Sesame planting: how to prevent and cure bacterial wilt in white sesame?

How to prevent and cure bacterial wilt in white sesame? Why does bacterial wilt occur in white sesame? Please introduce that bacterial wilt of white sesame is very common in the process of planting, mainly caused by excessive soil moisture in the field. The pathogen overwinters with the remains of the diseased plant in the soil and spreads through running water or farming operations. The condition of continuous cropping field is more serious. The peak of the disease is usually in the hot July-August. After the rainstorm, the temperature rises suddenly, and the disease is easy to occur and epidemic. Symptoms of Ralstonia solanacearum of white sesame: the outer part of the rhizome of the injured plant showed dark brown stripes, the internal vascular bundles were brown, bacteria overflowed and exuded, and turned into bright black particles after drying. At the initial stage of the disease, the diseased plant seemed to be lack of water, wilted during the day and returned to normal at night. A few days later, the leaves wilted sharply from the top down, the old leaves hung, and then the whole plant died. After the onset of the disease, the veins of the leaves show dark green spots, sometimes crisscross, forming a network, facing the light perspective, and its center is in the shape of oil collapse. After the capsule was damaged, it showed waterlogged disease spot, and gradually turned into dark brown stripes of different thickness, which made the diseased capsule thin and shrunken, thus making the seed thin and lost its ability to germinate. White sesame can refer to the following methods to control bacterial wilt: agricultural control 1. Disease-resistant varieties were selected and rotation was conducted with non-Solanaceae and non-legume crops for three years. two。 White sesame is not resistant to water stains. During its growth and development, if it encounters heavy rain, heavy rain and stagnant water in the field, it should be eliminated in time so that there is no stagnant water in the field. 3. Increase the application of organic fertilizer, especially potash fertilizer. 4. Timely removal, destruction or deep burial of diseased plants. Chemical control 1. Disinfect the acupoints with 1 part of lime water and 15 parts of lime powder. two。 Before sowing, soil treatment with chlorothalonil has a better preventive effect, or in the early stage of the disease, spraying with 1000 times of 50% carbendazim wettable powder or 50% cresol with 50% carbendazim per mu plus 50% carbendazim 100g, 50 kg of water. Click to get more sesame planting techniques click to get more food crop planting techniques