whitish substance oozes out, it indicates the presence of the disease.
Once infected, the disease can spread rapidly, causing the tubers to become gummy or sticky, with a white fluid exuding from the eyes. The disease can also cause brown rot in the vascular ring, making the crop unfit for human consumption.
While there is no effective chemical treatment for bacterial wilt, farmers can take preventative measures by rotating crops, practicing farm hygiene, and disinfecting farm tools.
By understanding the causes and symptoms of bacterial wilt, and taking proactive steps to prevent and manage the disease, farmers can help to ensure a healthy and productive potato crop.
