The latest common diseases and insect pests of water chestnut and their control

Water chestnut is a genus of rhomboides, also known as waist turtle, is a kind of annual fruit, the fruit of water chestnut is crisp and delicious, can be used to cook porridge. Water chestnut contains a variety of nutrients rich in protein and trace elements, which has the effect of relieving thirst and detoxification. It is a hot planting project now. There are also many people planting in a large area, but in the planting process will find that water chestnut often occur a lot of diseases and insect pests, and do not know how to control. So the editor brings you the common diseases and insect pests of water chestnut and the methods of prevention and control.

1. White silk disease of water chestnut

Disease characteristics: water chestnut white silk disease is a fungal disease, the main pathogen is Sclerotinia sclerotiorum, generally high incidence in hot and humid environment in summer and autumn. Water pollution is more prone to disease, mainly for good water chestnut leaves, at first there will be a small number of yellow disease spots in the middle of the leaves, and then gradually expand and extend, causing the whole leaves to turn yellow and rot, and begin to spread to the surrounding leaves. Cause the decay of the whole diamond plate, when the disease is serious, it will cause a large area of diamond plate rot within 3 days, resulting in extinction.

Prevention and control methods: when planting water chestnut, we should pay attention to the planting density to prevent the growth space of water chestnut from being too small in summer and autumn. Keep the water quality clean and hygienic to prevent pollution. The diseased rhombus or rhombus leaves should be removed in time, concentrated treatment and destruction, and the rest of the rhombus in the field should be sprayed with methyl topiramate and other chemicals.

2. Brown spot of water chestnut

Disease characteristics: Brown spot is also a fungal disease, which occurs in all parts of our country, and it also occurs in summer and autumn, which will cause early defoliation of rhombus leaves, resulting in reduced yield and quality. In the early stage of the disease, some light brown spots will appear on the edge of the leaves, and then will gradually expand into irregular dark brown spots. When the environment is relatively humid, there will be black mildew spots.

Prevention and control methods: when planting water chestnut, we should pay attention to the planting density to prevent the growth space of water chestnut from being too small in summer and autumn. Keep the water quality clean and hygienic to prevent pollution. The main prevention and control methods are almost the same as those of white silk disease, mainly paying attention to the water quality in the field, sanitary conditions, etc., and comprehensively disinfecting the field after winter to reduce the pathogen.

3. Golden flower worm of water chestnut

Characteristics of the disease: Golden flower insects in water chestnuts can cause devastating disasters in water chestnuts, which generally occur in early summer, and the reproduction speed of golden flower insects is very fast. It can take two days for a generation at the earliest, and it is a high incidence period during the summer and autumn transition season. The adults and larvae of the golden flower worm will eat the mesophyll of the water chestnut, and the whole diamond plate can be eaten in a few hours.

Prevention and control methods: the method of prevention and control of golden flower insects can only be properly controlled by spraying pesticides. Generally speaking, insecticide sheets or insecticides such as insecticides can be used for spraying and killing.

The above three kinds are a brief introduction to the diseases and insect pests that often occur when planting water chestnut. When planting, we must pay attention to the living environment of water chestnut, because water chestnut lives in water, so we must pay attention to the quality of water. Do not use polluted water to plant water chestnuts, and we should pay special attention to the pest of golden flowers and insects. If this pest is not controlled in time, it can even make you give up production. This article is for reference only. I hope it will be helpful to all of you.