How to prevent and control blueberry mummy berry? Detailed explanation of the latest control methods
Blueberries have extremely high nutritional value and are very popular among consumers on the market, but mummy berry is one of the most serious diseases commonly occurring during cultivation, and it can severely affect blueberry yield and cause relatively large economic losses to farmers. So what causes blueberry mummy berry? How should it be prevented and controlled? Let's take a look at the detailed introduction below.
1. Symptoms of mummy berry
Mummy berry is a disease caused by fungi. In the early stage of the disease, mature spores of the pathogen germinate on the surface of new leaves or flowers, and the hyphae develop in the cells on the surface of the flowers and leaves, causing the cells to rupture and die, which leads to sudden wilting and browning of leaves, buds, flowers, and other parts. After about a period of time, the fungal spores produce a powdery substance that covers the leaves, stems, and styles, and at the same time spreads to flowers that have already opened for secondary transmission, ultimately causing the fruit to wilt, lose water, dry out, and become mummified.
2. Disease occurrence pattern
After overwintering, if the mummified fruit that has fallen to the ground is not cleaned up in time, its spores will germinate again and cause recurrent infection in the second year. The occurrence of mummy berry disease is related to climate and variety. It is severe in areas with abundant rain in early spring and high temperatures, and is relatively severe in areas with long periods of low winter temperatures. The degree of occurrence varies among different varieties. Some varieties have weak disease resistance and are highly susceptible to infection when the disease occurs, while some varieties have strong disease resistance and are not easily infected.
3. Control methods
First, choose varieties with strong disease resistance for planting to reduce the chance of infection. Before overwintering, do a good job of cleaning the orchard, and burn or deeply bury fallen leaves and fruit in the orchard in a centralized manner to reduce pathogens and lower the possibility of disease occurrence. Shallow plowing and applying fertilizer before flowering in spring can reduce the occurrence of the disease. When the disease occurs, promptly remove diseased leaves or flowers to prevent the disease from continuing to spread, and at the same time, sprays can also be applied for prevention. Spraying urea solution in early spring will reduce the incidence of the disease, and spraying triazine fungicide before flowering can protect plants from infection, with an effectiveness rate of more than 90%.
The above is an introduction to the control methods for blueberry mummy berry. We hope it can help you. If you want to learn more related knowledge, please keep following us.