The Latest Control Methods for Cucumber Green Mottle Mosaic Disease
Many farmer friends will find during the process of growing cucumbers that green spots often appear on the leaves and flowers of cucumbers, which greatly affects the growth and development of cucumbers. In fact, this is called green mottle mosaic disease, and the main sources of this disease are seeds and soil. The causes of its onset are varied, so it is also relatively difficult to control. Now the editor below will explain the main symptoms and solutions of green mottle mosaic disease to everyone.
1. Symptoms of onset
This green mottle mosaic disease does not only mean that the spots are green; its spots come in two colors, one green and one yellow. At the initial stage of onset, it infects seedlings at the seedling stage. Green spots appear on several leaves at the top of the seedlings. The relatively smooth and flat leaf surface produces bright green raised areas. New leaves are darker in color. In the end, the entire leaf veins become transparent, and the new leaves cannot grow larger and become smaller and smaller. This leads to a decline in cucumber photosynthesis and insufficient plant nutrition, resulting in stunted plants and wrinkled leaf surfaces. Green patches also appear on the fruit, and in more severe cases, tumor-like growths appear on the melon, causing the fruit to finally grow into deformed fruit, making the fruit lose its commercial value and seriously affecting the economic interests of farmers. The symptoms of yellow patches are similar to those of green, only the color is different.
2. Transmission routes
The main transmission routes of leaf and flower green mottle disease are through soil and seeds, and the conditions for transmission are relatively broad. The pathogen on the seeds can spread to the leaves, causing symptoms on young leaves after about three weeks. In addition, the pathogen of this disease is extremely easy to transmit through hands, clothing and other artificial media. When carrying out agricultural operations in the garden, even a little carelessness can cause large-scale spread of the pathogen and infect other plants.
3. Conditions for onset
Cucumber is a crop that likes water and light. The period when this disease occurs is mostly in summer. A high-temperature environment will accelerate the development of the pathogen and increase its infectivity. Storms and heavy rain can cause plants to collide with each other, and branches to rub against each other and create wounds, or when cultivating and fertilizing, carelessness in hoeing the roots and burning them may occur, and the pathogen will take advantage of the wounds to invade and infect.
4. Control methods
When selecting seeds, choose disease-free and disease-resistant improved varieties, such as Chunqiu Lu, Zhongnong No. 8 and other products. Establish disease-free seed fields in the garden, frequently apply small amounts of disease-free organic fertilizer, enhance the resistance of seedlings, and speed up growth. When carrying out agricultural operations in the garden, avoid injuring the roots. If diseased plants are found, they should be removed in time. Pay attention to disinfection when sowing, so as to avoid already carrying disease at the very beginning. Seed disinfection can use high-temperature water or chemicals such as trisodium phosphate. Water appropriately to prevent the soil from becoming too dry.
The above is a brief introduction to cucumber green mottle mosaic disease. The conditions for the onset of green mottle mosaic disease are very easy, and there are also many transmission routes. Therefore, in daily management and intertillage and soil cultivation, try to avoid injuring the roots. Reducing the occurrence of wounds also reduces the incidence rate. If you want to learn more related information, please continue to follow Qinnong Net.